From 6546ad112588f8157de9b12a0540071d0f712fd6 Mon Sep 17 00:00:00 2001
From: Sylvester Aswin <sylvesteraswin@users.noreply.github.com>
Date: Thu, 15 Feb 2018 21:32:53 +0100
Subject: [PATCH] Refactor test cases for minify simplily. (#799)

---
 .../fixtures/arrow-block-empty/actual.js      |    2 +
 .../fixtures/arrow-block-empty/expected.js    |    2 +
 .../__tests__/fixtures/arrow-block/actual.js  |    2 +
 .../fixtures/arrow-block/expected.js          |    2 +
 .../fixtures/arrow-short-hand/actual.js       |    1 +
 .../fixtures/arrow-short-hand/expected.js     |    1 +
 .../bail-multiple-statements/actual.js        |   10 +
 .../bail-multiple-statements/expected.js      |    8 +
 .../fixtures/block-to-sequence/actual.js      |    4 +
 .../fixtures/block-to-sequence/expected.js    |    1 +
 .../fixtures/combine-returns/actual.js        |   12 +
 .../fixtures/combine-returns/expected.js      |    3 +
 .../actual.js                                 |   16 +
 .../expected.js                               |   48 +
 .../common-conditional-operations/actual.js   |    1 +
 .../common-conditional-operations/expected.js |    3 +
 .../convert-gaurded-nots-to-ors-2/actual.js   |    4 +
 .../convert-gaurded-nots-to-ors-2/expected.js |    1 +
 .../convert-gaurded-nots-to-ors/actual.js     |    2 +
 .../convert-gaurded-nots-to-ors/expected.js   |    1 +
 .../__tests__/fixtures/do-while/actual.js     |    3 +
 .../__tests__/fixtures/do-while/expected.js   |    1 +
 .../fixtures/early-return-2/actual.js         |    6 +
 .../fixtures/early-return-2/expected.js       |    4 +
 .../fixtures/early-returns/actual.js          |   19 +
 .../fixtures/early-returns/expected.js        |   15 +
 .../actual.js                                 |    6 +
 .../expected.js                               |    8 +
 .../__tests__/fixtures/empty-return/actual.js |    4 +
 .../fixtures/empty-return/expected.js         |    3 +
 .../fixtures/empty-vars-first/actual.js       |    1 +
 .../fixtures/empty-vars-first/expected.js     |    5 +
 .../flip-binary-expressions/actual.js         |    1 +
 .../flip-binary-expressions/expected.js       |    1 +
 .../fixtures/flip-conditionals/actual.js      |    1 +
 .../fixtures/flip-conditionals/expected.js    |    1 +
 .../fixtures/flip-logical-expr-2/actual.js    |    1 +
 .../fixtures/flip-logical-expr-2/expected.js  |    1 +
 .../fixtures/flip-logical-expr/actual.js      |    2 +
 .../fixtures/flip-logical-expr/expected.js    |    2 +
 .../__tests__/fixtures/for-sequence/actual.js |    5 +
 .../fixtures/for-sequence/expected.js         |    3 +
 .../fixtures/handle-to-boolean-2/actual.js    |    4 +
 .../fixtures/handle-to-boolean-2/expected.js  |    3 +
 .../fixtures/handle-to-boolean/actual.js      |    3 +
 .../fixtures/handle-to-boolean/expected.js    |    3 +
 .../fixtures/handle-void-returns-2/actual.js  |    9 +
 .../handle-void-returns-2/expected.js         |    3 +
 .../fixtures/handle-void-returns/actual.js    |    7 +
 .../fixtures/handle-void-returns/expected.js  |    3 +
 .../fixtures/hoist-functions/actual.js        |    5 +
 .../fixtures/hoist-functions/expected.js      |    4 +
 .../__tests__/fixtures/if-break-2/actual.js   |    4 +
 .../__tests__/fixtures/if-break-2/expected.js |    1 +
 .../__tests__/fixtures/if-break-3/actual.js   |    8 +
 .../__tests__/fixtures/if-break-3/expected.js |    1 +
 .../__tests__/fixtures/if-break-4/actual.js   |    8 +
 .../__tests__/fixtures/if-break-4/expected.js |    1 +
 .../__tests__/fixtures/if-break-5/actual.js   |   10 +
 .../__tests__/fixtures/if-break-5/expected.js |    4 +
 .../__tests__/fixtures/if-break/actual.js     |    3 +
 .../__tests__/fixtures/if-break/expected.js   |    1 +
 .../__tests__/fixtures/if-complex/actual.js   |   17 +
 .../__tests__/fixtures/if-complex/expected.js |    7 +
 .../if-conditional-return-2/actual.js         |   12 +
 .../if-conditional-return-2/expected.js       |    3 +
 .../if-conditional-return-3/actual.js         |    6 +
 .../if-conditional-return-3/expected.js       |    3 +
 .../if-conditional-return-4/actual.js         |    7 +
 .../if-conditional-return-4/expected.js       |    7 +
 .../fixtures/if-conditional-return/actual.js  |   12 +
 .../if-conditional-return/expected.js         |    3 +
 .../fixtures/if-continue-2/actual.js          |    5 +
 .../fixtures/if-continue-2/expected.js        |    1 +
 .../fixtures/if-continue-3/actual.js          |   10 +
 .../fixtures/if-continue-3/expected.js        |    3 +
 .../__tests__/fixtures/if-continue/actual.js  |    4 +
 .../fixtures/if-continue/expected.js          |    1 +
 .../fixtures/if-else-blocks/actual.js         |    7 +
 .../fixtures/if-else-blocks/expected.js       |    7 +
 .../fixtures/if-empty-blocks/actual.js        |   13 +
 .../fixtures/if-empty-blocks/expected.js      |    1 +
 .../__tests__/fixtures/if-return-2/actual.js  |   11 +
 .../fixtures/if-return-2/expected.js          |    7 +
 .../__tests__/fixtures/if-return-3/actual.js  |    7 +
 .../fixtures/if-return-3/expected.js          |    6 +
 .../__tests__/fixtures/if-return-4/actual.js  |    7 +
 .../fixtures/if-return-4/expected.js          |    6 +
 .../__tests__/fixtures/if-return-5/actual.js  |    9 +
 .../fixtures/if-return-5/expected.js          |    9 +
 .../__tests__/fixtures/if-return-6/actual.js  |    8 +
 .../fixtures/if-return-6/expected.js          |    5 +
 .../fixtures/if-return-hoisted-fn/actual.js   |    9 +
 .../fixtures/if-return-hoisted-fn/expected.js |    9 +
 .../__tests__/fixtures/if-return/actual.js    |    6 +
 .../__tests__/fixtures/if-return/expected.js  |    3 +
 .../fixtures/if-sequence-test/actual.js       |    6 +
 .../fixtures/if-sequence-test/expected.js     |    3 +
 .../__tests__/fixtures/if-to-gaurds/actual.js |    3 +
 .../fixtures/if-to-gaurds/expected.js         |    3 +
 .../fixtures/if-to-ternary-10/actual.js       |    8 +
 .../fixtures/if-to-ternary-10/expected.js     |    2 +
 .../fixtures/if-to-ternary-11/actual.js       |    8 +
 .../fixtures/if-to-ternary-11/expected.js     |    2 +
 .../fixtures/if-to-ternary-12/actual.js       |    7 +
 .../fixtures/if-to-ternary-12/expected.js     |    1 +
 .../fixtures/if-to-ternary-2/actual.js        |    8 +
 .../fixtures/if-to-ternary-2/expected.js      |    3 +
 .../fixtures/if-to-ternary-3/actual.js        |    9 +
 .../fixtures/if-to-ternary-3/expected.js      |    3 +
 .../fixtures/if-to-ternary-4/actual.js        |    8 +
 .../fixtures/if-to-ternary-4/expected.js      |    3 +
 .../fixtures/if-to-ternary-5/actual.js        |    7 +
 .../fixtures/if-to-ternary-5/expected.js      |    3 +
 .../fixtures/if-to-ternary-6/actual.js        |    7 +
 .../fixtures/if-to-ternary-6/expected.js      |    3 +
 .../fixtures/if-to-ternary-7/actual.js        |    7 +
 .../fixtures/if-to-ternary-7/expected.js      |    3 +
 .../fixtures/if-to-ternary-8/actual.js        |   22 +
 .../fixtures/if-to-ternary-8/expected.js      |    4 +
 .../fixtures/if-to-ternary-9/actual.js        |    8 +
 .../fixtures/if-to-ternary-9/expected.js      |    2 +
 .../actual.js                                 |    7 +
 .../expected.js                               |    1 +
 .../actual.js                                 |    5 +
 .../expected.js                               |    1 +
 .../actual.js                                 |    7 +
 .../expected.js                               |    1 +
 .../fixtures/if-to-ternary-return-2/actual.js |   12 +
 .../if-to-ternary-return-2/expected.js        |    3 +
 .../fixtures/if-to-ternary/actual.js          |    4 +
 .../fixtures/if-to-ternary/expected.js        |    3 +
 .../fixtures/iife-to-unary/actual.js          |    6 +
 .../fixtures/iife-to-unary/expected.js        |    5 +
 .../__tests__/fixtures/iife-to-unary/skip     |    0
 .../__tests__/fixtures/issue-115/actual.js    |    4 +
 .../__tests__/fixtures/issue-115/expected.js  |    3 +
 .../__tests__/fixtures/issue-198/actual.js    |    8 +
 .../__tests__/fixtures/issue-198/expected.js  |    8 +
 .../__tests__/fixtures/issue-208/actual.js    |    5 +
 .../__tests__/fixtures/issue-208/expected.js  |    4 +
 .../__tests__/fixtures/issue-281/actual.js    |    6 +
 .../__tests__/fixtures/issue-281/expected.js  |    4 +
 .../__tests__/fixtures/issue-423/actual.js    |   11 +
 .../__tests__/fixtures/issue-423/expected.js  |    3 +
 .../__tests__/fixtures/issue-455/actual.js    |    7 +
 .../__tests__/fixtures/issue-455/expected.js  |    9 +
 .../__tests__/fixtures/issue-560/actual.js    |    6 +
 .../__tests__/fixtures/issue-560/expected.js  |    6 +
 .../__tests__/fixtures/issue-637/actual.js    |    9 +
 .../__tests__/fixtures/issue-637/expected.js  |    7 +
 .../__tests__/fixtures/issue-689/actual.js    |    7 +
 .../__tests__/fixtures/issue-689/expected.js  |    3 +
 .../fixtures/keep-directives/actual.js        |    4 +
 .../fixtures/keep-directives/expected.js      |    5 +
 .../__tests__/fixtures/merge-if-2/actual.js   |    8 +
 .../__tests__/fixtures/merge-if-2/expected.js |    7 +
 .../__tests__/fixtures/merge-if-3/actual.js   |    5 +
 .../__tests__/fixtures/merge-if-3/expected.js |    3 +
 .../__tests__/fixtures/merge-if-4/actual.js   |    7 +
 .../__tests__/fixtures/merge-if-4/expected.js |    3 +
 .../__tests__/fixtures/merge-if-5/actual.js   |   13 +
 .../__tests__/fixtures/merge-if-5/expected.js |    3 +
 .../__tests__/fixtures/merge-if/actual.js     |    5 +
 .../__tests__/fixtures/merge-if/expected.js   |    1 +
 .../__tests__/fixtures/merge-return/actual.js |    5 +
 .../fixtures/merge-return/expected.js         |    3 +
 .../fixtures/merge-to-for-init-2/actual.js    |    5 +
 .../fixtures/merge-to-for-init-2/expected.js  |    3 +
 .../fixtures/merge-to-for-init/actual.js      |    5 +
 .../fixtures/merge-to-for-init/expected.js    |    3 +
 .../fixtures/remove-block-2/actual.js         |    5 +
 .../fixtures/remove-block-2/expected.js       |    3 +
 .../__tests__/fixtures/remove-block/actual.js |   11 +
 .../fixtures/remove-block/expected.js         |    3 +
 .../fixtures/remove-fn-expr-parens/actual.js  |    1 +
 .../remove-fn-expr-parens/expected.js         |    1 +
 .../fixtures/remove-for-block/actual.js       |    3 +
 .../fixtures/remove-for-block/expected.js     |    1 +
 .../fixtures/return-inside-loop/actual.js     |   10 +
 .../fixtures/return-inside-loop/expected.js   |    6 +
 .../fixtures/super-assignments/actual.js      |    5 +
 .../fixtures/super-assignments/expected.js    |    5 +
 .../switch-expr-last-break-2/actual.js        |   10 +
 .../switch-expr-last-break-2/expected.js      |    9 +
 .../fixtures/switch-expr-last-break/actual.js |    8 +
 .../switch-expr-last-break/expected.js        |    8 +
 .../switch-expr-sequence-test/actual.js       |    8 +
 .../switch-expr-sequence-test/expected.js     |    7 +
 .../switch-expr-to-sequence/actual.js         |   12 +
 .../switch-expr-to-sequence/expected.js       |   11 +
 .../switch-expr-to-ternary-2/actual.js        |   12 +
 .../switch-expr-to-ternary-2/expected.js      |    3 +
 .../switch-expr-to-ternary-3/actual.js        |   11 +
 .../switch-expr-to-ternary-3/expected.js      |    3 +
 .../switch-expr-to-ternary-break-2/actual.js  |   17 +
 .../expected.js                               |    3 +
 .../switch-expr-to-ternary-break/actual.js    |   17 +
 .../switch-expr-to-ternary-break/expected.js  |    3 +
 .../actual.js                                 |   12 +
 .../expected.js                               |    3 +
 .../actual.js                                 |   17 +
 .../expected.js                               |    3 +
 .../fixtures/switch-expr-to-ternary/actual.js |   13 +
 .../switch-expr-to-ternary/expected.js        |    3 +
 .../template-literals-assignments/actual.js   |    1 +
 .../template-literals-assignments/expected.js |    1 +
 .../fixtures/throw-seq-expr/actual.js         |    4 +
 .../fixtures/throw-seq-expr/expected.js       |    3 +
 .../fixtures/to-sequence-expr-2/actual.js     |    6 +
 .../fixtures/to-sequence-expr-2/expected.js   |    6 +
 .../fixtures/to-sequence-expr/actual.js       |   18 +
 .../fixtures/to-sequence-expr/expected.js     |   18 +
 .../fixtures/to-sequence-return-2/actual.js   |   10 +
 .../fixtures/to-sequence-return-2/expected.js |    9 +
 .../fixtures/to-sequence-return/actual.js     |    5 +
 .../fixtures/to-sequence-return/expected.js   |    3 +
 .../__tests__/fixtures/to-sequence/actual.js  |    9 +
 .../fixtures/to-sequence/expected.js          |    7 +
 .../fixtures/unary-conditional-2/actual.js    |    1 +
 .../fixtures/unary-conditional-2/expected.js  |    1 +
 .../fixtures/unary-conditional/actual.js      |    1 +
 .../fixtures/unary-conditional/expected.js    |    1 +
 .../fixtures/unary-sequence/actual.js         |    1 +
 .../fixtures/unary-sequence/expected.js       |    1 +
 .../fixtures/whiles-to-fors-2/actual.js       |    6 +
 .../fixtures/whiles-to-fors-2/expected.js     |    3 +
 .../fixtures/whiles-to-fors-3/actual.js       |    7 +
 .../fixtures/whiles-to-fors-3/expected.js     |    5 +
 .../fixtures/whiles-to-fors/actual.js         |    5 +
 .../fixtures/whiles-to-fors/expected.js       |    3 +
 .../__tests__/index.js                        |    2 +
 .../__tests__/simplify-test.js                | 2236 +----------------
 233 files changed, 1321 insertions(+), 2228 deletions(-)
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/actual.js
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 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/actual.js
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 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/actual.js
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 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/actual.js
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 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/actual.js
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 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/expected.js
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 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/expected.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/actual.js
 create mode 100644 packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/expected.js
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diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/actual.js
new file mode 100644
index 000000000..f768fd836
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/actual.js
@@ -0,0 +1,2 @@
+const a = () => {};
+const b = () => {return;};
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/expected.js
new file mode 100644
index 000000000..34ef9cd09
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block-empty/expected.js
@@ -0,0 +1,2 @@
+const a = () => {};
+const b = () => {};
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/actual.js
new file mode 100644
index 000000000..62fabc84e
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/actual.js
@@ -0,0 +1,2 @@
+const a = () => {return (3, 4);};
+const b = () => {return 3;};
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/expected.js
new file mode 100644
index 000000000..d6cdea725
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-block/expected.js
@@ -0,0 +1,2 @@
+const a = () => (3, 4);
+const b = () => 3;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/actual.js
new file mode 100644
index 000000000..9b0c41fe4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/actual.js
@@ -0,0 +1 @@
+const f = () => a;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/expected.js
new file mode 100644
index 000000000..9b0c41fe4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/arrow-short-hand/expected.js
@@ -0,0 +1 @@
+const f = () => a;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/actual.js
new file mode 100644
index 000000000..3c3b52d0f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/actual.js
@@ -0,0 +1,10 @@
+function foo() {
+  if(window.self != window.top) {
+    if(__DEV__) {
+      console.log('lol', name);
+    }
+    return;
+  }
+  lol();
+  try { lol() } catch (e) {}
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/expected.js
new file mode 100644
index 000000000..3ab62cb62
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/bail-multiple-statements/expected.js
@@ -0,0 +1,8 @@
+function foo() {
+  if (window.self != window.top) return void (__DEV__ && console.log('lol', name));
+  lol();
+
+  try {
+    lol();
+  } catch (e) {}
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/actual.js
new file mode 100644
index 000000000..42f0903dc
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/actual.js
@@ -0,0 +1,4 @@
+for (var x = 0; x < 10; x++) {
+  console.log(x);
+  console.log(x);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/expected.js
new file mode 100644
index 000000000..951dc51f7
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/block-to-sequence/expected.js
@@ -0,0 +1 @@
+for (var x = 0; x < 10; x++) console.log(x), console.log(x);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/actual.js
new file mode 100644
index 000000000..7c0a950db
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/actual.js
@@ -0,0 +1,12 @@
+function foo() {
+  if (a) {
+    if (a.b) {
+      if(a.b.c) {
+        if(a.b.c()){
+          return;
+        }
+      }
+    }
+  }
+  for (; true;) wat();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/expected.js
new file mode 100644
index 000000000..94a9b0e91
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/combine-returns/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  if (!(a && a.b && a.b.c && a.b.c())) for (; true;) wat();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/actual.js
new file mode 100644
index 000000000..b32830de2
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/actual.js
@@ -0,0 +1,16 @@
+function f1() { return a == b ? true : x; }
+function f2() { return a == b ? false : x; }
+function f3() { return a < b ? !0 : x; }
+function f4() { return a < b ? !1 : x; }
+function f5() { return c ? !0 : x; }
+function f6() { return c ? false : x; }
+function f7() { return !c ? true : x; }
+function f8() { return !c ? !1 : x; }
+function g1() { return a == b ? x : true; }
+function g2() { return a == b ? x : false; }
+function g3() { return a < b ? x : !0; }
+function g4() { return a < b ? x : !1; }
+function g5() { return c ? x : true; }
+function g6() { return c ? x : !1; }
+function g7() { return !c ? x : !0; }
+function g8() { return !c ? x : false; }
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/expected.js
new file mode 100644
index 000000000..31f7f67f5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-expression-patterns/expected.js
@@ -0,0 +1,48 @@
+function f1() {
+  return !(a != b) || x;
+}
+function f2() {
+  return a != b && x;
+}
+function f3() {
+  return !!(a < b) || x;
+}
+function f4() {
+  return !(a < b) && x;
+}
+function f5() {
+  return !!c || x;
+}
+function f6() {
+  return !c && x;
+}
+function f7() {
+  return !c || x;
+}
+function f8() {
+  return !!c && x;
+}
+function g1() {
+  return a != b || x;
+}
+function g2() {
+  return !(a != b) && x;
+}
+function g3() {
+  return !(a < b) || x;
+}
+function g4() {
+  return !!(a < b) && x;
+}
+function g5() {
+  return !c || x;
+}
+function g6() {
+  return !!c && x;
+}
+function g7() {
+  return !!c || x;
+}
+function g8() {
+  return !c && x;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/actual.js
new file mode 100644
index 000000000..e19faa9b4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/actual.js
@@ -0,0 +1 @@
+function h1() { return a && b ? (foo(), true) : false }
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/expected.js
new file mode 100644
index 000000000..133976fb9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/common-conditional-operations/expected.js
@@ -0,0 +1,3 @@
+function h1() {
+  return !!(a && b) && (foo(), true);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/actual.js
new file mode 100644
index 000000000..95d1a829b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/actual.js
@@ -0,0 +1,4 @@
+if (!foo && foo !== bar) {
+  wow();
+  such();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/expected.js
new file mode 100644
index 000000000..6c0ed13d1
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors-2/expected.js
@@ -0,0 +1 @@
+!foo && foo !== bar && (wow(), such());
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/actual.js
new file mode 100644
index 000000000..19c987540
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/actual.js
@@ -0,0 +1,2 @@
+x();
+if (!foo.bar) foo.bar = wat;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/expected.js
new file mode 100644
index 000000000..990719c24
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/convert-gaurded-nots-to-ors/expected.js
@@ -0,0 +1 @@
+x(), !foo.bar && (foo.bar = wat);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/actual.js
new file mode 100644
index 000000000..1e8664198
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/actual.js
@@ -0,0 +1,3 @@
+do {
+  foo();
+} while (1);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/expected.js
new file mode 100644
index 000000000..b159bf8b3
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/do-while/expected.js
@@ -0,0 +1 @@
+do foo(); while (1);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/actual.js
new file mode 100644
index 000000000..f7f4e69a8
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  wow();
+  if (x) {
+    return;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/expected.js
new file mode 100644
index 000000000..7340ba31f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-return-2/expected.js
@@ -0,0 +1,4 @@
+function foo() {
+  wow();
+  x;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/actual.js
new file mode 100644
index 000000000..6c4bbaec0
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/actual.js
@@ -0,0 +1,19 @@
+function foo(a) {
+  if (lol) return;
+  doThings();
+  doOtherThings();
+}
+function bar(a) {
+  if (lol) {
+    return;
+  }
+  try {
+    doThings();
+  } catch (e) {
+    doOtherThings();
+  }
+}
+function baz() {
+  while (wow) if (lol) return;
+  boo();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/expected.js
new file mode 100644
index 000000000..084aa9c39
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/early-returns/expected.js
@@ -0,0 +1,15 @@
+function foo(a) {
+  lol || (doThings(), doOtherThings());
+}
+function bar(a) {
+  if (!lol) try {
+      doThings();
+    } catch (e) {
+      doOtherThings();
+    }
+}
+function baz() {
+  for (; wow;) if (lol) return;
+
+  boo();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/actual.js
new file mode 100644
index 000000000..bd4079352
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  for (i in p) {}
+  for (; ;) {}
+  switch(1) {}
+  try { a } catch(e) {}
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/expected.js
new file mode 100644
index 000000000..756add0a3
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-blocks-to-empty-statements/expected.js
@@ -0,0 +1,8 @@
+function foo() {
+  for (i in p);
+  for (;;);
+  switch (1) {}
+  try {
+    a;
+  } catch (e) {}
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/actual.js
new file mode 100644
index 000000000..0dc63acae
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/actual.js
@@ -0,0 +1,4 @@
+function foo() {
+  lol();
+  return;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/expected.js
new file mode 100644
index 000000000..80da67d88
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-return/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  lol();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/actual.js
new file mode 100644
index 000000000..1cf5a511d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/actual.js
@@ -0,0 +1 @@
+var x = 1, y, z = 2, zx, a;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/expected.js
new file mode 100644
index 000000000..adb1f26e4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/empty-vars-first/expected.js
@@ -0,0 +1,5 @@
+var y,
+    zx,
+    a,
+    x = 1,
+    z = 2;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/actual.js
new file mode 100644
index 000000000..d291eba53
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/actual.js
@@ -0,0 +1 @@
+if (!(!a && b == a && !b && b < a)) for(;;) a();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/expected.js
new file mode 100644
index 000000000..260b81a50
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-binary-expressions/expected.js
@@ -0,0 +1 @@
+if (a || b != a || b || !(b < a)) for (;;) a();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/actual.js
new file mode 100644
index 000000000..ebf50dcba
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/actual.js
@@ -0,0 +1 @@
+!foo ? 'foo' : 'bar';
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/expected.js
new file mode 100644
index 000000000..676221ae7
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-conditionals/expected.js
@@ -0,0 +1 @@
+foo ? 'bar' : 'foo';
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/actual.js
new file mode 100644
index 000000000..d23bd015f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/actual.js
@@ -0,0 +1 @@
+if (!(1 !== foo || !bar)) for (;;);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/expected.js
new file mode 100644
index 000000000..796e6c0b7
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr-2/expected.js
@@ -0,0 +1 @@
+if (1 === foo && bar) for (;;);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/actual.js
new file mode 100644
index 000000000..bfa5e3e1f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/actual.js
@@ -0,0 +1,2 @@
+!x && foo();
+if (!(null == r)) for (;;);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/expected.js
new file mode 100644
index 000000000..a17fecaa0
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/flip-logical-expr/expected.js
@@ -0,0 +1,2 @@
+
+if (!x && foo(), null != r) for (;;);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/actual.js
new file mode 100644
index 000000000..b747012bc
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  x = 1;
+  a();
+  for (var a in b) wow();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/expected.js
new file mode 100644
index 000000000..e3c0da60a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/for-sequence/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  for (var a in x = 1, a(), b) wow();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/actual.js
new file mode 100644
index 000000000..2493be00c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/actual.js
@@ -0,0 +1,4 @@
+function x(a, b) {
+  a = a || b;
+  return b === a || !a;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/expected.js
new file mode 100644
index 000000000..7dc04a95b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean-2/expected.js
@@ -0,0 +1,3 @@
+function x(a, b) {
+  return a = a || b, b === a || !a;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean/actual.js
new file mode 100644
index 000000000..c5c194d1b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean/actual.js
@@ -0,0 +1,3 @@
+function x(a) {
+  return !!a;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean/expected.js
new file mode 100644
index 000000000..c5c194d1b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-to-boolean/expected.js
@@ -0,0 +1,3 @@
+function x(a) {
+  return !!a;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns-2/actual.js
new file mode 100644
index 000000000..8936e2644
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns-2/actual.js
@@ -0,0 +1,9 @@
+function foo(a) {
+  if (a && a.b != null) {
+    if ((a.c--) === 1) {
+      return;
+    }
+    return a.b;
+  }
+  return bar(a);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns-2/expected.js
new file mode 100644
index 000000000..3531cf519
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns-2/expected.js
@@ -0,0 +1,3 @@
+function foo(a) {
+  return a && a.b != null ? a.c-- === 1 ? void 0 : a.b : bar(a);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns/actual.js
new file mode 100644
index 000000000..02cfa0f49
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (a) {
+    return;
+  }
+
+  return wow;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns/expected.js
new file mode 100644
index 000000000..41e5dc129
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/handle-void-returns/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return a ? void 0 : wow;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/actual.js
new file mode 100644
index 000000000..26c21cbb5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  a();
+  function bar() {}
+  b();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/expected.js
new file mode 100644
index 000000000..38be96a2f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/hoist-functions/expected.js
@@ -0,0 +1,4 @@
+function foo() {
+  function bar() {}
+  a(), b();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/actual.js
new file mode 100644
index 000000000..c5cb9ab02
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/actual.js
@@ -0,0 +1,4 @@
+for (i = 1; i <= j; i++) {
+  foo();
+  if (bar) break;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/expected.js
new file mode 100644
index 000000000..409205000
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-2/expected.js
@@ -0,0 +1 @@
+for (i = 1; i <= j && (foo(), !bar); i++);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-3/actual.js
new file mode 100644
index 000000000..27cb340f2
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-3/actual.js
@@ -0,0 +1,8 @@
+for (i = 1; i <= j; i++) {
+  if (bar) {
+    break;
+  } else {
+    wat();
+    if (x) throw 1
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-3/expected.js
new file mode 100644
index 000000000..8ece8bc2a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-3/expected.js
@@ -0,0 +1 @@
+for (i = 1; i <= j && !bar; i++) if (wat(), x) throw 1;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/actual.js
new file mode 100644
index 000000000..82b3e3280
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/actual.js
@@ -0,0 +1,8 @@
+for (i = 1; i <= j; i++) {
+  if (bar) {
+    wat();
+    if (x) throw 1;
+  } else {
+    break;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/expected.js
new file mode 100644
index 000000000..471c119d9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-4/expected.js
@@ -0,0 +1 @@
+for (i = 1; i <= j && !!bar; i++) if (wat(), x) throw 1;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-5/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-5/actual.js
new file mode 100644
index 000000000..90ca40ded
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-5/actual.js
@@ -0,0 +1,10 @@
+for (i = 1; i <= j; i++) {
+  foo();
+  if (bar) {
+    break;
+  } else {
+    wat();
+    if (x) throw 1
+  }
+  hi();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-5/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-5/expected.js
new file mode 100644
index 000000000..7000a0174
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break-5/expected.js
@@ -0,0 +1,4 @@
+for (i = 1; i <= j && (foo(), !bar); i++) {
+  if (wat(), x) throw 1;
+  hi();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break/actual.js
new file mode 100644
index 000000000..c29956729
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break/actual.js
@@ -0,0 +1,3 @@
+for (i = 1; i <= j; i++) {
+  if (bar) break;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break/expected.js
new file mode 100644
index 000000000..7f0c4dd2f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-break/expected.js
@@ -0,0 +1 @@
+for (i = 1; i <= j && !bar; i++);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-complex/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-complex/actual.js
new file mode 100644
index 000000000..555d2b6ab
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-complex/actual.js
@@ -0,0 +1,17 @@
+function foo(a) {
+  if (a && a.b != null) {
+    if ((a.c--) === 1) {
+      delete a.c;
+    }
+    return a.b;
+  }
+  return bar(a);
+}
+
+function foo2(a) {
+  if (a) {
+    return a.b;
+  } else {
+    return bar(a);
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-complex/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-complex/expected.js
new file mode 100644
index 000000000..273b609ba
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-complex/expected.js
@@ -0,0 +1,7 @@
+function foo(a) {
+  return a && a.b != null ? (a.c-- === 1 && delete a.c, a.b) : bar(a);
+}
+
+function foo2(a) {
+  return a ? a.b : bar(a);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-2/actual.js
new file mode 100644
index 000000000..da2eddcde
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-2/actual.js
@@ -0,0 +1,12 @@
+function foo() {
+  if (x) {
+    delete x.x;
+    if (bar()) return 2;
+  }
+
+  if (bar) {
+    x();
+  } else {
+    y();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-2/expected.js
new file mode 100644
index 000000000..1fa7aef9b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-2/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return x && (delete x.x, bar()) ? 2 : void (bar ? x() : y());
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/actual.js
new file mode 100644
index 000000000..dacbb77ca
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  if (x) {
+    delete x.x;
+    if (bar()) return;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/expected.js
new file mode 100644
index 000000000..d4c218465
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-3/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  x && (delete x.x, bar());
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-4/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-4/actual.js
new file mode 100644
index 000000000..ca7ad3cd5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-4/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (x) {
+    var f = wow;
+    delete x.x;
+    if (bar()) return;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-4/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-4/expected.js
new file mode 100644
index 000000000..35d6cffd4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return-4/expected.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (x) {
+    var f = wow;
+
+    if (delete x.x, bar()) return;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/actual.js
new file mode 100644
index 000000000..fb14de5a9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/actual.js
@@ -0,0 +1,12 @@
+function foo() {
+  if (x) {
+    delete x.x;
+    if (bar()) return;
+  }
+
+  if (bar) {
+    x();
+  } else {
+    y();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/expected.js
new file mode 100644
index 000000000..05759a75b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-conditional-return/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  x && (delete x.x, bar()) || (bar ? x() : y());
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/actual.js
new file mode 100644
index 000000000..843629f97
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/actual.js
@@ -0,0 +1,5 @@
+for (;;) {
+  a = b;
+  if (!foo) continue;
+  bar = foo;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/expected.js
new file mode 100644
index 000000000..15e649ff9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-2/expected.js
@@ -0,0 +1 @@
+for (;;) a = b, foo && (bar = foo);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/actual.js
new file mode 100644
index 000000000..6efce2124
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/actual.js
@@ -0,0 +1,10 @@
+function wow() {
+  for(;;) {
+    if (foo) {
+      if (bar) {
+        continue;
+      }
+    }
+    wat();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/expected.js
new file mode 100644
index 000000000..68756b501
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue-3/expected.js
@@ -0,0 +1,3 @@
+function wow() {
+  for (;;) foo && bar || wat();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/actual.js
new file mode 100644
index 000000000..4a20c2b67
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/actual.js
@@ -0,0 +1,4 @@
+for (var p in foo) {
+  if (p) continue;
+  bar();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/expected.js
new file mode 100644
index 000000000..b22ad0ec2
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-continue/expected.js
@@ -0,0 +1 @@
+for (var p in foo) p || bar();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/actual.js
new file mode 100644
index 000000000..a90a948a9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/actual.js
@@ -0,0 +1,7 @@
+if (false) {
+  let { a } = foo();
+} else if (true) {
+  const x = bar();
+} else {
+  function baz() {}
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/expected.js
new file mode 100644
index 000000000..a90a948a9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-else-blocks/expected.js
@@ -0,0 +1,7 @@
+if (false) {
+  let { a } = foo();
+} else if (true) {
+  const x = bar();
+} else {
+  function baz() {}
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/actual.js
new file mode 100644
index 000000000..7c45d3135
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/actual.js
@@ -0,0 +1,13 @@
+if (a) {
+} else {
+  foo();
+}
+
+if (a) {
+  foo();
+} else if (b) {
+}
+
+if (a) {
+} else {
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/expected.js
new file mode 100644
index 000000000..276a54207
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-empty-blocks/expected.js
@@ -0,0 +1 @@
+a || foo(), a ? foo() : b, a;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/actual.js
new file mode 100644
index 000000000..90e949f99
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/actual.js
@@ -0,0 +1,11 @@
+function foo() {
+  if (foo) {
+    if (bar) {
+      return false;
+    }
+    if (baz) {
+      return false;
+    }
+  }
+  return true;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/expected.js
new file mode 100644
index 000000000..b72d76d15
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-2/expected.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (foo) {
+    if (bar) return false;
+    if (baz) return false;
+  }
+  return true;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/actual.js
new file mode 100644
index 000000000..a7af0b284
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/actual.js
@@ -0,0 +1,7 @@
+function x() {
+  for (;;) {
+    x();
+    if (foo) return 1;
+    else y();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/expected.js
new file mode 100644
index 000000000..5d5711354
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-3/expected.js
@@ -0,0 +1,6 @@
+function x() {
+  for (;;) {
+    if (x(), foo) return 1;
+    y();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-4/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-4/actual.js
new file mode 100644
index 000000000..91226f4b4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-4/actual.js
@@ -0,0 +1,7 @@
+function x() {
+  if (!bar) return;
+  var x = foo;
+  if (!foo) return
+  if (y)
+    throw y;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-4/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-4/expected.js
new file mode 100644
index 000000000..1568d86d8
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-4/expected.js
@@ -0,0 +1,6 @@
+function x() {
+  if (bar) {
+      var x = foo;
+      if (foo && y) throw y;
+    }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-5/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-5/actual.js
new file mode 100644
index 000000000..8d33d87ee
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-5/actual.js
@@ -0,0 +1,9 @@
+function x() {
+  var x = foo;
+  if (hi) {
+    var y = z;
+    if (!foo) return;
+    if (x) throw y;
+  }
+  x();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-5/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-5/expected.js
new file mode 100644
index 000000000..8d33d87ee
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-5/expected.js
@@ -0,0 +1,9 @@
+function x() {
+  var x = foo;
+  if (hi) {
+    var y = z;
+    if (!foo) return;
+    if (x) throw y;
+  }
+  x();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-6/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-6/actual.js
new file mode 100644
index 000000000..5b27562e5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-6/actual.js
@@ -0,0 +1,8 @@
+function foo() {
+  if (a) {
+    if (x) return;
+    else return x;
+  }
+  const b = 1;
+  return "doesn't matter if this is reached or not";
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-6/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-6/expected.js
new file mode 100644
index 000000000..e9856a37d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-6/expected.js
@@ -0,0 +1,5 @@
+function foo() {
+  if (a) return x ? void 0 : x;
+  const b = 1;
+  return "doesn't matter if this is reached or not";
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-hoisted-fn/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-hoisted-fn/actual.js
new file mode 100644
index 000000000..9803e87d4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-hoisted-fn/actual.js
@@ -0,0 +1,9 @@
+function foo() {
+  bar();
+  if(x) return;
+  const {a}=b;
+  function bar () {
+    baz();
+    bar();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-hoisted-fn/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-hoisted-fn/expected.js
new file mode 100644
index 000000000..dcc00c881
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return-hoisted-fn/expected.js
@@ -0,0 +1,9 @@
+function foo() {
+  function bar() {
+    baz(), bar();
+  }
+
+  if (bar(), !x) {
+      const { a } = b;
+    }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return/actual.js
new file mode 100644
index 000000000..2bcfaba08
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  if (x) {
+    delete x.x;
+    if (bar()) return x;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return/expected.js
new file mode 100644
index 000000000..9da5d639c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-return/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  if (x && (delete x.x, bar())) return x;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-sequence-test/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-sequence-test/actual.js
new file mode 100644
index 000000000..c9b62773c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-sequence-test/actual.js
@@ -0,0 +1,6 @@
+function bar() {
+  wow();
+  if (foo) {
+    throw x();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-sequence-test/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-sequence-test/expected.js
new file mode 100644
index 000000000..6c0b0beeb
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-sequence-test/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  if (wow(), foo) throw x();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-gaurds/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-gaurds/actual.js
new file mode 100644
index 000000000..e6cc1c159
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-gaurds/actual.js
@@ -0,0 +1,3 @@
+function foo() {
+  if (x) a();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-gaurds/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-gaurds/expected.js
new file mode 100644
index 000000000..f6bae1ce5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-gaurds/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  x && a();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-10/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-10/actual.js
new file mode 100644
index 000000000..285ab30ee
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-10/actual.js
@@ -0,0 +1,8 @@
+var x;
+if (a) {
+  x = foo;
+} else if (b) {
+  x = bar;
+} else {
+  y = baz;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-10/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-10/expected.js
new file mode 100644
index 000000000..433aa7913
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-10/expected.js
@@ -0,0 +1,2 @@
+var x;
+a ? x = foo : b ? x = bar : y = baz;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-11/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-11/actual.js
new file mode 100644
index 000000000..58cb84103
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-11/actual.js
@@ -0,0 +1,8 @@
+var x;
+if (a) {
+  x = foo;
+} else if (b) {
+  x = bar;
+} else {
+  baz();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-11/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-11/expected.js
new file mode 100644
index 000000000..dec2dbb83
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-11/expected.js
@@ -0,0 +1,2 @@
+var x;
+a ? x = foo : b ? x = bar : baz();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-12/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-12/actual.js
new file mode 100644
index 000000000..65064de0c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-12/actual.js
@@ -0,0 +1,7 @@
+if (a) {
+  x.b = foo;
+} else if (b) {
+  x.b = bar;
+} else {
+  x.b = baz;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-12/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-12/expected.js
new file mode 100644
index 000000000..a34d6234d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-12/expected.js
@@ -0,0 +1 @@
+x.b = a ? foo : b ? bar : baz;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-2/actual.js
new file mode 100644
index 000000000..53e251974
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-2/actual.js
@@ -0,0 +1,8 @@
+function foo() {
+  if (1) {
+    return 2;
+  } else {
+    lol(1);
+    lol(2);
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-2/expected.js
new file mode 100644
index 000000000..113430884
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-2/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return 1 ? 2 : void (lol(1), lol(2));
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-3/actual.js
new file mode 100644
index 000000000..09036200a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-3/actual.js
@@ -0,0 +1,9 @@
+function foo() {
+  if(window.self != window.top) {
+    if(__DEV__) {
+      console.log('lol', name);
+    }
+    return;
+  }
+  lol();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-3/expected.js
new file mode 100644
index 000000000..e9184addf
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-3/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return window.self == window.top ? void lol() : void (__DEV__ && console.log('lol', name));
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-4/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-4/actual.js
new file mode 100644
index 000000000..3c3416d16
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-4/actual.js
@@ -0,0 +1,8 @@
+function foo() {
+  if (b) {
+    return foo;
+  } else {
+    a();
+    b();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-4/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-4/expected.js
new file mode 100644
index 000000000..06072bc50
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-4/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return b ? foo : void (a(), b());
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-5/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-5/actual.js
new file mode 100644
index 000000000..1d6d6bfdc
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-5/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (b) {
+    foo();
+  } else {
+    return bar;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-5/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-5/expected.js
new file mode 100644
index 000000000..24ff8e982
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-5/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return b ? void foo() : bar;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-6/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-6/actual.js
new file mode 100644
index 000000000..5644e9ad1
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-6/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (b) {
+    foo();
+  } else {
+    return;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-6/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-6/expected.js
new file mode 100644
index 000000000..d7d36d031
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-6/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  b && foo();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-7/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-7/actual.js
new file mode 100644
index 000000000..17c458c79
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-7/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (b) {
+    return;
+  } else {
+    foo();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-7/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-7/expected.js
new file mode 100644
index 000000000..57871f0f1
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-7/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  b || foo();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-8/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-8/actual.js
new file mode 100644
index 000000000..40f77ad08
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-8/actual.js
@@ -0,0 +1,22 @@
+function lawl() {
+  var a = 1;
+  if (b) {
+    return c;
+  }
+
+  if (a) {
+    bar();
+    return;
+  }
+
+  if (d) {
+    if (g) {
+      this['s'] = morebutts;
+      return wat;
+    }
+    return boo;
+  }
+
+  haha();
+  return butts;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-8/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-8/expected.js
new file mode 100644
index 000000000..b7d8bab7d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-8/expected.js
@@ -0,0 +1,4 @@
+function lawl() {
+  var a = 1;
+  return b ? c : a ? void bar() : d ? g ? (this['s'] = morebutts, wat) : boo : (haha(), butts);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-9/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-9/actual.js
new file mode 100644
index 000000000..0e55be40e
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-9/actual.js
@@ -0,0 +1,8 @@
+var x;
+if (a) {
+  x = foo;
+} else if (b) {
+  x = bar;
+} else {
+  x = baz;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-9/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-9/expected.js
new file mode 100644
index 000000000..8ac672d52
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-9/expected.js
@@ -0,0 +1,2 @@
+var x;
+x = a ? foo : b ? bar : baz;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-2/actual.js
new file mode 100644
index 000000000..417fb8a25
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-2/actual.js
@@ -0,0 +1,7 @@
+if (a) {
+  x.b += foo;
+} else if (b) {
+  x.b -= bar;
+} else {
+  x.b += baz;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-2/expected.js
new file mode 100644
index 000000000..9582d9ca7
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-2/expected.js
@@ -0,0 +1 @@
+a ? x.b += foo : b ? x.b -= bar : x.b += baz;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-3/actual.js
new file mode 100644
index 000000000..e285eff40
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-3/actual.js
@@ -0,0 +1,5 @@
+if (a) {
+  this.a = 1;
+} else {
+  this.b = 2;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-3/expected.js
new file mode 100644
index 000000000..b44c03716
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator-3/expected.js
@@ -0,0 +1 @@
+a ? this.a = 1 : this.b = 2;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator/actual.js
new file mode 100644
index 000000000..bda1d87da
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator/actual.js
@@ -0,0 +1,7 @@
+if (a) {
+  x.b += foo;
+} else if (b) {
+  x.b += bar;
+} else {
+  x.b += baz;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator/expected.js
new file mode 100644
index 000000000..f28700aac
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-assignment-operator/expected.js
@@ -0,0 +1 @@
+x.b += a ? foo : b ? bar : baz;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-return-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-return-2/actual.js
new file mode 100644
index 000000000..27d749e25
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-return-2/actual.js
@@ -0,0 +1,12 @@
+function foo() {
+  if (foo) {
+    bar(foo);
+    return foo;
+  } else if (baz) {
+    bar(baz);
+    return baz;
+  } else if (wat) {
+    bar(wat);
+    return wat;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-return-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-return-2/expected.js
new file mode 100644
index 000000000..937bee0de
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary-return-2/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return foo ? (bar(foo), foo) : baz ? (bar(baz), baz) : wat ? (bar(wat), wat) : void 0;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary/actual.js
new file mode 100644
index 000000000..f77e310db
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary/actual.js
@@ -0,0 +1,4 @@
+function foo() {
+  if (x) a();
+  else b();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary/expected.js
new file mode 100644
index 000000000..4c589d514
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/if-to-ternary/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  x ? a() : b();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/actual.js
new file mode 100644
index 000000000..8d3f5ea18
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/actual.js
@@ -0,0 +1,6 @@
+(function() {
+  x();
+})();
+y = function () {
+  x();
+}();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/expected.js
new file mode 100644
index 000000000..1483ff09c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/expected.js
@@ -0,0 +1,5 @@
+!function () {
+  x();
+}(), y = function () {
+  x();
+}();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/skip b/packages/babel-plugin-minify-simplify/__tests__/fixtures/iife-to-unary/skip
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-115/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-115/actual.js
new file mode 100644
index 000000000..4c1ebedb3
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-115/actual.js
@@ -0,0 +1,4 @@
+(function () {
+  a = x ? true : false;
+  c = 1 ? (this.get(x), a = b, true) : (foo.bar, false);
+})();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-115/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-115/expected.js
new file mode 100644
index 000000000..9dd4597ed
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-115/expected.js
@@ -0,0 +1,3 @@
+(function () {
+  a = !!x, c = 1 ? (this.get(x), a = b, true) : (foo.bar, false);
+})();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-198/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-198/actual.js
new file mode 100644
index 000000000..a3fa6eeac
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-198/actual.js
@@ -0,0 +1,8 @@
+function foo() {
+  let a,
+      { b } = x;
+  while (true) {
+    bar(a, b);
+  }
+  return [a, b];
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-198/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-198/expected.js
new file mode 100644
index 000000000..8a14b13e4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-198/expected.js
@@ -0,0 +1,8 @@
+function foo() {
+  let a,
+      { b } = x;
+
+  for (; true;) bar(a, b);
+
+  return [a, b];
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-208/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-208/actual.js
new file mode 100644
index 000000000..18fc4b635
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-208/actual.js
@@ -0,0 +1,5 @@
+!function () {
+  var x;
+  { }
+  alert(x);
+}()
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-208/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-208/expected.js
new file mode 100644
index 000000000..7b283eb6e
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-208/expected.js
@@ -0,0 +1,4 @@
+!function () {
+  var x;
+  alert(x);
+}();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-281/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-281/actual.js
new file mode 100644
index 000000000..d4876ffea
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-281/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  if (x)
+    return;
+  function bar() {}
+  bar(a);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-281/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-281/expected.js
new file mode 100644
index 000000000..928868cd7
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-281/expected.js
@@ -0,0 +1,4 @@
+function foo() {
+  function bar() {}
+  x || bar(a);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-423/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-423/actual.js
new file mode 100644
index 000000000..c085935d3
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-423/actual.js
@@ -0,0 +1,11 @@
+function foo(bar) {
+  switch (bar) {
+    case 'a':
+      return 1;
+    case 'b':
+    default:
+      return 4;
+    case 'c':
+      return 3;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-423/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-423/expected.js
new file mode 100644
index 000000000..94c76105f
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-423/expected.js
@@ -0,0 +1,3 @@
+function foo(bar) {
+  return bar === 'a' ? 1 : bar === 'c' ? 3 : 4;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-455/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-455/actual.js
new file mode 100644
index 000000000..8c91cc0cb
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-455/actual.js
@@ -0,0 +1,7 @@
+function foo(param) {
+  if (param === null) return;
+  let thingA = param.a;
+  let thingB = param.b;
+  if (!thingA && !thingB) return;
+  let thingC = param.c;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-455/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-455/expected.js
new file mode 100644
index 000000000..8fd7d74bb
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-455/expected.js
@@ -0,0 +1,9 @@
+function foo(param) {
+  if (param !== null) {
+      let thingA = param.a;
+      let thingB = param.b;
+      if (thingA || thingB) {
+          let thingC = param.c;
+        }
+    }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-560/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-560/actual.js
new file mode 100644
index 000000000..2add8c987
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-560/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  while (true) {
+    const {x} = a;
+    const {y} = b;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-560/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-560/expected.js
new file mode 100644
index 000000000..19b81c12a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-560/expected.js
@@ -0,0 +1,6 @@
+function foo() {
+  for (; true;) {
+    const { x } = a;
+    const { y } = b;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-637/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-637/actual.js
new file mode 100644
index 000000000..08a36c594
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-637/actual.js
@@ -0,0 +1,9 @@
+function test(a) {
+  const clash = () => {};
+  if (a) {
+    return clash();
+  } else {
+    const clash = () => {};
+    return clash();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-637/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-637/expected.js
new file mode 100644
index 000000000..d3ec1b882
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-637/expected.js
@@ -0,0 +1,7 @@
+function test(a) {
+  const clash = () => {};
+  if (a) return clash();else {
+    const clash = () => {};
+    return clash();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-689/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-689/actual.js
new file mode 100644
index 000000000..89f3155a6
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-689/actual.js
@@ -0,0 +1,7 @@
+function foo(object, property, value) {
+  if (object && property) {
+    object[property] = value;
+    return true;
+  }
+  return false;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-689/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-689/expected.js
new file mode 100644
index 000000000..9f0a20972
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/issue-689/expected.js
@@ -0,0 +1,3 @@
+function foo(object, property, value) {
+  return !!(object && property) && (object[property] = value, true);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/keep-directives/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/keep-directives/actual.js
new file mode 100644
index 000000000..95cbbf932
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/keep-directives/actual.js
@@ -0,0 +1,4 @@
+function a() {
+  'use strict';
+  foo();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/keep-directives/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/keep-directives/expected.js
new file mode 100644
index 000000000..10faa5195
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/keep-directives/expected.js
@@ -0,0 +1,5 @@
+function a() {
+  'use strict';
+
+  foo();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-2/actual.js
new file mode 100644
index 000000000..e9b2edc6d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-2/actual.js
@@ -0,0 +1,8 @@
+// FIXME: for some reason, the inner `if` statement gets indented 4 spaces.
+`
+    function foo() {
+      if (a) {
+          if (b()) return false;
+      } else if (c()) return true;
+    }
+  `
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-2/expected.js
new file mode 100644
index 000000000..5f93aa5ae
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-2/expected.js
@@ -0,0 +1,7 @@
+`
+    function foo() {
+      if (a) {
+          if (b()) return false;
+      } else if (c()) return true;
+    }
+  `;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-3/actual.js
new file mode 100644
index 000000000..609193ddd
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-3/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  if (a) return b;
+  if (c) return d;
+  return e;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-3/expected.js
new file mode 100644
index 000000000..f1c16162e
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-3/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return a ? b : c ? d : e;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-4/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-4/actual.js
new file mode 100644
index 000000000..bfafc5fce
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-4/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  if (bar) return;
+  if (far) return;
+  if (faz) return;
+
+  return e;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-4/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-4/expected.js
new file mode 100644
index 000000000..f77b44841
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-4/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return bar || far || faz ? void 0 : e;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-5/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-5/actual.js
new file mode 100644
index 000000000..ae2b48170
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-5/actual.js
@@ -0,0 +1,13 @@
+if (x) {
+  try {
+    foo();
+  } catch (e) {}
+} else if (y) {
+  if (a) {
+    bar();
+  } else if (b) {
+    baz();
+  } else {
+    for (;;) 1;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-5/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-5/expected.js
new file mode 100644
index 000000000..b0a295026
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if-5/expected.js
@@ -0,0 +1,3 @@
+if (x) try {
+    foo();
+  } catch (e) {} else if (y) if (a) bar();else if (b) baz();else for (;;) 1;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if/actual.js
new file mode 100644
index 000000000..322df8e30
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if/actual.js
@@ -0,0 +1,5 @@
+if (a) {
+  if (b) {
+    throw 'wow';
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if/expected.js
new file mode 100644
index 000000000..d7b2171d4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-if/expected.js
@@ -0,0 +1 @@
+if (a && b) throw 'wow';
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-return/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-return/actual.js
new file mode 100644
index 000000000..8d75ccf0a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-return/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  if (a) return b;
+  c = d;
+  return z;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-return/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-return/expected.js
new file mode 100644
index 000000000..5cb5110f1
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-return/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return a ? b : (c = d, z);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init-2/actual.js
new file mode 100644
index 000000000..73c11cd68
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init-2/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  x();
+  y();
+  for (z(); i < 10; i++) z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init-2/expected.js
new file mode 100644
index 000000000..62bcaa0cb
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init-2/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  for (x(), y(), z(); i < 10; i++) z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init/actual.js
new file mode 100644
index 000000000..07361b35a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  x();
+  y();
+  for (; i < 10; i++) z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init/expected.js
new file mode 100644
index 000000000..40d868a82
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/merge-to-for-init/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  for (x(), y(); i < 10; i++) z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block-2/actual.js
new file mode 100644
index 000000000..b5d446ff9
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block-2/actual.js
@@ -0,0 +1,5 @@
+function x() {
+  if (a) {
+    if (b) for (;;) wow();
+  } else c();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block-2/expected.js
new file mode 100644
index 000000000..eed9fd8f7
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block-2/expected.js
@@ -0,0 +1,3 @@
+function x() {
+  if (!a) c();else if (b) for (;;) wow();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block/actual.js
new file mode 100644
index 000000000..eca76412b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block/actual.js
@@ -0,0 +1,11 @@
+function x() {
+  if (a) {
+    if (b) {
+      for(;;) {
+        if (a) b();
+      }
+    }
+  } else {
+    wat();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block/expected.js
new file mode 100644
index 000000000..56fdfba73
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-block/expected.js
@@ -0,0 +1,3 @@
+function x() {
+  if (!a) wat();else if (b) for (;;) a && b();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-fn-expr-parens/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-fn-expr-parens/actual.js
new file mode 100644
index 000000000..e13383bdb
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-fn-expr-parens/actual.js
@@ -0,0 +1 @@
+x, (function() {})();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-fn-expr-parens/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-fn-expr-parens/expected.js
new file mode 100644
index 000000000..500f824d5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-fn-expr-parens/expected.js
@@ -0,0 +1 @@
+x, function () {}();
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-for-block/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-for-block/actual.js
new file mode 100644
index 000000000..c1a1e30e1
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-for-block/actual.js
@@ -0,0 +1,3 @@
+for (var x = 0; x < 10; x++) {
+  console.log(x);
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-for-block/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-for-block/expected.js
new file mode 100644
index 000000000..c2d37c43b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/remove-for-block/expected.js
@@ -0,0 +1 @@
+for (var x = 0; x < 10; x++) console.log(x);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/return-inside-loop/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/return-inside-loop/actual.js
new file mode 100644
index 000000000..a4d23b9bc
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/return-inside-loop/actual.js
@@ -0,0 +1,10 @@
+function foo() {
+  while(1) {
+    if (a === null) {
+      b();
+      return;
+    }
+    a();
+    b();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/return-inside-loop/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/return-inside-loop/expected.js
new file mode 100644
index 000000000..e7c8d026b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/return-inside-loop/expected.js
@@ -0,0 +1,6 @@
+function foo() {
+  for (; 1;) {
+    if (a === null) return void b();
+    a(), b();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/super-assignments/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/super-assignments/actual.js
new file mode 100644
index 000000000..92903584c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/super-assignments/actual.js
@@ -0,0 +1,5 @@
+class Foo {
+  foo() {
+    super.foo = super.foo + 1;
+  }
+};
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/super-assignments/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/super-assignments/expected.js
new file mode 100644
index 000000000..4c8311604
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/super-assignments/expected.js
@@ -0,0 +1,5 @@
+class Foo {
+  foo() {
+    ++super.foo;
+  }
+};
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break-2/actual.js
new file mode 100644
index 000000000..315d542da
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break-2/actual.js
@@ -0,0 +1,10 @@
+loop: while (foo) {
+  switch (bar) {
+    case 47:
+      break;
+  }
+  switch (baz) {
+    default:
+      break loop;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break-2/expected.js
new file mode 100644
index 000000000..d7a4cda0d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break-2/expected.js
@@ -0,0 +1,9 @@
+loop: for (; foo;) {
+  switch (bar) {
+    case 47:
+  }
+  switch (baz) {
+    default:
+      break loop;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break/actual.js
new file mode 100644
index 000000000..0871043fe
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break/actual.js
@@ -0,0 +1,8 @@
+switch (foo) {
+  case 'foo':
+    throw bar();
+    break;
+  case 'bar':
+    wow();
+    break;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break/expected.js
new file mode 100644
index 000000000..9d76b97dc
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-last-break/expected.js
@@ -0,0 +1,8 @@
+switch (foo) {
+  case 'foo':
+    throw bar();
+    break;
+  case 'bar':
+    wow();
+
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-sequence-test/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-sequence-test/actual.js
new file mode 100644
index 000000000..5b909d57e
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-sequence-test/actual.js
@@ -0,0 +1,8 @@
+function bar() {
+  wow();
+  switch (foo) {
+    case 'foo':
+      throw x();
+      break;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-sequence-test/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-sequence-test/expected.js
new file mode 100644
index 000000000..d1b16729d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-sequence-test/expected.js
@@ -0,0 +1,7 @@
+function bar() {
+  switch (wow(), foo) {
+    case 'foo':
+      throw x();
+
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-sequence/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-sequence/actual.js
new file mode 100644
index 000000000..b8544171d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-sequence/actual.js
@@ -0,0 +1,12 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      bar();
+      foo();
+      break;
+    case 'bar':
+      wow();
+      return wo;
+      break;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-sequence/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-sequence/expected.js
new file mode 100644
index 000000000..589ad3712
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-sequence/expected.js
@@ -0,0 +1,11 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      bar(), foo();
+
+      break;
+    case 'bar':
+      return wow(), wo;
+
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-2/actual.js
new file mode 100644
index 000000000..765bac8dd
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-2/actual.js
@@ -0,0 +1,12 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      return 1;
+    case foo.bar:
+      return 2;
+    case wow:
+      wow();
+      return 3;
+  }
+  return 0;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-2/expected.js
new file mode 100644
index 000000000..f4b5fe717
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-2/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  return foo === 'foo' ? 1 : foo === foo.bar ? 2 : foo === wow ? (wow(), 3) : 0;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-3/actual.js
new file mode 100644
index 000000000..100eb59c8
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-3/actual.js
@@ -0,0 +1,11 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      return 1;
+    case foo.bar:
+      return 2;
+    case wow:
+      wow();
+      return 3;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-3/expected.js
new file mode 100644
index 000000000..a34bfa8ae
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-3/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  return foo === 'foo' ? 1 : foo === foo.bar ? 2 : foo === wow ? (wow(), 3) : void 0;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break-2/actual.js
new file mode 100644
index 000000000..e6ce2ed53
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break-2/actual.js
@@ -0,0 +1,17 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      foo();
+      break;
+    case foo.bar:
+      wow();
+      wat();
+      break;
+    case shh:
+    case wow:
+      baa();
+      break;
+    default:
+      meh();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break-2/expected.js
new file mode 100644
index 000000000..03b9878be
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break-2/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  foo === 'foo' ? foo() : foo === foo.bar ? (wow(), wat()) : foo === shh || foo === wow ? baa() : meh();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break/actual.js
new file mode 100644
index 000000000..e6ce2ed53
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break/actual.js
@@ -0,0 +1,17 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      foo();
+      break;
+    case foo.bar:
+      wow();
+      wat();
+      break;
+    case shh:
+    case wow:
+      baa();
+      break;
+    default:
+      meh();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break/expected.js
new file mode 100644
index 000000000..03b9878be
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-break/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  foo === 'foo' ? foo() : foo === foo.bar ? (wow(), wat()) : foo === shh || foo === wow ? baa() : meh();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough-2/actual.js
new file mode 100644
index 000000000..0a806a424
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough-2/actual.js
@@ -0,0 +1,12 @@
+function foo(bar) {
+  switch (bar) {
+    case 'a':
+    case 'b':
+      return 1;
+    case 'd':
+    default:
+      return 4;
+    case 'c':
+      return 3;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough-2/expected.js
new file mode 100644
index 000000000..7b770914a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough-2/expected.js
@@ -0,0 +1,3 @@
+function foo(bar) {
+  return bar === 'a' || bar === 'b' ? 1 : bar === 'c' ? 3 : 4;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough/actual.js
new file mode 100644
index 000000000..b4d2b691a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough/actual.js
@@ -0,0 +1,17 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      return 1;
+    case foo.bar:
+    case wow:
+      wow();
+      return 3;
+    case boo:
+      return 4;
+    case baz:
+    case wat:
+      return 5;
+    default:
+      return 0;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough/expected.js
new file mode 100644
index 000000000..94606785b
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary-fallthrough/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  return foo === 'foo' ? 1 : foo === foo.bar || foo === wow ? (wow(), 3) : foo === boo ? 4 : foo === baz || foo === wat ? 5 : 0;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary/actual.js
new file mode 100644
index 000000000..268a75695
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary/actual.js
@@ -0,0 +1,13 @@
+function bar() {
+  switch (foo) {
+    case 'foo':
+      return 1;
+    case foo.bar:
+      return 2;
+    case wow:
+      wow();
+      return 3;
+    default:
+      return 0;
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary/expected.js
new file mode 100644
index 000000000..f4b5fe717
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/switch-expr-to-ternary/expected.js
@@ -0,0 +1,3 @@
+function bar() {
+  return foo === 'foo' ? 1 : foo === foo.bar ? 2 : foo === wow ? (wow(), 3) : 0;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/template-literals-assignments/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/template-literals-assignments/actual.js
new file mode 100644
index 000000000..2e5499be6
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/template-literals-assignments/actual.js
@@ -0,0 +1 @@
+foo[`x`] = foo[`x`] + 1;
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/template-literals-assignments/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/template-literals-assignments/expected.js
new file mode 100644
index 000000000..c4fb29ba5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/template-literals-assignments/expected.js
@@ -0,0 +1 @@
+foo[`x`] = foo[`x`] + 1;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/throw-seq-expr/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/throw-seq-expr/actual.js
new file mode 100644
index 000000000..5adad63d5
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/throw-seq-expr/actual.js
@@ -0,0 +1,4 @@
+function x() {
+  z();
+  throw y;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/throw-seq-expr/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/throw-seq-expr/expected.js
new file mode 100644
index 000000000..87ae1d0a2
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/throw-seq-expr/expected.js
@@ -0,0 +1,3 @@
+function x() {
+  throw z(), y;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr-2/actual.js
new file mode 100644
index 000000000..dc6f50793
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr-2/actual.js
@@ -0,0 +1,6 @@
+function bar() {
+  var z;
+  c();
+  for (z in { a: 1}) x(z);
+  z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr-2/expected.js
new file mode 100644
index 000000000..79c2b7656
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr-2/expected.js
@@ -0,0 +1,6 @@
+function bar() {
+  var z;
+
+  for (z in c(), { a: 1 }) x(z);
+  z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr/actual.js
new file mode 100644
index 000000000..ce9a2ed2a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr/actual.js
@@ -0,0 +1,18 @@
+function foo() {
+  a();
+  var x = bar();
+  b(x);
+  this.d = x;
+}
+function bar() {
+  x();
+  while (x) {
+    if (x) x();
+  }
+  try { y(); } catch (e) {}
+  var z = x();
+  z();
+  while (a) b();
+  c();
+  z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr/expected.js
new file mode 100644
index 000000000..602a2a928
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-expr/expected.js
@@ -0,0 +1,18 @@
+function foo() {
+  a();
+
+  var x = bar();
+  b(x), this.d = x;
+}
+function bar() {
+  for (x(); x;) x && x();
+
+  try {
+    y();
+  } catch (e) {}
+  var z = x();
+
+  for (z(); a;) b();
+
+  c(), z();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return-2/actual.js
new file mode 100644
index 000000000..bd0abd152
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return-2/actual.js
@@ -0,0 +1,10 @@
+function foo() {
+  try {
+    x();
+  } catch (e) {
+    1;
+  }
+
+  y();
+  return 1;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return-2/expected.js
new file mode 100644
index 000000000..b9ba266af
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return-2/expected.js
@@ -0,0 +1,9 @@
+function foo() {
+  try {
+    x();
+  } catch (e) {
+    1;
+  }
+
+  return y(), 1;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return/actual.js
new file mode 100644
index 000000000..2de9a968d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return/actual.js
@@ -0,0 +1,5 @@
+function foo() {
+  y();
+  x();
+  return 1;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return/expected.js
new file mode 100644
index 000000000..29524a6f8
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence-return/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  return y(), x(), 1;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence/actual.js
new file mode 100644
index 000000000..88d15dd0c
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence/actual.js
@@ -0,0 +1,9 @@
+x();
+y();
+for (var x = 0; x < 10; x++) {
+  var z = foo();
+  console.log(z);
+  console.log(z);
+}
+a();
+b = 1;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence/expected.js
new file mode 100644
index 000000000..61fc6a21a
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/to-sequence/expected.js
@@ -0,0 +1,7 @@
+x(), y();
+
+for (var x = 0; x < 10; x++) {
+  var z = foo();
+  console.log(z), console.log(z);
+}
+a(), b = 1;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional-2/actual.js
new file mode 100644
index 000000000..cd065277e
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional-2/actual.js
@@ -0,0 +1 @@
+!(!a && b) ? b : c
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional-2/expected.js
new file mode 100644
index 000000000..1fa9e73bf
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional-2/expected.js
@@ -0,0 +1 @@
+!a && b ? c : b;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional/actual.js
new file mode 100644
index 000000000..39dfb3f38
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional/actual.js
@@ -0,0 +1 @@
+!(a ? b : c);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional/expected.js
new file mode 100644
index 000000000..8d6812036
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-conditional/expected.js
@@ -0,0 +1 @@
+a ? !b : !c;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-sequence/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-sequence/actual.js
new file mode 100644
index 000000000..b5e774c92
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-sequence/actual.js
@@ -0,0 +1 @@
+!(a, b, c);
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-sequence/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-sequence/expected.js
new file mode 100644
index 000000000..69d7f06d4
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/unary-sequence/expected.js
@@ -0,0 +1 @@
+a, b, !c;
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-2/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-2/actual.js
new file mode 100644
index 000000000..a88c2a086
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-2/actual.js
@@ -0,0 +1,6 @@
+function foo() {
+  let bar = baz;
+  while(true) {
+    bar();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-2/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-2/expected.js
new file mode 100644
index 000000000..fec1e0a0d
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-2/expected.js
@@ -0,0 +1,3 @@
+function foo() {
+  for (let bar = baz; true;) bar();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-3/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-3/actual.js
new file mode 100644
index 000000000..143b6e6bd
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-3/actual.js
@@ -0,0 +1,7 @@
+function foo() {
+  var a = 1;
+  while (true) {
+    bar(a);
+  }
+  return a;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-3/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-3/expected.js
new file mode 100644
index 000000000..676a59fdf
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors-3/expected.js
@@ -0,0 +1,5 @@
+function foo() {
+  for (var a = 1; true;) bar(a);
+
+  return a;
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors/actual.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors/actual.js
new file mode 100644
index 000000000..03f317164
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors/actual.js
@@ -0,0 +1,5 @@
+function foo(a) {
+  while(true) {
+    bar();
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors/expected.js b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors/expected.js
new file mode 100644
index 000000000..de262d054
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/fixtures/whiles-to-fors/expected.js
@@ -0,0 +1,3 @@
+function foo(a) {
+  for (; true;) bar();
+}
\ No newline at end of file
diff --git a/packages/babel-plugin-minify-simplify/__tests__/index.js b/packages/babel-plugin-minify-simplify/__tests__/index.js
new file mode 100644
index 000000000..d7c81a111
--- /dev/null
+++ b/packages/babel-plugin-minify-simplify/__tests__/index.js
@@ -0,0 +1,2 @@
+const runner = require("test-runner");
+runner(__dirname);
diff --git a/packages/babel-plugin-minify-simplify/__tests__/simplify-test.js b/packages/babel-plugin-minify-simplify/__tests__/simplify-test.js
index ade42b62b..e37c27b70 100644
--- a/packages/babel-plugin-minify-simplify/__tests__/simplify-test.js
+++ b/packages/babel-plugin-minify-simplify/__tests__/simplify-test.js
@@ -39,1964 +39,23 @@ const thePlugin = require("test-transform")(plugin);
 
 describe("simplify-plugin", () => {
   thePlugin(
-    "should flip conditionals",
-    `
-    !foo ? 'foo' : 'bar';
-  `,
-    `
-    foo ? 'bar' : 'foo';
-  `
-  );
-
-  thePlugin(
-    "should turn a for loop block to a single statement",
-    `
-    for (var x = 0; x < 10; x++) {
-      console.log(x);
-    }
-  `,
-    `
-    for (var x = 0; x < 10; x++) console.log(x);
-  `
-  );
-
-  thePlugin(
-    "should turn block statements into a comma expression",
-    `
-      for (var x = 0; x < 10; x++) {
-        console.log(x);
-        console.log(x);
-      }
-    `,
-    `
-      for (var x = 0; x < 10; x++) console.log(x), console.log(x);
-  `
-  );
-
-  thePlugin(
-    "should merge lines of code into one comma expression where possible",
-    `
-    x();
-    y();
-    for (var x = 0; x < 10; x++) {
-      var z = foo();
-      console.log(z);
-      console.log(z);
-    }
-    a();
-    b = 1;
-  `,
-    `
-    x(), y();
-
-    for (var x = 0; x < 10; x++) {
-      var z = foo();
-      console.log(z), console.log(z);
-    }
-    a(), b = 1;
-  `
-  );
-
-  thePlugin(
-    "should turn `if` statements into gaurded expressions",
-    `
-    function foo() {
-      if (x) a();
-    }
-  `,
-    `
-    function foo() {
-      x && a();
-    }
-  `
-  );
-
-  thePlugin(
-    "should turn if statements into a ternary",
-    `
-    function foo() {
-      if (x) a();
-      else b();
-    }
-  `,
-    `
-    function foo() {
-      x ? a() : b();
-    }
-  `
-  );
-
-  thePlugin(
-    "should minify complex `if` statements",
-    `
-    function foo(a) {
-      if (a && a.b != null) {
-        if ((a.c--) === 1) {
-          delete a.c;
-        }
-        return a.b;
-      }
-      return bar(a);
-    }
-
-    function foo2(a) {
-      if (a) {
-        return a.b;
-      } else {
-        return bar(a);
-      }
-    }
-  `,
-    `
-    function foo(a) {
-      return a && a.b != null ? (a.c-- === 1 && delete a.c, a.b) : bar(a);
-    }
-
-    function foo2(a) {
-      return a ? a.b : bar(a);
-    }
-  `
-  );
-
-  thePlugin.skip(
-    "should convert (function () {...})() into !function () {}()",
-    `
-    (function() {
-      x();
-    })();
-    y = function () {
-      x();
-    }();
-  `,
-    `
-    !function () {
-      x();
-    }(), y = function () {
-      x();
-    }();
-  `
-  );
-
-  thePlugin(
-    "should remove the `else` block if there is an early return",
-    `
-    function foo() {
-      if (1) {
-        return 2;
-      } else {
-        lol(1);
-        lol(2);
-      }
-    }
-  `,
-    `
-    function foo() {
-      return 1 ? 2 : void (lol(1), lol(2));
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge expressions into a comma expression in a `return` statement",
-    `
-    function foo() {
-      y();
-      x();
-      return 1;
-    }
-  `,
-    `
-    function foo() {
-      return y(), x(), 1;
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge blocks into a `return` statement with a comma expression",
-    `
-    function foo() {
-      try {
-        x();
-      } catch (e) {
-        1;
-      }
-
-      y();
-      return 1;
-    }
-  `,
-    `
-    function foo() {
-      try {
-        x();
-      } catch (e) {
-        1;
-      }
-
-      return y(), 1;
-    }
-  `
-  );
-
-  // https://github.com/babel/minify/issues/208
-  thePlugin(
-    "should not regresson #208 by handling empty blocks when merging lines into sequences",
-    `
-    !function () {
-      var x;
-      { }
-      alert(x);
-    }()
-  `,
-    `
-    !function () {
-      var x;
-      alert(x);
-    }();
-  `
-  );
-
-  thePlugin(
-    "should merge expressions into the init part of a `for` loop",
-    `
-    function foo() {
-      x();
-      y();
-      for (; i < 10; i++) z();
-    }
-  `,
-    `
-    function foo() {
-      for (x(), y(); i < 10; i++) z();
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge statements into the init part of a `for` loop even when there are other expressions there",
-    `
-    function foo() {
-      x();
-      y();
-      for (z(); i < 10; i++) z();
-    }
-  `,
-    `
-    function foo() {
-      for (x(), y(), z(); i < 10; i++) z();
-    }
-  `
-  );
-
-  thePlugin(
-    "should remove empty `return` statements",
-    `
-     function foo() {
-       lol();
-       return;
-     }
-   `,
-    `
-     function foo() {
-       lol();
-     }
-   `
-  );
-
-  thePlugin(
-    "should merge if statements with following expressions using void",
-    `
-   function foo() {
-     if(window.self != window.top) {
-       if(__DEV__) {
-         console.log('lol', name);
-       }
-       return;
-     }
-     lol();
-   }
- `,
-    `
-   function foo() {
-     return window.self == window.top ? void lol() : void (__DEV__ && console.log('lol', name));
-   }
- `
-  );
-
-  thePlugin(
-    "should not try to merge `if` when there are multiple statements to follow",
-    `
-     function foo() {
-       if(window.self != window.top) {
-         if(__DEV__) {
-           console.log('lol', name);
-         }
-         return;
-       }
-       lol();
-       try { lol() } catch (e) {}
-     }
-   `,
-    `
-     function foo() {
-       if (window.self != window.top) return void (__DEV__ && console.log('lol', name));
-       lol();
-
-       try {
-         lol();
-       } catch (e) {}
-     }
-   `
-  );
-
-  thePlugin(
-    "should handle missing return arg when merging if statements",
-    `
-    function foo() {
-      if (a) {
-        return;
-      }
-
-      return wow;
-    }
-  `,
-    `
-    function foo() {
-      return a ? void 0 : wow;
-    }
-  `
-  );
-
-  thePlugin(
-    "should handle returns with no args",
-    `
-    function foo(a) {
-      if (a && a.b != null) {
-        if ((a.c--) === 1) {
-          return;
-        }
-        return a.b;
-      }
-      return bar(a);
-    }
-  `,
-    `
-    function foo(a) {
-      return a && a.b != null ? a.c-- === 1 ? void 0 : a.b : bar(a);
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert whiles to fors",
-    `
-    function foo(a) {
-      while(true) {
-        bar();
-      }
-    }
-  `,
-    `
-    function foo(a) {
-      for (; true;) bar();
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert whiles to fors and merge vars",
-    `
-    function foo() {
-      let bar = baz;
-      while(true) {
-        bar();
-      }
-    }
-  `,
-    `
-    function foo() {
-      for (let bar = baz; true;) bar();
-    }
-  `
-  );
-
-  // https://github.com/babel/minify/issues/198
-  thePlugin(
-    "should convert while->for and NOT merge let/const if any is refereced outside the loop",
-    `
-    function foo() {
-      let a,
-          { b } = x;
-      while (true) {
-        bar(a, b);
-      }
-      return [a, b];
-    }
-  `,
-    `
-    function foo() {
-      let a,
-          { b } = x;
-
-      for (; true;) bar(a, b);
-
-      return [a, b];
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert while->for and merge var even if any is refereced outside the loop",
-    `
-    function foo() {
-      var a = 1;
-      while (true) {
-        bar(a);
-      }
-      return a;
-    }
-  `,
-    `
-    function foo() {
-      for (var a = 1; true;) bar(a);
-
-      return a;
-    }
-  `
-  );
-
-  thePlugin(
-    "should combine returns",
-    `
-    function foo() {
-      if (a) {
-        if (a.b) {
-          if(a.b.c) {
-            if(a.b.c()){
-              return;
-            }
-          }
-        }
-      }
-      for (; true;) wat();
-    }
-  `,
-    `
-    function foo() {
-      if (!(a && a.b && a.b.c && a.b.c())) for (; true;) wat();
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert early returns to negated if blocks",
-    `
-    function foo(a) {
-      if (lol) return;
-      doThings();
-      doOtherThings();
-    }
-    function bar(a) {
-      if (lol) {
-        return;
-      }
-      try {
-        doThings();
-      } catch (e) {
-        doOtherThings();
-      }
-    }
-    function baz() {
-      while (wow) if (lol) return;
-      boo();
-    }
-  `,
-    `
-    function foo(a) {
-      lol || (doThings(), doOtherThings());
-    }
-    function bar(a) {
-      if (!lol) try {
-          doThings();
-        } catch (e) {
-          doOtherThings();
-        }
-    }
-    function baz() {
-      for (; wow;) if (lol) return;
-
-      boo();
-    }
-  `
-  );
-
-  thePlugin(
-    "should remove early return when no other statements",
-    `
-    function foo() {
-      wow();
-      if (x) {
-        return;
-      }
-    }
-  `,
-    `
-    function foo() {
-      wow();
-      x;
-    }
-  `
-  );
-
-  thePlugin(
-    "earlyReturnTransform: it shouldn't error on shorthand arrow functions",
-    `
-    const f = () => a;
-  `,
-    `
-    const f = () => a;
-  `
-  );
-
-  // TODO merge var z into the init part of for.
-  thePlugin(
-    "should merge function blocks into sequence expressions",
-    `
-    function foo() {
-      a();
-      var x = bar();
-      b(x);
-      this.d = x;
-    }
-    function bar() {
-      x();
-      while (x) {
-        if (x) x();
-      }
-      try { y(); } catch (e) {}
-      var z = x();
-      z();
-      while (a) b();
-      c();
-      z();
-    }
-  `,
-    `
-    function foo() {
-      a();
-
-      var x = bar();
-      b(x), this.d = x;
-    }
-    function bar() {
-      for (x(); x;) x && x();
-
-      try {
-        y();
-      } catch (e) {}
-      var z = x();
-
-      for (z(); a;) b();
-
-      c(), z();
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge function blocks into sequence expressions (part 2)",
-    `
-    function bar() {
-      var z;
-      c();
-      for (z in { a: 1}) x(z);
-      z();
-    }
-  `,
-    `
-    function bar() {
-      var z;
-
-      for (z in c(), { a: 1 }) x(z);
-      z();
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge if statements when there is no alternate",
-    `
-    if (a) {
-      if (b) {
-        throw 'wow';
-      }
-    }
-  `,
-    `
-    if (a && b) throw 'wow';
-  `
-  );
-
-  thePlugin(
-    "should not merge if statements if changes semantics",
-    // FIXME: for some reason, the inner `if` statement gets indented 4 spaces.
-    `
-    function foo() {
-      if (a) {
-          if (b()) return false;
-      } else if (c()) return true;
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge if/return statements",
-    `
-    function foo() {
-      if (a) return b;
-      if (c) return d;
-      return e;
-    }
-  `,
-    `
-    function foo() {
-      return a ? b : c ? d : e;
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge if/return statements 2",
-    `
-    function foo() {
-      if (bar) return;
-      if (far) return;
-      if (faz) return;
-1
-      return e;
-    }
-  `,
-    `
-    function foo() {
-      return bar || far || faz ? void 0 : e;
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge return statements with expression in between",
-    `
-    function foo() {
-      if (a) return b;
-      c = d;
-      return z;
-    }
-  `,
-    `
-    function foo() {
-      return a ? b : (c = d, z);
-    }
-  `
-  );
-
-  thePlugin(
-    "should hoist functions",
-    `
-    function foo() {
-      a();
-      function bar() {}
-      b();
-    }
-  `,
-    `
-    function foo() {
-      function bar() {}
-      a(), b();
-    }
-  `
-  );
-
-  thePlugin(
-    "should not return inside a loop",
-    `
-    function foo() {
-      while(1) {
-        if (a === null) {
-          b();
-          return;
-        }
-        a();
-        b();
-      }
-    }
-  `,
-    `
-    function foo() {
-      for (; 1;) {
-        if (a === null) return void b();
-        a(), b();
-      }
-    }
-  `
-  );
-
-  thePlugin(
-    "should make if with one return into a conditional",
-    `
-    function foo() {
-      if (b) {
-        return foo;
-      } else {
-        a();
-        b();
-      }
-    }
-  `,
-    `
-    function foo() {
-      return b ? foo : void (a(), b());
-    }
-  `
-  );
-
-  thePlugin(
-    "should make if with one return into a conditional 2",
-    `
-    function foo() {
-      if (b) {
-        foo();
-      } else {
-        return bar;
-      }
-    }
-  `,
-    `
-    function foo() {
-      return b ? void foo() : bar;
-    }
-  `
-  );
-
-  thePlugin(
-    "should make if with one return into a conditional 3",
-    `
-    function foo() {
-      if (b) {
-        foo();
-      } else {
-        return;
-      }
-    }
-  `,
-    `
-    function foo() {
-      b && foo();
-    }
-  `
-  );
-
-  thePlugin(
-    "should make if with one return into a conditional 4",
-    `
-    function foo() {
-      if (b) {
-        return;
-      } else {
-        foo();
-      }
-    }
-  `,
-    `
-    function foo() {
-      b || foo();
-    }
-  `
-  );
-
-  thePlugin(
-    "should not merge if",
-    `
-    if (x) {
-      try {
-        foo();
-      } catch (e) {}
-    } else if (y) {
-      if (a) {
-        bar();
-      } else if (b) {
-        baz();
-      } else {
-        for (;;) 1;
-      }
-    }
- `,
-    `
-    if (x) try {
-        foo();
-      } catch (e) {} else if (y) if (a) bar();else if (b) baz();else for (;;) 1;
-  `
-  );
-
-  it("should merge expressions into if statements test");
-  it("should understand continue statements");
-
-  thePlugin(
-    "should handle do while statements",
-    `
-    do {
-      foo();
-    } while (1);
- `,
-    `
-    do foo(); while (1);
-  `
-  );
-
-  thePlugin(
-    "should handle multiple interplays of if statements and returns",
-    `
-    function lawl() {
-      var a = 1;
-      if (b) {
-        return c;
-      }
-
-      if (a) {
-        bar();
-        return;
-      }
-
-      if (d) {
-        if (g) {
-          this['s'] = morebutts;
-          return wat;
-        }
-        return boo;
-      }
-
-      haha();
-      return butts;
-    }
- `,
-    `
-    function lawl() {
-      var a = 1;
-      return b ? c : a ? void bar() : d ? g ? (this['s'] = morebutts, wat) : boo : (haha(), butts);
-    }
-  `
-  );
-
-  thePlugin(
-    "should handle empty blocks in if statements",
-    `
-    if (a) {
-    } else {
-      foo();
-    }
-
-    if (a) {
-      foo();
-    } else if (b) {
-    }
-
-    if (a) {
-    } else {
-    }
-  `,
-    `
-    a || foo(), a ? foo() : b, a;
-  `
-  );
-
-  thePlugin(
-    "re-arrange conditionals for assignment",
-    `
-    var x;
-    if (a) {
-      x = foo;
-    } else if (b) {
-      x = bar;
-    } else {
-      x = baz;
-    }
-  `,
-    `
-    var x;
-    x = a ? foo : b ? bar : baz;
-  `
-  );
-
-  thePlugin(
-    "should bail on re-arranging conditionals for assignment",
-    `
-    var x;
-    if (a) {
-      x = foo;
-    } else if (b) {
-      x = bar;
-    } else {
-      y = baz;
-    }
-  `,
-    `
-    var x;
-    a ? x = foo : b ? x = bar : y = baz;
-  `
-  );
-
-  thePlugin(
-    "should bail on re-arranging conditionals for assignment",
-    `
-    var x;
-    if (a) {
-      x = foo;
-    } else if (b) {
-      x = bar;
-    } else {
-      baz();
-    }
-  `,
-    `
-    var x;
-    a ? x = foo : b ? x = bar : baz();
-  `
-  );
-
-  thePlugin(
-    "re-arranging conditionals for assignment member exprs",
-    `
-    if (a) {
-      x.b = foo;
-    } else if (b) {
-      x.b = bar;
-    } else {
-      x.b = baz;
-    }
-  `,
-    `
-    x.b = a ? foo : b ? bar : baz;
-  `
-  );
-
-  thePlugin(
-    "re-arranging conditionals for assignment with operators",
-    `
-    if (a) {
-      x.b += foo;
-    } else if (b) {
-      x.b += bar;
-    } else {
-      x.b += baz;
-    }
-  `,
-    `
-    x.b += a ? foo : b ? bar : baz;
-  `
-  );
-
-  thePlugin(
-    "should bail on different operators",
-    `
-    if (a) {
-      x.b += foo;
-    } else if (b) {
-      x.b -= bar;
-    } else {
-      x.b += baz;
-    }
-  `,
-    `
-    a ? x.b += foo : b ? x.b -= bar : x.b += baz;
-  `
-  );
-
-  thePlugin(
-    "should bail on different member exprs",
-    `
-    if (a) {
-      this.a = 1;
-    } else {
-      this.b = 2;
-    }
-  `,
-    `
-    a ? this.a = 1 : this.b = 2;
-  `
-  );
-
-  thePlugin(
-    "should turn continue into negated if",
-    `
-    for (var p in foo) {
-      if (p) continue;
-      bar();
-    }
-  `,
-    `
-    for (var p in foo) p || bar();
-  `
-  );
-
-  thePlugin(
-    "should flip logical expressions",
-    `
-    !x && foo();
-    if (!(null == r)) for (;;);
-  `,
-    `
-    if (!x && foo(), null != r) for (;;);
-  `
-  );
-
-  thePlugin(
-    "should flip logical expressions 2",
-    `
-    if (!(1 !== foo || !bar)) for (;;);
-  `,
-    `
-    if (1 === foo && bar) for (;;);
-  `
-  );
-
-  thePlugin(
-    "should combine to a single return statement",
-    `
-    function foo() {
-      if (foo) {
-        bar(foo);
-        return foo;
-      } else if (baz) {
-        bar(baz);
-        return baz;
-      } else if (wat) {
-        bar(wat);
-        return wat;
-      }
-    }
-  `,
-    `
-    function foo() {
-      return foo ? (bar(foo), foo) : baz ? (bar(baz), baz) : wat ? (bar(wat), wat) : void 0;
-    }
-  `
-  );
-
-  thePlugin(
-    "should inline break condition in for test",
-    `
-    for (i = 1; i <= j; i++) {
-      if (bar) break;
-    }
-  `,
-    `
-    for (i = 1; i <= j && !bar; i++);
-  `
-  );
-
-  thePlugin(
-    "should inline break condition in for test 2",
-    `
-    for (i = 1; i <= j; i++) {
-      foo();
-      if (bar) break;
-    }
-  `,
-    `
-    for (i = 1; i <= j && (foo(), !bar); i++);
-  `
-  );
-
-  thePlugin(
-    "should inline break condition in for test 3",
-    `
-    for (i = 1; i <= j; i++) {
-      if (bar) {
-        break;
-      } else {
-        wat();
-        if (x) throw 1
-      }
-    }
-  `,
-    `
-    for (i = 1; i <= j && !bar; i++) if (wat(), x) throw 1;
-  `
-  );
-
-  // TODO: see `!!` below.
-  thePlugin(
-    "should inline break condition in for test 4",
-    `
-    for (i = 1; i <= j; i++) {
-      if (bar) {
-        wat();
-        if (x) throw 1;
-      } else {
-        break;
-      }
-    }
-  `,
-    `
-    for (i = 1; i <= j && !!bar; i++) if (wat(), x) throw 1;
-  `
-  );
-
-  // TODO: only apply ! unary to last in seq expr
-  thePlugin(
-    "should inline break condition in for test 5",
-    `
-    for (i = 1; i <= j; i++) {
-      foo();
-      if (bar) {
-        break;
-      } else {
-        wat();
-        if (x) throw 1
-      }
-      hi();
-    }
-  `,
-    `
-    for (i = 1; i <= j && (foo(), !bar); i++) {
-      if (wat(), x) throw 1;
-      hi();
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge conditional returns into test",
-    `
-    function foo() {
-      if (x) {
-        delete x.x;
-        if (bar()) return;
-      }
-
-      if (bar) {
-        x();
-      } else {
-        y();
-      }
-    }
-  `,
-    `
-    function foo() {
-      x && (delete x.x, bar()) || (bar ? x() : y());
-    }
-  `
-  );
-
-  thePlugin(
-    "should bail on mrege conditional return into test",
-    `
-    function foo() {
-      if (x) {
-        delete x.x;
-        if (bar()) return 2;
-      }
-
-      if (bar) {
-        x();
-      } else {
-        y();
-      }
-    }
-  `,
-    `
-    function foo() {
-      return x && (delete x.x, bar()) ? 2 : void (bar ? x() : y());
-    }
-  `
-  );
-
-  thePlugin(
-    "should merge conditional return into test 2",
-    `
-    function foo() {
-      if (x) {
-        delete x.x;
-        if (bar()) return;
-      }
-    }
-  `,
-    `
-    function foo() {
-      x && (delete x.x, bar());
-    }
-  `
-  );
-
-  thePlugin(
-    "should handle return argument",
-    `
-    function foo() {
-      if (x) {
-        delete x.x;
-        if (bar()) return x;
-      }
-    }
-  `,
-    `
-    function foo() {
-      if (x && (delete x.x, bar())) return x;
-    }
-  `
-  );
-
-  thePlugin(
-    "should bail on conditional return into test",
-    `
-    function foo() {
-      if (x) {
-        var f = wow;
-        delete x.x;
-        if (bar()) return;
-      }
-    }
-  `,
-    `
-    function foo() {
-      if (x) {
-        var f = wow;
-
-        if (delete x.x, bar()) return;
-      }
-    }
-  `
-  );
-
-  thePlugin(
-    "should recombine after continue merging",
-    `
-    for (;;) {
-      a = b;
-      if (!foo) continue;
-      bar = foo;
-    }
-  `,
-    `
-    for (;;) a = b, foo && (bar = foo);
-  `
-  );
-
-  thePlugin(
-    "should not assume undefined",
-    `
-    function foo() {
-      if (foo) {
-        if (bar) {
-          return false;
-        }
-        if (baz) {
-          return false;
-        }
-      }
-      return true;
-    }
-  `,
-    `
-    function foo() {
-      if (foo) {
-        if (bar) return false;
-        if (baz) return false;
-      }
-      return true;
-    }
-  `
-  );
-
-  thePlugin(
-    "should keep directives",
-    `
-    function a() {
-      'use strict';
-      foo();
-    }
-  `,
-    `
-    function a() {
-      'use strict';
-
-      foo();
-    }
-  `
-  );
-
-  thePlugin(
-    "should handle continue in nested if",
-    `
-    function wow() {
-      for(;;) {
-        if (foo) {
-          if (bar) {
-            continue;
-          }
-        }
-        wat();
-      }
-    }
-  `,
-    `
-    function wow() {
-      for (;;) foo && bar || wat();
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert gaurded nots to ors",
-    `
-    x();
-    if (!foo.bar) foo.bar = wat;
-  `,
-    `
-    x(), !foo.bar && (foo.bar = wat);
-  `
-  );
-
-  thePlugin(
-    "should convert gaurded nots to ors",
-    `
-    if (!foo && foo !== bar) {
-      wow();
-      such();
-    }
-  `,
-    `
-    !foo && foo !== bar && (wow(), such());
-  `
-  );
-
-  thePlugin(
-    "should put the empty vars first",
-    `
-    var x = 1, y, z = 2, zx, a;
-  `,
-    `
-    var y,
-        zx,
-        a,
-        x = 1,
-        z = 2;
-  `
-  );
-
-  thePlugin(
-    "function expression in sequennce doesnt need parens",
-    `
-    x, (function() {})();
-  `,
-    `
-    x, function () {}();
-  `
-  );
-
-  thePlugin(
-    "should turn early return else block into statement",
-    `
-    function x() {
-      for (;;) {
-        x();
-        if (foo) return 1;
-        else y();
-      }
-    }
-  `,
-    `
-    function x() {
-      for (;;) {
-        if (x(), foo) return 1;
-        y();
-      }
-    }
-  `
-  );
-
-  thePlugin(
-    "should remove block",
-    `
-    function x() {
-      if (a) {
-        if (b) {
-          for(;;) {
-            if (a) b();
-          }
-        }
-      } else {
-        wat();
-      }
-    }
-  `,
-    `
-    function x() {
-      if (!a) wat();else if (b) for (;;) a && b();
-    }
-  `
-  );
-
-  // TODO
-  thePlugin(
-    "should merge things into throw statement seq expr",
-    `
-    function x() {
-      z();
-      throw y;
-    }
-  `,
-    `
-    function x() {
-      throw z(), y;
-    }
-  `
-  );
-
-  // TODO:
-  // Fix indenting
-  thePlugin(
-    "should negate early return if",
-    `
-    function x() {
-      if (!bar) return;
-      var x = foo;
-      if (!foo) return
-      if (y)
-        throw y;
-    }
-  `,
-    `
-    function x() {
-      if (bar) {
-          var x = foo;
-          if (foo && y) throw y;
-        }
-    }
-  `
-  );
-
-  thePlugin(
-    "should not negate early return if",
-    `
-    function x() {
-      var x = foo;
-      if (hi) {
-        var y = z;
-        if (!foo) return;
-        if (x) throw y;
-      }
-      x();
-    }
-  `,
-    `
-    function x() {
-      var x = foo;
-      if (hi) {
-        var y = z;
-        if (!foo) return;
-        if (x) throw y;
-      }
-      x();
-    }
-  `
-  );
-
-  thePlugin(
-    "switch if to avoid blocking",
-    `
-    function x() {
-      if (a) {
-        if (b) for (;;) wow();
-      } else c();
-    }
-  `,
-    `
-    function x() {
-      if (!a) c();else if (b) for (;;) wow();
-    }
-  `
-  );
-
-  thePlugin(
-    "should remove last break statement in switch",
-    `
-    switch (foo) {
-      case 'foo':
-        throw bar();
-        break;
-      case 'bar':
-        wow();
-        break;
-    }
-  `,
-    `
-    switch (foo) {
-      case 'foo':
-        throw bar();
-        break;
-      case 'bar':
-        wow();
-
-    }
-  `
-  );
-
-  thePlugin(
-    "should not remove last break statement if it contains a label",
-    `
-    loop: while (foo) {
-      switch (bar) {
-        case 47:
-          break;
-      }
-      switch (baz) {
-        default:
-          break loop;
-      }
-    }
-  `,
-    `
-    loop: for (; foo;) {
-      switch (bar) {
-        case 47:
-      }
-      switch (baz) {
-        default:
-          break loop;
-      }
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert consequents in switch into sequence expressions",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          bar();
-          foo();
-          break;
-        case 'bar':
-          wow();
-          return wo;
-          break;
-      }
-    }
-  `,
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          bar(), foo();
-
-          break;
-        case 'bar':
-          return wow(), wo;
-
-      }
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert switch statements to returns",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          return 1;
-        case foo.bar:
-          return 2;
-        case wow:
-          wow();
-          return 3;
-        default:
-          return 0;
-      }
-    }
-  `,
-    `
-    function bar() {
-      return foo === 'foo' ? 1 : foo === foo.bar ? 2 : foo === wow ? (wow(), 3) : 0;
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert switch statements with next return as default to returns",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          return 1;
-        case foo.bar:
-          return 2;
-        case wow:
-          wow();
-          return 3;
-      }
-      return 0;
-    }
-  `,
-    `
-    function bar() {
-      return foo === 'foo' ? 1 : foo === foo.bar ? 2 : foo === wow ? (wow(), 3) : 0;
-    }
-  `
-  );
-
-  thePlugin(
-    "if last statement in function should consider the default return a void",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          return 1;
-        case foo.bar:
-          return 2;
-        case wow:
-          wow();
-          return 3;
-      }
-    }
-  `,
-    `
-    function bar() {
-      return foo === 'foo' ? 1 : foo === foo.bar ? 2 : foo === wow ? (wow(), 3) : void 0;
-    }
-  `
-  );
-
-  /* eslint-disable max-len */
-  thePlugin(
-    "should convert switch statements w/ fallthrough to return",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          return 1;
-        case foo.bar:
-        case wow:
-          wow();
-          return 3;
-        case boo:
-          return 4;
-        case baz:
-        case wat:
-          return 5;
-        default:
-          return 0;
-      }
-    }
-  `,
-    `
-    function bar() {
-      return foo === 'foo' ? 1 : foo === foo.bar || foo === wow ? (wow(), 3) : foo === boo ? 4 : foo === baz || foo === wat ? 5 : 0;
-    }
-  `
-  );
-  /* eslint-enable max-len */
-
-  thePlugin(
-    "should convert non-return switch to conditionals",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          foo();
-          break;
-        case foo.bar:
-          wow();
-          wat();
-          break;
-        case shh:
-        case wow:
-          baa();
-          break;
-        default:
-          meh();
-      }
-    }
-  `,
-    `
-    function bar() {
-      foo === 'foo' ? foo() : foo === foo.bar ? (wow(), wat()) : foo === shh || foo === wow ? baa() : meh();
-    }
-  `
-  );
-
-  thePlugin(
-    "should put sequence in switch test",
-    `
-    function bar() {
-      wow();
-      switch (foo) {
-        case 'foo':
-          throw x();
-          break;
-      }
-    }
-  `,
-    `
-    function bar() {
-      switch (wow(), foo) {
-        case 'foo':
-          throw x();
-
-      }
-    }
-  `
-  );
-
-  thePlugin(
-    "should put sequence in if test",
-    `
-    function bar() {
-      wow();
-      if (foo) {
-        throw x();
-      }
-    }
-  `,
-    `
-    function bar() {
-      if (wow(), foo) throw x();
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert non-return switch to conditionals",
-    `
-    function bar() {
-      switch (foo) {
-        case 'foo':
-          foo();
-          break;
-        case foo.bar:
-          wow();
-          wat();
-          break;
-        case shh:
-        case wow:
-          baa();
-          break;
-        default:
-          meh();
-      }
-    }
-  `,
-    `
-    function bar() {
-      foo === 'foo' ? foo() : foo === foo.bar ? (wow(), wat()) : foo === shh || foo === wow ? baa() : meh();
-    }
-  `
-  );
-
-  thePlugin(
-    "should not change type",
-    `
-    function x(a) {
-      return !!a;
-    }
-  `
-  );
-
-  thePlugin(
-    "should not change type",
-    `
-    function x(a, b) {
-      a = a || b;
-      return b === a || !a;
-    }
-  `,
-    `
-    function x(a, b) {
-      return a = a || b, b === a || !a;
-    }
-  `
-  );
-
-  thePlugin(
-    "should apply unary to only the last element of a sequence expr",
-    `
-    !(a, b, c);
-  `,
-    `
-    a, b, !c;
-  `
-  );
-
-  thePlugin(
-    "should apply unary to both sides of the conditional",
-    `
-    !(a ? b : c);
-  `,
-    `
-    a ? !b : !c;
-  `
-  );
-
-  thePlugin(
-    "should flip alt and cons if condition is unary",
-    `
-    !(!a && b) ? b : c
-  `,
-    `
-    !a && b ? c : b;
-  `
-  );
-
-  thePlugin(
-    "should merge previous expressions in the for loop right",
-    `
-    function foo() {
-      x = 1;
-      a();
-      for (var a in b) wow();
-    }
-  `,
-    `
-    function foo() {
-      for (var a in x = 1, a(), b) wow();
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert empty blocks to empty statements",
+    "should fix issue#323 with != and !==",
     `
     function foo() {
-      for (i in p) {}
-      for (; ;) {}
-      switch(1) {}
-      try { a } catch(e) {}
+      var x, y;
+      y = o[x];
+      foo(y !== undefined);
     }
   `,
     `
     function foo() {
-      for (i in p);
-      for (;;);
-      switch (1) {}
-      try {
-        a;
-      } catch (e) {}
+      var x, y;
+      y = o[x], foo(y !== undefined);
     }
-  `
-  );
-
-  thePlugin(
-    "should flip binary expressions",
-    `
-    if (!(!a && b == a && !b && b < a)) for(;;) a();
-  `,
-    `
-    if (a || b != a || b || !(b < a)) for (;;) a();
-  `
-  );
-
-  // From UglifyJS
-  thePlugin(
-    "should simplify common conditional expression patterns",
-    `
-    function f1() { return a == b ? true : x; }
-    function f2() { return a == b ? false : x; }
-    function f3() { return a < b ? !0 : x; }
-    function f4() { return a < b ? !1 : x; }
-    function f5() { return c ? !0 : x; }
-    function f6() { return c ? false : x; }
-    function f7() { return !c ? true : x; }
-    function f8() { return !c ? !1 : x; }
-    function g1() { return a == b ? x : true; }
-    function g2() { return a == b ? x : false; }
-    function g3() { return a < b ? x : !0; }
-    function g4() { return a < b ? x : !1; }
-    function g5() { return c ? x : true; }
-    function g6() { return c ? x : !1; }
-    function g7() { return !c ? x : !0; }
-    function g8() { return !c ? x : false; }
   `,
-    `
-    function f1() {
-      return !(a != b) || x;
-    }
-    function f2() {
-      return a != b && x;
-    }
-    function f3() {
-      return !!(a < b) || x;
-    }
-    function f4() {
-      return !(a < b) && x;
-    }
-    function f5() {
-      return !!c || x;
-    }
-    function f6() {
-      return !c && x;
-    }
-    function f7() {
-      return !c || x;
-    }
-    function f8() {
-      return !!c && x;
-    }
-    function g1() {
-      return a != b || x;
-    }
-    function g2() {
-      return !(a != b) && x;
-    }
-    function g3() {
-      return !(a < b) || x;
-    }
-    function g4() {
-      return !!(a < b) && x;
-    }
-    function g5() {
-      return !c || x;
-    }
-    function g6() {
-      return !!c && x;
-    }
-    function g7() {
-      return !!c || x;
-    }
-    function g8() {
-      return !c && x;
+    {
+      plugins: [plugin, comparisonPlugin]
     }
-  `
-  );
-
-  thePlugin(
-    "should simplify common conditional operations 2",
-    `
-      function h1() { return a && b ? (foo(), true) : false }
-    `,
-    `
-      function h1() {
-        return !!(a && b) && (foo(), true);
-      }
-    `
-  );
-
-  thePlugin(
-    "should fix issue#689",
-    `
-      function foo(object, property, value) {
-        if (object && property) {
-          object[property] = value;
-          return true;
-        }
-        return false;
-      }
-    `,
-    `
-      function foo(object, property, value) {
-        return !!(object && property) && (object[property] = value, true);
-      }
-    `
   );
 
   // From UglifyJS
@@ -2146,35 +205,6 @@ describe("simplify-plugin", () => {
   `
   );
 
-  // https://github.com/babel/minify/issues/115
-  thePlugin(
-    "should transform impure conditional statements correctly - issue#115",
-    `
-    (function () {
-      a = x ? true : false;
-      c = 1 ? (this.get(x), a = b, true) : (foo.bar, false);
-    })();
-  `,
-    `
-    (function () {
-      a = !!x, c = 1 ? (this.get(x), a = b, true) : (foo.bar, false);
-    })();
-  `
-  );
-
-  thePlugin(
-    "should require block for single block scoped declaration in if/else",
-    `
-    if (false) {
-      let { a } = foo();
-    } else if (true) {
-      const x = bar();
-    } else {
-      function baz() {}
-    }
-  `
-  );
-
   thePlugin.inEachLine(
     "should simplify assignments",
     `
@@ -2337,254 +367,4 @@ describe("simplify-plugin", () => {
     foo.bar = foo.bar || {};
   `
   );
-
-  thePlugin(
-    "should simplify assignments w. super",
-    `
-    class Foo {
-      foo() {
-        super.foo = super.foo + 1;
-      }
-    };
-  `,
-    `
-    class Foo {
-      foo() {
-        ++super.foo;
-      }
-    };
-  `
-  );
-
-  thePlugin(
-    "should not simplify assignments w. template literals",
-    `
-    foo[\`x\`] = foo[\`x\`] + 1;
-  `
-  );
-
-  // TODO:
-  // Fix indenting
-  thePlugin(
-    "should consider hoisted definitions in if_return",
-    `
-    function foo() {
-      bar();
-      if(x) return;
-      const {a}=b;
-      function bar () {
-        baz();
-        bar();
-      }
-    }
-  `,
-    `
-    function foo() {
-      function bar() {
-        baz(), bar();
-      }
-
-      if (bar(), !x) {
-          const { a } = b;
-        }
-    }
-  `
-  );
-
-  thePlugin(
-    "should optimize if..else..returns",
-    `
-    function foo() {
-      if (a) {
-        if (x) return;
-        else return x;
-      }
-      const b = 1;
-      return "doesn't matter if this is reached or not";
-    }
-  `,
-    `
-    function foo() {
-      if (a) return x ? void 0 : x;
-      const b = 1;
-      return "doesn't matter if this is reached or not";
-    }
-  `
-  );
-
-  thePlugin(
-    "should fix issue#281 with if..return",
-    `
-    function foo() {
-      if (x)
-        return;
-      function bar() {}
-      bar(a);
-    }
-  `,
-    `
-    function foo() {
-      function bar() {}
-      x || bar(a);
-    }
-  `
-  );
-
-  thePlugin(
-    "should fix issue#323 with != and !==",
-    `
-    function foo() {
-      var x, y;
-      y = o[x];
-      foo(y !== undefined);
-    }
-  `,
-    `
-    function foo() {
-      var x, y;
-      y = o[x], foo(y !== undefined);
-    }
-  `,
-    {
-      plugins: [plugin, comparisonPlugin]
-    }
-  );
-
-  thePlugin(
-    "should fix issue#423 with fallthrough in default case",
-    `
-    function foo(bar) {
-      switch (bar) {
-        case 'a':
-          return 1;
-        case 'b':
-        default:
-          return 4;
-        case 'c':
-          return 3;
-      }
-    }
-  `,
-    `
-    function foo(bar) {
-      return bar === 'a' ? 1 : bar === 'c' ? 3 : 4;
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert multiple fallthrough in switch to conditional expression",
-    `
-    function foo(bar) {
-      switch (bar) {
-        case 'a':
-        case 'b':
-          return 1;
-        case 'd':
-        default:
-          return 4;
-        case 'c':
-          return 3;
-      }
-    }
-  `,
-    `
-    function foo(bar) {
-      return bar === 'a' || bar === 'b' ? 1 : bar === 'c' ? 3 : 4;
-    }
-  `
-  );
-
-  thePlugin(
-    "should fix#455 and deopt when scope tree is not updated",
-    `
-    function foo(param) {
-      if (param === null) return;
-      let thingA = param.a;
-      let thingB = param.b;
-      if (!thingA && !thingB) return;
-      let thingC = param.c;
-    }
-  `,
-    `
-    function foo(param) {
-      if (param !== null) {
-          let thingA = param.a;
-          let thingB = param.b;
-          if (thingA || thingB) {
-              let thingC = param.c;
-            }
-        }
-    }
-  `
-  );
-
-  thePlugin(
-    "should convert simple arrow block to expression",
-    `
-    const a = () => {return (3, 4);};
-    const b = () => {return 3;};
-  `,
-    `
-    const a = () => (3, 4);
-    const b = () => 3;
-  `
-  );
-
-  thePlugin(
-    "should NOT convert empty arrow block to expression",
-    `
-    const a = () => {};
-    const b = () => {return;};
-  `,
-    `
-    const a = () => {};
-    const b = () => {};
-  `
-  );
-
-  thePlugin(
-    "should NOT remove block for early continue transforms - fix issue#560",
-    `
-      function foo() {
-        while (true) {
-          const {x} = a;
-          const {y} = b;
-        }
-      }
-    `,
-    `
-      function foo() {
-        for (; true;) {
-          const { x } = a;
-          const { y } = b;
-        }
-      }
-    `
-  );
-
-  // TODO: issue-637
-  thePlugin(
-    "should NOT remove else block when ",
-    `
-      function test(a) {
-        const clash = () => {};
-        if (a) {
-          return clash();
-        } else {
-          const clash = () => {};
-          return clash();
-        }
-      }
-    `,
-    `
-      function test(a) {
-        const clash = () => {};
-        if (a) return clash();else {
-          const clash = () => {};
-          return clash();
-        }
-      }
-    `
-  );
 });