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Fix incorrect value of _cache in _wrapNativeSuper #7570

Merged
merged 1 commit into from
Mar 14, 2018
Merged

Fix incorrect value of _cache in _wrapNativeSuper #7570

merged 1 commit into from
Mar 14, 2018

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simonkberg
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Q                       A
Fixed Issues?
Patch: Bug Fix? Yes
Major: Breaking Change?
Minor: New Feature?
Tests Added + Pass? Yes
Documentation PR
Any Dependency Changes?
License MIT

I noticed this when inspecting the build output of a project. The fix is small, so I'm submitting it as a PR directly instead of opening an issue. Hope that's alright.

The boolean expression in the definition of the _cache variable in the _wrapNativeSuper helper returns false in environments where Map is missing. This would make the later typeof check pass, since it only checks if the type is actually undefined.

This change explicitly sets _cache to undefined if Map is missing, to ensure the cache methods will be ignored.

The boolean expressions returns false in environments where Map is missing.
This change explicitly sets _cache to undefined in such cases, to ensure the cache methods will be ignored.
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Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/7249/

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Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/7249/

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Good catch!

@existentialism existentialism added the PR: Bug Fix 🐛 A type of pull request used for our changelog categories label Mar 14, 2018
@hzoo hzoo merged commit 07ab02f into babel:master Mar 14, 2018
@simonkberg simonkberg deleted the fix/babel-helpers/wrap-native-super-cache-type branch March 14, 2018 20:41
aminmarashi pushed a commit to aminmarashi/babel that referenced this pull request Mar 17, 2018
The boolean expressions returns false in environments where Map is missing.
This change explicitly sets _cache to undefined in such cases, to ensure the cache methods will be ignored.
mAAdhaTTah added a commit to valtech-nyc/babel that referenced this pull request Mar 18, 2018
* master: (131 commits)
  v7.0.0-beta.42
  Use strict namespace behavior for mjs files. (babel#7545)
  Remove outdated spec deviation note [skip ci] (babel#7571)
  Ensure that the backward-compat logic for plugin-utils copies over the version API properly. (babel#7580)
  Rename actual/expected test files to input/output (babel#7578)
  Use helper-module-import inside entry plugin too
  Use helper-module-imports instead of custom import (babel#7457)
  Fix "Module build failed: Error: Cannot find module '@babel/types'" (babel#7575)
  Wrap wrapNativeSuper helpers in redefining functions for better tree-shakeability (babel#7188)
  Favour extends helper over objectWithoutProperties when whole object gets copied anyway (babel#7390)
  Fix incorrect value of _cache in _wrapNativeSuper (babel#7570)
  [transform-classes] Fix typo in _wrapNativeSuper helper
  [typeof-symbol] Guard against undefined built-in globals
  update to beta.41 (babel#7568)
  v7.0.0-beta.41
  Fix import of type ConfigItem (babel#7561)
  Run node 9 on circleci and remove from travis (babel#7560)
  docs: [skip ci] fix proposal link text
  update preset-env after build-data (babel#7543)
  Re-add TEST_ONLY and use Jest's -t for TEST_GREP. (babel#7556)
  ...
mAAdhaTTah added a commit to valtech-nyc/babel that referenced this pull request Mar 18, 2018
…ature/pipe-await

* 'master' of https://github.com/valtech-nyc/babel: (131 commits)
  v7.0.0-beta.42
  Use strict namespace behavior for mjs files. (babel#7545)
  Remove outdated spec deviation note [skip ci] (babel#7571)
  Ensure that the backward-compat logic for plugin-utils copies over the version API properly. (babel#7580)
  Rename actual/expected test files to input/output (babel#7578)
  Use helper-module-import inside entry plugin too
  Use helper-module-imports instead of custom import (babel#7457)
  Fix "Module build failed: Error: Cannot find module '@babel/types'" (babel#7575)
  Wrap wrapNativeSuper helpers in redefining functions for better tree-shakeability (babel#7188)
  Favour extends helper over objectWithoutProperties when whole object gets copied anyway (babel#7390)
  Fix incorrect value of _cache in _wrapNativeSuper (babel#7570)
  [transform-classes] Fix typo in _wrapNativeSuper helper
  [typeof-symbol] Guard against undefined built-in globals
  update to beta.41 (babel#7568)
  v7.0.0-beta.41
  Fix import of type ConfigItem (babel#7561)
  Run node 9 on circleci and remove from travis (babel#7560)
  docs: [skip ci] fix proposal link text
  update preset-env after build-data (babel#7543)
  Re-add TEST_ONLY and use Jest's -t for TEST_GREP. (babel#7556)
  ...
mAAdhaTTah added a commit to valtech-nyc/babel that referenced this pull request Mar 21, 2018
* master: (140 commits)
  Update to beta.42 (babel#7609)
  Disable flow on transformClass, fix preset-env errors (babel#7605)
  Logical Assignment: ensure computed key isn't recomputed (babel#7604)
  Remove obsolete max-len eslint rule and reformat some stuff to fit (babel#7602)
  Centralize Babel's own compilation config to make it easier to follow. (babel#7599)
  Run prettier to format all JSON.
  Tweak es2015-related plugin order in preset-env (babel#7586)
  Refactored quirky inheritance in babel-plugin-transform-classes (babel#7444)
  Add RegExp support to include/exclude preset-env options (babel#7242)
  v7.0.0-beta.42
  Use strict namespace behavior for mjs files. (babel#7545)
  Remove outdated spec deviation note [skip ci] (babel#7571)
  Ensure that the backward-compat logic for plugin-utils copies over the version API properly. (babel#7580)
  Rename actual/expected test files to input/output (babel#7578)
  Use helper-module-import inside entry plugin too
  Use helper-module-imports instead of custom import (babel#7457)
  Fix "Module build failed: Error: Cannot find module '@babel/types'" (babel#7575)
  Wrap wrapNativeSuper helpers in redefining functions for better tree-shakeability (babel#7188)
  Favour extends helper over objectWithoutProperties when whole object gets copied anyway (babel#7390)
  Fix incorrect value of _cache in _wrapNativeSuper (babel#7570)
  ...
@lock lock bot added the outdated A closed issue/PR that is archived due to age. Recommended to make a new issue label Oct 5, 2019
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5 participants