feat(es/minifier): Handle array literals in sequences

[kdy1]

Description:

swc_ecma_minifier:

• sequences: Implement more rule for array literals.

Related issue (if exists):

Bugs

Bug 1 (fixed)

   INFO [SWC_RUN]
var a = {};
(function(global) {
    function fail(o) {
        var result = {};
        function inner() {
            return outer({
                one: o.one,
                two: o.two
            });
        }
        result.inner = function() {
            return inner();
        };
        return result;
    }
    function outer(o) {
        var ret;
        if (o) {
            ret = o.one;
        } else {
            ret = o.two;
        }
        return ret;
    }
    global.fail = fail;
})(a);
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

PASS

    at crates/swc_ecma_minifier/src/debug.rs:120
    in compress ast
    in minify

   INFO Done in 255.375µs, kind: "perf"
    at crates/swc_timer/src/lib.rs:32
    in analyze
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG ===== Start =====
var a = {};
(function(global) {
    function fail(o) {
        var result = {};
        function inner() {
            return outer({
                one: o.one,
                two: o.two
            });
        }
        result.inner = function() {
            return inner();
        };
        return result;
    }
    function outer(o) {
        var ret;
        if (o) {
            ret = o.one;
        } else {
            ret = o.two;
        }
        return ret;
    }
    global.fail = fail;
})(a);
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

    at crates/swc_ecma_minifier/src/compress/mod.rs:275
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO compress: Running expression simplifier (pass = 0)
    at crates/swc_ecma_minifier/src/compress/mod.rs:282
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO compress: expr_simplifier took 155.683µs (pass = 0)
    at crates/swc_ecma_minifier/src/compress/mod.rs:304
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO compress/pure: Running pure optimizer (pass = 0)
    at crates/swc_ecma_minifier/src/compress/mod.rs:325
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO compress/pure: Pure optimizer took 419.355µs (pass = 0)
    at crates/swc_ecma_minifier/src/compress/mod.rs:339
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO compress: Running optimizer (pass = 0)
    at crates/swc_ecma_minifier/src/compress/mod.rs:355
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG inline: Decided to inline function `inner#3` as it's used only once
    at crates/swc_ecma_minifier/src/compress/optimize/inline.rs:529
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG inline: Replacing 'inner#3' with an expression
    at crates/swc_ecma_minifier/src/compress/optimize/inline.rs:618
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG inline: Inlining an iife
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:600
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG inline: Inlining a function call
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:500
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG sequences: Compressing statements as a sequences
    at crates/swc_ecma_minifier/src/compress/optimize/sequences.rs:136
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG inline: Decided to inline function `fail#2` as it's used only once
    at crates/swc_ecma_minifier/src/compress/optimize/inline.rs:529
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG Merging assignments in cons and alt of if statement
    at crates/swc_ecma_minifier/src/compress/optimize/conditionals.rs:525
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG sequences: Inlining sequential expressions (`ret#4`)
    at crates/swc_ecma_minifier/src/compress/optimize/sequences.rs:1421
    in merge_sequential_expr with , b: "ret#4"
    in merge_sequences_in_stmts
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG sequences: [Changed] ret#4 = o#4 ? o#4.one : o#4.two
    at crates/swc_ecma_minifier/src/compress/optimize/sequences.rs:1435
    in merge_sequential_expr with , b: "ret#4"
    in merge_sequences_in_stmts
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG inline: Replacing 'fail#2' with an expression
    at crates/swc_ecma_minifier/src/compress/optimize/inline.rs:618
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG negate_iife: Negating iife
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:39
    in optimize with , pass: 0
    in compress ast
    in minify

  DEBUG Dropping [(Atom('fail' type=inline), #2), (Atom('inner' type=inline), #3)]
    at crates/swc_ecma_minifier/src/compress/optimize/util.rs:199
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO compress: Optimizer took 5.266288ms (pass = 0)
    at crates/swc_ecma_minifier/src/compress/mod.rs:375
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO Done in 8.066734ms, kind: "perf"
    at crates/swc_timer/src/lib.rs:32
    in optimize with , pass: 0
    in compress ast
    in minify

   INFO [SWC_RUN]
var a = {};
!function(global) {
    function outer(o) {
        var ret;
        return ret = o ? o.one : o.two;
    }
    global.fail = function fail(o) {
        var result = {};
        return result.inner = function() {
            return outer({
                one: o.one,
                two: o.two
            });
        }, result;
    };
}(a);
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

PASS

    at crates/swc_ecma_minifier/src/debug.rs:120
    in compress ast
    in minify

   INFO Done in 214.034µs, kind: "perf"
    at crates/swc_timer/src/lib.rs:32
    in analyze
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG ===== Start =====
var a = {};
!function(global) {
    function outer(o) {
        var ret;
        return ret = o ? o.one : o.two;
    }
    global.fail = function fail(o) {
        var result = {};
        return result.inner = function() {
            return outer({
                one: o.one,
                two: o.two
            });
        }, result;
    };
}(a);
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

    at crates/swc_ecma_minifier/src/compress/mod.rs:275
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO compress: Running expression simplifier (pass = 1)
    at crates/swc_ecma_minifier/src/compress/mod.rs:282
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO compress: expr_simplifier took 54.487µs (pass = 1)
    at crates/swc_ecma_minifier/src/compress/mod.rs:304
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO compress/pure: Running pure optimizer (pass = 1)
    at crates/swc_ecma_minifier/src/compress/mod.rs:325
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO compress/pure: Pure optimizer took 384.27µs (pass = 1)
    at crates/swc_ecma_minifier/src/compress/mod.rs:339
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO [SWC_RUN]
var a = {};
!function(global) {
    function outer(o) {
        var ret = o ? o.one : o.two;
        return ret;
    }
    global.fail = function fail(o) {
        var result = {};
        return result.inner = function() {
            return outer({
                one: o.one,
                two: o.two
            });
        }, result;
    };
}(a);
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

PASS

    at crates/swc_ecma_minifier/src/debug.rs:120
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG ===== After pure =====
var a = {};
!function(global) {
    function outer(o) {
        var ret = o ? o.one : o.two;
        return ret;
    }
    global.fail = function fail(o) {
        var result = {};
        return result.inner = function() {
            return outer({
                one: o.one,
                two: o.two
            });
        }, result;
    };
}(a);
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

    at crates/swc_ecma_minifier/src/compress/mod.rs:349
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO compress: Running optimizer (pass = 1)
    at crates/swc_ecma_minifier/src/compress/mod.rs:355
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG inline: Decided to inline function `outer#2` as it's used only once
    at crates/swc_ecma_minifier/src/compress/optimize/inline.rs:529
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG Removing ident of an class / function expression
    at crates/swc_ecma_minifier/src/compress/optimize/unused.rs:479
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG inline: Replacing 'outer#2' with an expression
    at crates/swc_ecma_minifier/src/compress/optimize/inline.rs:618
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG inline: Inlining an iife
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:600
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG inline: Inlining a function call
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:500
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG join_vars: Joining variables
    at crates/swc_ecma_minifier/src/compress/optimize/join_vars.rs:56
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG unused: Dropping assignment to var 'ret#4', which is never used
    at crates/swc_ecma_minifier/src/compress/optimize/unused.rs:437
    in visit_mut_seq_expr
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG sequences: Inlining sequential expressions (`o#4`)
    at crates/swc_ecma_minifier/src/compress/optimize/sequences.rs:1421
    in merge_sequential_expr with , b: "o#4"
    in merge_sequential_expr with , b: "o#4 ? o#4.one : o#4.two"
    in merge_sequences_in_seq_expr with , seq_expr: "o#4 = {\n    one: o#3.one,\n    two: o#3.two\n}, o#4 ? o#4.one : o#4.two, ret#4"
    in visit_mut_seq_expr
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG sequences: [Changed] o#4 = {
    one: o#3.one,
    two: o#3.two
}
    at crates/swc_ecma_minifier/src/compress/optimize/sequences.rs:1435
    in merge_sequential_expr with , b: "o#4"
    in merge_sequential_expr with , b: "o#4 ? o#4.one : o#4.two"
    in merge_sequences_in_seq_expr with , seq_expr: "o#4 = {\n    one: o#3.one,\n    two: o#3.two\n}, o#4 ? o#4.one : o#4.two, ret#4"
    in visit_mut_seq_expr
    in visit_mut_seq_expr
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG inline: Inlining an iife
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:600
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG inline: Inlining a function call
    at crates/swc_ecma_minifier/src/compress/optimize/iife.rs:500
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG ignore_return_value: Reducing unary (!)
    at crates/swc_ecma_minifier/src/compress/optimize/mod.rs:1053
    in ignore_return_value
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG ignore_return_value: Reducing unary (void)
    at crates/swc_ecma_minifier/src/compress/optimize/mod.rs:1053
    in ignore_return_value
    in ignore_return_value
    in ignore_return_value
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG join_vars: Joining variables
    at crates/swc_ecma_minifier/src/compress/optimize/join_vars.rs:56
    in optimize with , pass: 1
    in compress ast
    in minify

  DEBUG Dropping [(Atom('outer' type=inline), #2)]
    at crates/swc_ecma_minifier/src/compress/optimize/util.rs:199
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO compress: Optimizer took 5.345692ms (pass = 1)
    at crates/swc_ecma_minifier/src/compress/mod.rs:375
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO Done in 61.536331ms, kind: "perf"
    at crates/swc_timer/src/lib.rs:32
    in optimize with , pass: 1
    in compress ast
    in minify

   INFO [SWC_RUN]
var a = {}, global;
global = a, global.fail = function(o1) {
    var result = {};
    return result.inner = function() {
        var o, ret;
        return (o = {
            one: o1.one,
            two: o1.two
        }) ? o.one : o.two, ret;
    }, result;
};
var b = a.fail({
    one: "PASS"
});
console.log(b.inner());

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