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feat(minifier): compress if (foo, !!bar) to if (foo, bar) #10164

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Merged
graphite-app merged 1 commit into from
Apr 2, 2025
Merged

feat(minifier): compress if (foo, !!bar) to if (foo, bar) #10164

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6 changes: 6 additions & 0 deletions crates/oxc_minifier/src/peephole/minimize_expression_in_boolean_context.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,11 @@ impl<'a> PeepholeOptimizations {
return true;
}
}
Expression::SequenceExpression(seq_expr) => {
if let Some(last) = seq_expr.expressions.last_mut() {
return self.try_fold_expr_in_boolean_context(last, ctx);
}
}
_ => {}
}
false
Expand Down Expand Up @@ -143,5 +148,6 @@ mod test {
test("if (anything1 ? anything2 : (0, false));", "anything1 && anything2");
test("if(!![]);", "");
test("if (+a === 0) { b } else { c }", "+a == 0 ? b : c"); // should not be folded to `a ? b : c` (`+a` might be NaN)
test("if (foo, !!bar) { let baz }", "if (foo, bar) { let baz }");
}
}
8 changes: 4 additions & 4 deletions tasks/minsize/minsize.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -11,17 +11,17 @@ Original | minified | minified | gzip | gzip | Fixture

544.10 kB | 71.38 kB | 72.48 kB | 25.85 kB | 26.20 kB | lodash.js

555.77 kB | 270.84 kB | 270.13 kB | 88.26 kB | 90.80 kB | d3.js
555.77 kB | 270.83 kB | 270.13 kB | 88.25 kB | 90.80 kB | d3.js

1.01 MB | 440.17 kB | 458.89 kB | 122.37 kB | 126.71 kB | bundle.min.js

1.25 MB | 647.00 kB | 646.76 kB | 160.28 kB | 163.73 kB | three.js

2.14 MB | 716.14 kB | 724.14 kB | 161.79 kB | 181.07 kB | victory.js
2.14 MB | 716.13 kB | 724.14 kB | 161.80 kB | 181.07 kB | victory.js

3.20 MB | 1.01 MB | 1.01 MB | 324.14 kB | 331.56 kB | echarts.js
3.20 MB | 1.01 MB | 1.01 MB | 324.12 kB | 331.56 kB | echarts.js

6.69 MB | 2.28 MB | 2.31 MB | 466.11 kB | 488.28 kB | antd.js

10.95 MB | 3.35 MB | 3.49 MB | 860.94 kB | 915.50 kB | typescript.js
10.95 MB | 3.35 MB | 3.49 MB | 860.93 kB | 915.50 kB | typescript.js

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