feat(minifier): compress typeof a.b === 'undefined' to a.b === void 0

[sapphi-red]

The special behavior of typeof is only for the identifier, so it should be safe to compress typeof a.b === 'undefined' (and other expressions) to a.b === void 0.

[sapphi-red]

• feat(minifier): compress typeof a.b === 'undefined' to a.b === void 0 #8751 👈 (View in Graphite)
• feat(minifier): compress a == null && b to a ?? b when return value is ignored #8749
• feat(minifier): support a[0] and this.a in has_no_side_effect_for_evaluation_same_target #8748
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #8751 will not alter performance

_{Comparing 01-27-feat_minifier_compress_typeof_a.b_undefined_to_a.b_void_0_ (ad14403) with main (a3b078a)}

Summary

✅ 33 untouched benchmarks

[Boshen]

Merge activity

• Jan 27, 9:25 AM EST: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 27, 9:25 AM EST: A user added this pull request to the Graphite merge queue.
• Jan 27, 9:46 AM EST: A user merged this pull request with the Graphite merge queue.