feat(minifier): new Date() has ValueType::Object

[Boshen]

No description provided.

[Boshen]

Merge activity

• Aug 10, 4:15 AM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Aug 10, 4:48 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Aug 10, 4:54 AM UTC: Merged by the Graphite merge queue.

[Boshen]

• refactor(ecmascript): change IsGlobalReference to GlobalContext #12952
• feat(minifier): new Date() has ValueType::Object #12951 👈 (View in Graphite)
• main

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[Copilot]

Pull Request Overview

This PR implements value type determination for new Date() expressions in the JavaScript minifier, specifically recognizing that new Date() creates an object. The change enables better constant folding optimizations for Date constructor expressions.

• Adds support for NewExpression in the value type determination system
• Implements specific handling for new Date() to return ValueType::Object
• Updates test expectations to reflect the improved minification of Date-related expressions

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
crates/oxc_ecmascript/src/constant_evaluation/value_type.rs	Adds NewExpression support and Date constructor detection for value type determination
crates/oxc_minifier/src/peephole/fold_constants.rs	Updates test cases to expect optimized output for new Date() expressions

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12951 will not alter performance

_{Comparing 08-10-feat_minifier_new_date_has_valuetype_object_ (53f7a9f) with main (96b4009)¹}

Summary

✅ 34 untouched benchmarks

Footnotes

1. No successful run was found on main (53f7a9f) during the generation of this report, so 96b4009 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩