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Set methods

Category

JavaScript

Type

Chromium catches up

Status

Enabled by default (Chrome 122)

Intent stage

None

• Breaking change: No
• Enterprise impact: None
• Chromium flag: --harmony_set_methods
• Spec maturity: Working draft
• Web Platform Tests: Yes

WPT details: https://github.com/tc39/test262/pull/3966

Summary

Set methods are new methods like union and intersection that are added to JavaScript's built-in `Set` class.

Standards & signals

• Specification: https://tc39.es/proposal-set-methods
• Firefox: Positive
• Safari: Positive
• Web developers: No signals
• Tracking bug: https://bugs.chromium.org/p/v8/issues/detail?id=13556

Ecosystem

• Web Platform Tests: https://wpt.fyi/results/?q=set-methods
• Chrome Platform Showcase: https://chrome-platform-showcase.paulkinlan-ea.deno.net/features
• GenDN reference: https://gendn.paulkinlan-ea.deno.net/features
• chrome.dev demos search: https://www.google.com/search?q=site%3Achrome.dev+Set%20methods
• MDN Web Docs: https://developer.mozilla.org/en-US/search?q=Set%20methods
• Baseline status: https://webstatus.dev/?q=Set%20methods

View on chromestatus.com