FF154 Relnote/ExprFeat: Iterator.includes()

[hamishwillee]

FF154 supports the Iterator.prototype.includes() in https://bugzilla.mozilla.org/show_bug.cgi?id=2034104

This adds release note and removes the entry from the experimental features page.

Related docs can be tracked in #44838

[github-actions]

Preview URLs (2 pages)

• /en-US/docs/Mozilla/Firefox/Experimental_features
• /en-US/docs/Mozilla/Firefox/Releases/154

External URLs (81)

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox

• https://bugzil.la/1057233 (1 time)
• https://bugzil.la/1099557 (1 time)
• https://bugzil.la/1223880 (1 time)
• https://bugzil.la/1278697 (1 time)
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• https://bugzil.la/2046153 (1 time)
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• https://bugzil.la/558594 (1 time)
• https://bugzil.la/778617 (1 time)
• https://bugzil.la/917755 (1 time)
• https://bugzil.la/918189 (1 time)
• https://bugzilla.mozilla.org (1 time)
• https://developers.google.com/search/docs/specialty/explicit/guidelines (1 time)
• https://drafts.css-houdini.org/css-typed-om/ (1 time)
• https://drafts.csswg.org/css-inline/ (1 time)
• https://en.wikipedia.org/wiki/Graphics_Processing_Unit (1 time)
• https://github.com/mozilla/explainers/tree/main/archive/ppa-experiment (1 time)
• https://github.com/tc39/proposal-intl-locale-info (1 time)
• https://jpeg.org/jpegxl/ (2 times)
• https://support.mozilla.org/en-US/kb/about-config-editor-firefox (1 time)
• https://support.mozilla.org/en-US/kb/privacy-preserving-attribution (1 time)
• https://w3c.github.io/mathml-core/ (1 time)
• https://w3c.github.io/ppa/ (1 time)
• https://wiki.mozilla.org/Origin_Trials (1 time)
• https://www.firefox.com/en-US/ (1 time)
• https://www.firefox.com/en-US/channel/desktop/ (3 times)
• https://www.firefox.com/en-US/channel/desktop/developer/ (2 times)
• https://www.rtalabel.org/?content=howto (1 time)

---

URL: /en-US/docs/Mozilla/Firefox/Releases/154
Title: Firefox 154 release notes for developers (Beta)

• https://bugzil.la/2034104 (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2026-07-27 00:37:49)