Making complex web apps faster
On the web, speed is everything. The responsiveness of your browser, the time it takes for a web app to appear, and how quickly that app handles user interactions all directly impact your experience as a web user. At Microsoft, we care deeply about improving web performance, and we’re making progress on it from several directions: Within the browser itself, by making Edge faster and more responsiv
ECMAScript proposal updates @ 2025-04
The changes of proposal’s status @ 107th meeting of Ecma TC39 ECMA-262 New Proposals Proposal Stage Compare Strings by Codepoint 1 Non-extensible Applies to Private 2.7 Disposable AsyncContext.Variable 1 Deferred Re-exports 2 Composites 1 Enums 1 Object.propertyCount 1 Updated Proposals Proposal From To Record & Tuple 2 withdrawn ECMA-402 New Proposals No Data Updated Proposals No Data This diff i
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Upsert to stage 4, per 2026.01.20 TC39 · tc39/proposals@131e53d
GitHub - tc39/proposal-error-frames-above: ECMAScript Proposal: Error option `framesAbove`
GitHub - tc39/proposal-iterator-chunking: a proposal to add a method to iterators for producing an iterator of its subsequences
Define normalization of full-width numeric characters in <input type=number> user input by kyouhei-horizumi · Pull Request #11616 · whatwg/html
Structured log package in node core · Issue #49296 · nodejs/node
Incubation: Inline Integrity · Issue #1135 · w3ctag/design-reviews
GitHub - WICG/local-network-access: A proposal to restrict sites from accessing a users' local network without permission
GitHub - tc39/proposal-inspector: ECMAScript Proposal, specs, and reference implementation for Inspector
GitHub - tc39/proposal-composites
Proposal is withdrawn · Issue #394 · tc39/proposal-record-tuple
GitHub - tc39/proposal-object-property-count: TC39 proposal for Object.propertyCount(target[, options])
GitHub - nicolo-ribaudo/proposal-deferred-reexports
GitHub - endojs/proposal-compare-strings-by-codepoint: A new method to compare strings by Unicode codepoint
proposal-async-context/FRAMEWORKS.md at master · tc39/proposal-async-context
GitHub - tc39/proposal-oom-fails-fast: Proposal: Out of memory immediately terminates agent cluster
GitHub - tc39/proposal-thenable-curtailment: A proposal to curtail the power of "thenable" objects.
add noderc proposal by joyeecheung · Pull Request #225 · nodejs/loaders
GitHub - standard-schema/standard-schema: A standard interface for TypeScript schema validation libraries
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