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    • dataset

      Public
      The automatic track tc39 proposals
      TypeScript
      114620Updated Feb 5, 2026Feb 5, 2026
    • agendas

      Public
      TC39 meeting agendas
      JavaScript
      2001.2k02Updated Feb 4, 2026Feb 4, 2026
    • proposal-temporal

      Public
      Provides standard objects and functions for working with dates and times.
      HTML
      1723.7k239Updated Feb 4, 2026Feb 4, 2026
    • proposal-typedarray-findwithin

      Public
      A proposal for searching for a subsequence within a TypedArray
      JavaScript
      0761Updated Feb 4, 2026Feb 4, 2026
    • test262

      Public
      Official ECMAScript Conformance Test Suite
      JavaScript
      5232.7k20973Updated Feb 4, 2026Feb 4, 2026
    • proposals

      Public
      Tracking ECMAScript Proposals
      74119k32Updated Feb 4, 2026Feb 4, 2026
    • proposal-typedarray-concat

      Public
      A proposal for optimizable TypedArray concatenation
      JavaScript
      0261Updated Feb 4, 2026Feb 4, 2026
    • tc39.github.io

      Public
      Get involved in specifying JavaScript
      HTML
      61332282Updated Feb 3, 2026Feb 3, 2026
    • proposal-async-context

      Public
      Async Context for JavaScript
      HTML
      25816236Updated Feb 3, 2026Feb 3, 2026
    • ecma262

      Public
      Status, process, and documents for ECMA-262
      HTML
      1.4k16k358117Updated Feb 3, 2026Feb 3, 2026
    • A modest proposal for importing bytes in javascript
      JavaScript
      57231Updated Feb 1, 2026Feb 1, 2026
    • ecmarkup

      Public
      An HTML superset/Markdown subset source format for ECMAScript and related specifications
      HTML
      742369913Updated Feb 1, 2026Feb 1, 2026
    • notes

      Public
      TC39 meeting notes
      JavaScript
      12570019Updated Jan 30, 2026Jan 30, 2026
    • faq

      Public
      07210Updated Jan 30, 2026Jan 30, 2026
    • ecma426

      Public
      Source map specification, RFCs and new proposals.
      JavaScript
      25175628Updated Jan 29, 2026Jan 29, 2026
    • 54573Updated Jan 29, 2026Jan 29, 2026
    • To specify necessary details about era, eraYear and monthCode usage with Temporal for non-ISO calendars.
      HTML
      8690Updated Jan 28, 2026Jan 28, 2026
    • A proposal to add signals to JavaScript.
      714.1k1008Updated Jan 25, 2026Jan 25, 2026
    • Experimental harness for test262
      JavaScript
      4792145Updated Jan 24, 2026Jan 24, 2026
    • HTML
      62550Updated Jan 23, 2026Jan 23, 2026
    • ecma402

      Public
      Status, process, and documents for ECMA 402
      HTML
      1145951589Updated Jan 23, 2026Jan 23, 2026
    • Incrementally add functionality to accessors via built-in decorators
      1701Updated Jan 23, 2026Jan 23, 2026
    • 0800Updated Jan 23, 2026Jan 23, 2026
    • JavaScript
      12150Updated Jan 22, 2026Jan 22, 2026
    • proposal-error-limit-option

      Public
      ECMAScript Proposal: Error option `limit`
      HTML
      0710Updated Jan 21, 2026Jan 21, 2026
    • proposal-error-frames-above

      Public
      ECMAScript Proposal: Error option `framesAbove`
      HTML
      0630Updated Jan 21, 2026Jan 21, 2026
    • tg5

      Public
      TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/
      326280Updated Jan 20, 2026Jan 20, 2026
    • Standardizing Error.captureStackTrace
      41350Updated Jan 20, 2026Jan 20, 2026
    • 25670Updated Jan 20, 2026Jan 20, 2026
    • `Intl.UnitFormat` specification [draft]
      HTML
      31050Updated Jan 20, 2026Jan 20, 2026