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    • agendas

      Public
      TC39 meeting agendas
      JavaScript
      1991.2k03Updated Nov 16, 2025Nov 16, 2025
    • ecma262

      Public
      Status, process, and documents for ECMA-262
      HTML
      1.4k16k353123Updated Nov 16, 2025Nov 16, 2025
    • dataset

      Public
      The automatic track tc39 proposals
      TypeScript
      124520Updated Nov 16, 2025Nov 16, 2025
    • proposal-temporal

      Public
      Provides standard objects and functions for working with dates and times.
      HTML
      1713.6k349Updated Nov 15, 2025Nov 15, 2025
    • ecma426

      Public
      Source map specification, RFCs and new proposals.
      JavaScript
      22172627Updated Nov 14, 2025Nov 14, 2025
    • test262

      Public
      Official ECMAScript Conformance Test Suite
      JavaScript
      5122.6k21373Updated Nov 14, 2025Nov 14, 2025
    • tc39.github.io

      Public
      Get involved in specifying JavaScript
      HTML
      62332272Updated Nov 14, 2025Nov 14, 2025
    • proposal-await-dictionary

      Public
      A proposal to add Promise.allKeyed to ECMAScript
      JavaScript
      79671Updated Nov 13, 2025Nov 13, 2025
    • proposal-intl-era-monthcode

      Public
      To specify necessary details about era, eraYear and monthCode usage with Temporal for non-ISO calendars.
      HTML
      84173Updated Nov 13, 2025Nov 13, 2025
    • proposal-amount

      Public
      Numbers with precision and a unit for JavaScript
      HTML
      537313Updated Nov 13, 2025Nov 13, 2025
    • proposal-native-promise-predicate

      Public
      ECMAScript Proposal and spec for exposing a native promise predicate
      JavaScript
      11231Updated Nov 13, 2025Nov 13, 2025
    • ECMAScript Proposal for adopting native promise state
      JavaScript
      0710Updated Nov 13, 2025Nov 13, 2025
    • proposals

      Public
      Tracking ECMAScript Proposals
      73919k64Updated Nov 13, 2025Nov 13, 2025
    • ecmarkup

      Public
      An HTML superset/Markdown subset source format for ECMAScript and related specifications
      HTML
      752359711Updated Nov 12, 2025Nov 12, 2025
    • proposal-error-stack-accessor

      Public
      ECMAScript Proposal, specs, and reference implementation for Error.prototype.stack accessor
      21951Updated Nov 12, 2025Nov 12, 2025
    • proposal-async-context

      Public
      Async Context for JavaScript
      HTML
      24784235Updated Nov 11, 2025Nov 11, 2025
    • JavaScript
      413060Updated Nov 11, 2025Nov 11, 2025
    • 1322Updated Nov 11, 2025Nov 11, 2025
    • ecma402

      Public
      Status, process, and documents for ECMA 402
      HTML
      11358715713Updated Nov 7, 2025Nov 7, 2025
    • notes

      Public
      TC39 meeting notes
      JavaScript
      12669317Updated Nov 7, 2025Nov 7, 2025
    • ECMAScript Proposal, specs, and reference implementation for Inspector
      1610Updated Nov 7, 2025Nov 7, 2025
    • Proposal for extending JSON.parse to expose input source text.
      HTML
      1025260Updated Nov 7, 2025Nov 7, 2025
    • a TC39 proposal to synchronise the advancement of multiple iterators
      TypeScript
      39700Updated Nov 4, 2025Nov 4, 2025
    • a TC39 proposal to create iterators by sequencing existing iterators
      JavaScript
      48000Updated Nov 3, 2025Nov 3, 2025
    • A proposal to curtail the power of "thenable" objects.
      01050Updated Oct 29, 2025Oct 29, 2025
    • tg5

      Public
      TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/
      326280Updated Oct 29, 2025Oct 29, 2025
    • proposal-math-sum

      Public
      TC39 proposal to add a summation method to JavaScript
      JavaScript
      512550Updated Oct 28, 2025Oct 28, 2025
    • TC39 proposal for Uint8Array<->base64/hex
      HTML
      1228151Updated Oct 28, 2025Oct 28, 2025
    • Documentation of how TC39 operates and how to participate
      302132210Updated Oct 27, 2025Oct 27, 2025
    • 34431Updated Oct 26, 2025Oct 26, 2025