JavaScript/Roadmap

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Q3 2013

Firefox 26

August 6 – September 16


Q4 2013

Firefox 27

September 17 – October 28

Firefox 28

October 29 – December 9
  • [DONE] 927516 - Increase function compilation limits for Workers
  • [DONE] 929797 - Implement memory reporting of child processes
  • [DONE] 933882 - Invalidate JIT code instead of doing full GC on debug mode toggle (Firebug perf)
  • [DONE] 934799 - Lazify delazifying lazy scripts (Debugger perf)
  • [DONE] 930411 - ES6: Implement module export declarations
  • [PROPOSED] 637572 - 935203 Implement Debugger.Source (for Firebug)
  • [PROPOSED] 332176 - Fix line numbers in eval()'d code
  • [PROPOSED] 716647 - Debug Ion code on stack
  • [PROPOSED] 924839 - Update ICU (for i18n)
  • [PROPOSED] 837963 - ECMA-402 i18n API
  • [PROPOSED] 753203 - Exact Rooting for GGC
  • [PROPOSED] 631811 - Run Valgrind on TBPL, not just Nightly
  • [PROPOSED] 934669 - Warn on Object.prototype.{,un}watch()
  • [PROPOSED] 499198 - WBGP: Optimize Peacekeeper benchmark
  • [PROPOSED] 932402 - Shumway: create multiple globals
  • [PROPOSED] 933467 - Shumway: implement iterable weak maps
  • [PROPOSED] 939614 - Ion: Add optimization levels
  • JS bugs fixed in Firefox 28

Q1 2014

Firefox 29

December 10 – February 3
  • [DONE] 785905 - IonMonkey: off thread MIR construction
  • [DONE] 904918 - OdinMonkey: add support for Float32
  • [DONE] 941830 - Extend asm.js compiled code caching to Workers
  • [DONE] 943303 - Use range analysis to eliminate comparisons
  • [DONE] 631811 - Run Valgrind on TBPL, not just Nightly
  • [DONE] 753203 - Exact Rooting for GGC
  • [DONE] 924839 - Update ICU (for i18n)
  • [DONE] 631811 - Run Valgrind on TBPL, not just Nightly
  • [DONE] 939614 - Ion: Add optimization levels
  • [DONE] 872273 - Better reporting of privileged exceptions in unprivileged scopes
  • [DONE] 959597 - Add an ARM simulator for JIT code
  • [DONE] 960367 - OdinMonkey: compress source stored in cache file 4-8x
  • [DONE] 918879 - ES6: Implement String#codePointAt and String.fromCodePoint
  • [DONE] 932982 - IonMonkey: Don't throw away / invalidate active ion code during GC
  • [DONE] 939715 - PJS: Move polyfill into self-hosted code
  • [DONE] 952898 - Compliance issues with `String.prototype.startsWith` and `String.prototype.endsWith` due to spec changes
  • [PROPOSED] 619558 - GGC
  • [PROPOSED] 930908 - Implement synchronous channel for Shumway workers
  • [PROPOSED] 932402 - Shumway: create multiple globals
  • [PROPOSED] 933467 - Shumway: implement iterable weak maps
  • [PROPOSED] 630464 - Pass exception info to window.onerror()
  • [PROPOSED] 856533 - Implement Ion escape analysis
  • [PROPOSED] 800200 - Remove legacy JSD1 debugging API
  • [PROPOSED] TBD - Debugger: Implement low-level heap analysis (without UI)
  • JS bugs fixed in Firefox 29

Firefox 30

February 4 – March 17
  • [PROPOSED] 619558 - GGC
  • [PROPOSED] 918987 - ES6: Implement String.prototype.normalize()
  • [PROPOSED] 941805 - Make the pool of JS workers be per-process rather than per-runtime
  • [PROPOSED] 900784 - Add JS start-up cache (for Firefox OS and Shumway)?
  • [PROPOSED] TBD - Debugger: Implement UI for low-level heap analysis?
  • JS bugs fixed in Firefox 30
ID Status Summary Whiteboard Keywords
941805 RESOLVED Make the pool of JS workers be per-process rather than per-runtime [js:p1:fx30] [shumway:m2]

1 Total; 0 Open (0%); 1 Resolved (100%); 0 Verified (0%);


Q2 2014

Firefox 31

March 18 – April 28
  • [PROPOSED] 854061 - Implement asm.js parser?
  • [PROPOSED] 861963 - Integrate test262 test suite?
  • [PROPOSED] 792439 - ES6 WeakSets?
  • [PROPOSED] 578700 - ES7 Typed Objects?
  • [PROPOSED] TBD - Implement Visual Studio plugin for JS debugger?
  • [PROPOSED] 894105 - SIMD?
  • [PROPOSED] 800355 - Implement Object.observe?
  • [PROPOSED] TBD - JIT support for AArch64?
ID Status Summary Whiteboard Keywords
619558 RESOLVED [meta] Implement generational garbage collection [games:p2] [js:p1:fx31][talos_regression][qa-] feature, leave-open, perf
918987 RESOLVED Implement String.prototype.normalize [js:p2:fx31][DocArea=JS][qa-] dev-doc-complete, feature, relnote

2 Total; 0 Open (0%); 2 Resolved (100%); 0 Verified (0%);


H2 2014

  • [PROPOSED] 856533 - Escape Analysis?
  • [PROPOSED] 801869 - PJS?
  • [PROPOSED] 902174 - G1: The Good Parts?
  • [PROPOSED] 568953 - ES6 Modules?
  • [PROPOSED] 837314 - ES6 Classes?
  • [PROPOSED] 645416 - ES6 Symbols?
  • [PROPOSED] TBD - tracelogger?
  • [PROPOSED] TBD - Compacting GC?
  • [PROPOSED] TBD - Concurrent GC?
  • December: ES6 to be standardized?
ID Status Summary Whiteboard Keywords

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);