JavaScript/Roadmap

Q3 2013

Firefox 26

August 6 - September 16

• [DONE] 547941 - ES6 WeakMaps
• [DONE] 666399 - ES6 Generator syntax
• JS bugs fixed in Firefox 26

Q4 2013

Firefox 27

September 17 - October 28

• [PROPOSED] 933882 - Invalidate JIT code instead of doing full GC on debug mode toggle (Firebug perf)
• JS bugs fixed in Firefox 27

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] 943303 - Use range analysis to eliminate comparisons
• [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] 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

Firefox 31

March 18 – April 28

• JS bugs fixed in Firefox 31

Q2 2014

• [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?

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?