Inactive proposals are proposals that at one point were presented to the committee but were subsequently abandoned, withdrawn, or rejected.
| Proposal | Champion | Rationale |
|---|---|---|
RegExp.escape | Domenic Denicola, Benjamin Gruenbaum | Rejected: in favor of exploring a template tag function solution |
| Callable class constructors | Yehuda Katz and Allen Wirfs-Brock | Withdrawn: can be solved with decorators |
Error.isError | Jordan Harband | Withdrawn: in favor of Error stack traces proposal |
{Set,Map}.prototype.toJSON | David Bruant and Jordan Harband | Rejected: better solved by a custom replacer function. |
| Typed Objects | Till Schneidereit (previously Dmitry Lomov, Niko Matsakis) | Postponed: waiting for WebAssembly requirements to become clearer |
| Object enumerables | Leo Balter & John-David Dalton | Rejected |
| Cancelable Promises | Domenic Denicola | Withdrawn |
| Proposed Grammar change to ES Modules | Bradley Farias | Rejected: No consensus on this specific solution. |
| Dynamic Module Reform | Caridy Patiño | Withdrawn: we decided to preserve the current semantics |
| SIMD.JS - SIMD APIs | Peter Jensen, Yehuda Katz | Stage 1: Start with SIMD in WASM; implementations not pursuing SIMD.js for now. |
| Updates to Tail Calls to include an explicit syntactic opt-in | Brian Terlson & Eric Faust | Inactive |
| Object.shallowEqual | Sebastian Markbage | Withdrawn |
%constructor%.construct | James M Snell | Withdrawn |
Builtins.typeOf() and Builtins.is() | James M Snell | Withdrawn: can be solved in other ways |
| Tagged Collection Literals | Kat Marchán | Withdrawn: pursuing when new syntax and other alternatives |
Date.parse fallback semantics | Morgan Phillips | Inactive; likely replaced by uniform parsing of quasi-standard Date.parse input |
| Distinguishing literal strings | Mike West & Adam Klein | Withdrawn: Trusted Types no longer a dependent |