Stage 0 proposals have been presented to the committee and not rejected definitively, but have not yet achieved any of the criteria to get into stage 1.
|🚀| Proposal | Champion | Stage
|---|------------------------------------------------------------------------------------ |-------------- | ------|------
| | Defensible Classes | Mark Miller & Doug Crockford | 0
| | Relationships | Mark Miller & Waldemar Horwat | 0
|🚀| String.prototype.at | Mathias Bynens & Rick Waldron | 0 |
| | Structured Clone |Dmitry Lomov |0
| | Weak References | Mark Miller & Dave Herman | 0
|🚀| Object.getOwnPropertyDescriptors | Rick Waldron & Andrea Giammarchi | 0
|🚀| Set/Map.prototype.toJSON | David Bruant ? | 0
| | Annex B - HTML Attribute Event Handlers| Allen Wirfs-Brock | 0
| | Reflect.isCallable/Reflect.isConstructor| Caitlin Potter| 0
| | Additional metaproperties| Allen Wirfs-Brock| 0
| | Function Bind Syntax| Kevin Smith | 0
| | Do Expressions | Andreas Rossberg | 0
| | RegExp | Gorkem Yakin, Brian Terlson, & Nozomu Katō | 0
|🚀| Encapsulated private state for objects | Yehuda Katz & Allen Wirfs-Brock | 0
| | Error.isError | Jordan Harband | 0
| | 64-Bit Integer Operations | Brendan Eich | 0
🚀 means the champion thinks it's ready to advance but has not yet presented to the committee.