/Summary/:

`JSON.parse with source`is a TC39 proposal [1] at Stage 3 of the TC39 standardization process.

It extends |JSON.parse| behavior to grant reviver functions access to the input source text and extending |JSON.stringify| behavior to support object placeholders for raw JSON text primitives.

/Bug/:
https://bugzilla.mozilla.org/show_bug.cgi?id=1855468

/Platform Coverage:/
All

/Specification/:
https://tc39.es/proposal-json-parse-with-source

/Standards Body/:
TC39

/Preference/:
Will be available in the JS shell using the option `--enable-json-parse-with-source` when Bug 1860887 lands. Will be preffable under `javascript.options.experimental.enable_json_parse_with_source` when Bug 1865406 lands.
/
/
/Other browsers/:
Chrome Status: In developer trial

https://chromestatus.com/feature/5121582673428480


Safari Status: In development

https://bugs.webkit.org/show_bug.cgi?id=248031


[1]: https://github.com/tc39/proposal-array-from-async

[2]: https://tc39.es/process-document/

--
Bryan Thrall
Senior Software Engineer
Mozilla

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