Add BCD for JSON.parse with source context

[barthy-koeln]

Summary

Added browser compat data for JSON.parse() and a reviver that expects a third argument context, containing the parsed source text.

Test results and supporting details

Quick Test to check if a browser supports the context param:

function testJSONParseWithSource() {
  const unsafeInt = (BigInt(Number.MAX_SAFE_INTEGER) + 1n);

  try {
    const parsedInt = JSON.parse(unsafeInt.toString(10), function (key, value, context) {
      return BigInt(context.source);
    });

    console.info({ parsedInt })
    console.info('Is supported: %s', parsedInt === unsafeInt)
  } catch (error) {
    console.error(error)
    console.info('Is supported: false')
  }
}

Spec

tc39.es proposal | Spec | parse
tc39.es proposal | GitHub

Implementation | Chrome

Chromium Ticket
Related Chromium Commits

Landed as "dev trial" in V8 version 10.8
Landed as "default on" flag in V8 version 11.4

chromestatus.com

Implementation | Firefox

Bugzilla Ticket (open)

Implementation | Safari

WebKit Ticket (open)

Related issues

Relates to #22766

[Elchi3]

Thank you! 👍