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https://github.com/react/react-native-devtools-frontend.git
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Tim van der Lippe
2c89197d0d
R=jacktfranklin@chromium.org No-Presubmit: True Bug: none Change-Id: I52dc24b12e350787085c5e3d131cface7ea87142 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3060705 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Paul Lewis <aerotwist@chromium.org>
unbox-primitive 
Unbox a boxed JS primitive value. This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and works despite ES6 Symbol.toStringTag.
Example
var unboxPrimitive = require('unbox-primitive');
var assert = require('assert');
assert.equal(unboxPrimitive(new Boolean(false)), false);
assert.equal(unboxPrimitive(new String('f')), 'f');
assert.equal(unboxPrimitive(new Number(42)), 42);
const s = Symbol();
assert.equal(unboxPrimitive(Object(s)), s);
assert.equal(unboxPrimitive(new BigInt(42)), 42n);
// any primitive, or non-boxed-primitive object, will throw
Tests
Simply clone the repo, npm install, and run npm test