JSPM

get-proto

1.0.1
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  • License MIT

Robustly get the [[Prototype]] of an object

Package Exports

  • get-proto
  • get-proto/Object.getPrototypeOf
  • get-proto/Reflect.getPrototypeOf
  • get-proto/package.json

Readme

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Robustly get the [[Prototype]] of an object. Uses the best available method.

Getting started

npm install --save get-proto

Usage/Examples

const assert = require('assert');
const getProto = require('get-proto');

const a = { a: 1, b: 2, [Symbol.toStringTag]: 'foo' };
const b = { c: 3, __proto__: a };

assert.equal(getProto(b), a);
assert.equal(getProto(a), Object.prototype);
assert.equal(getProto({ __proto__: null }), null);

Tests

Clone the repo, npm install, and run npm test