get-proto

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

Getting started

npm install --save get-proto

Usage

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