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Björn
b963b3396c
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4 years ago | |
|---|---|---|
| .. | ||
| .github/workflows | 4 years ago | |
| test | 4 years ago | |
| .eslintrc | 4 years ago | |
| .travis.yml | 4 years ago | |
| CHANGELOG.md | 4 years ago | |
| LICENSE | 4 years ago | |
| README.md | 4 years ago | |
| auto.js | 4 years ago | |
| implementation.js | 4 years ago | |
| index.js | 4 years ago | |
| package.json | 4 years ago | |
| polyfill.js | 4 years ago | |
| shim.js | 4 years ago | |
README.md
#object-is 
ES2015-compliant shim for Object.is - differentiates between -0 and +0, and can compare to NaN.
Essentially, Object.is returns the same value as === - but true for NaN, and false for -0 and +0.
Example
Object.is = require('object-is');
var assert = require('assert');
assert.ok(Object.is());
assert.ok(Object.is(undefined));
assert.ok(Object.is(undefined, undefined));
assert.ok(Object.is(null, null));
assert.ok(Object.is(true, true));
assert.ok(Object.is(false, false));
assert.ok(Object.is('foo', 'foo'));
var arr = [1, 2];
assert.ok(Object.is(arr, arr));
assert.notOk(Object.is(arr, [1, 2]));
assert.ok(Object.is(0, 0));
assert.ok(Object.is(-0, -0));
assert.notOk(Object.is(0, -0));
assert.ok(Object.is(NaN, NaN));
assert.ok(Object.is(Infinity, Infinity));
assert.ok(Object.is(-Infinity, -Infinity));
Tests
Simply clone the repo, npm install, and run npm test