tree: 1195f5204afebd348ca3cb9376846982a1bc2aeb [path history] [tgz]
  1. .eslintrc
  2. .jscs.json
  3. .npmignore
  4. .travis.yml
  5. index.js
  6. LICENSE
  7. package.json
  8. README.md
  9. test.js
node_modules/is-negative-zero/README.md

#is-negative-zero Version Badge

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browser support

Is this value negative zero? === will lie to you.

Example

var isNegativeZero = require('is-negative-zero');
var assert = require('assert');

assert.notOk(isNegativeZero(undefined));
assert.notOk(isNegativeZero(null));
assert.notOk(isNegativeZero(false));
assert.notOk(isNegativeZero(true));
assert.notOk(isNegativeZero(0));
assert.notOk(isNegativeZero(42));
assert.notOk(isNegativeZero(Infinity));
assert.notOk(isNegativeZero(-Infinity));
assert.notOk(isNegativeZero(NaN));
assert.notOk(isNegativeZero('foo'));
assert.notOk(isNegativeZero(function () {}));
assert.notOk(isNegativeZero([]));
assert.notOk(isNegativeZero({}));

assert.ok(isNegativeZero(-0));

Tests

Simply clone the repo, npm install, and run npm test