is-negative-zero
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2.0.3 • Public • Published

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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

Versions

Current Tags

  • Version
    Downloads (Last 7 Days)
    • Tag
  • 2.0.3
    12,681,988
    • latest

Version History

  • Version
    Downloads (Last 7 Days)
    • Published
  • 2.0.3
    12,681,988
  • 2.0.2
    15,551,117
  • 2.0.1
    2,168,418
  • 2.0.0
    349,524
  • 1.0.0
    41
  • 0.1.1
    45
  • 0.1.0
    37

Package Sidebar

Install

npm i is-negative-zero

Weekly Downloads

30,751,215

Version

2.0.3

License

MIT

Unpacked Size

27.1 kB

Total Files

12

Last publish

Collaborators

  • ljharb