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CHANGELOG.md	2bdf874dbb create	11 月之前
LICENSE	2bdf874dbb create	11 月之前
README.md	2bdf874dbb create	11 月之前
index.d.ts	2bdf874dbb create	11 月之前
index.js	2bdf874dbb create	11 月之前
package.json	2bdf874dbb create	11 月之前
tsconfig.json	2bdf874dbb create	11 月之前

is-negative-zero

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

README.md

is-negative-zero

Example

Tests