@teamteanpm2024/rerum-dolore-magni

Robustly get the length of a Typed Array, or false if it is not a Typed Array. Works cross-realm, in every engine, even if the length property is overridden.

Example

1var typedArrayLength = require('@teamteanpm2024/rerum-dolore-magni');
2var assert = require('assert');
3
4assert.equal(false, typedArrayLength(undefined));
5assert.equal(false, typedArrayLength(null));
6assert.equal(false, typedArrayLength(false));
7assert.equal(false, typedArrayLength(true));
8assert.equal(false, typedArrayLength([]));
9assert.equal(false, typedArrayLength({}));
10assert.equal(false, typedArrayLength(/a/g));
11assert.equal(false, typedArrayLength(new RegExp('a', 'g')));
12assert.equal(false, typedArrayLength(new Date()));
13assert.equal(false, typedArrayLength(42));
14assert.equal(false, typedArrayLength(NaN));
15assert.equal(false, typedArrayLength(Infinity));
16assert.equal(false, typedArrayLength(new Number(42)));
17assert.equal(false, typedArrayLength('foo'));
18assert.equal(false, typedArrayLength(Object('foo')));
19assert.equal(false, typedArrayLength(function () {}));
20assert.equal(false, typedArrayLength(function* () {}));
21assert.equal(false, typedArrayLength(x => x * x));
22assert.equal(false, typedArrayLength([]));
23
24assert.equal(1, typedArrayLength(new Int8Array(1)));
25assert.equal(2, typedArrayLength(new Uint8Array(2)));
26assert.equal(3, typedArrayLength(new Uint8ClampedArray(3)));
27assert.equal(4, typedArrayLength(new Int16Array(4)));
28assert.equal(5, typedArrayLength(new Uint16Array(5)));
29assert.equal(6, typedArrayLength(new Int32Array(6)));
30assert.equal(7, typedArrayLength(new Uint32Array(7)));
31assert.equal(8, typedArrayLength(new Float32Array(8)));
32assert.equal(9, typedArrayLength(new Float64Array(9)));
33assert.equal(10, typedArrayLength(new BigInt64Array(10)));
34assert.equal(11, typedArrayLength(new BigUint64Array(11)));

Tests

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