which-typed-array (original) (raw)

1.1.19 • Public • Published 2 months ago

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Which kind of Typed Array is this JavaScript value? Works cross-realm, without instanceof, and despite Symbol.toStringTag.

Example

var whichTypedArray = require('which-typed-array'); var assert = require('assert');

assert.equal(false, whichTypedArray(undefined)); assert.equal(false, whichTypedArray(null)); assert.equal(false, whichTypedArray(false)); assert.equal(false, whichTypedArray(true)); assert.equal(false, whichTypedArray([])); assert.equal(false, whichTypedArray({})); assert.equal(false, whichTypedArray(/a/g)); assert.equal(false, whichTypedArray(new RegExp('a', 'g'))); assert.equal(false, whichTypedArray(new Date())); assert.equal(false, whichTypedArray(42)); assert.equal(false, whichTypedArray(NaN)); assert.equal(false, whichTypedArray(Infinity)); assert.equal(false, whichTypedArray(new Number(42))); assert.equal(false, whichTypedArray('foo')); assert.equal(false, whichTypedArray(Object('foo'))); assert.equal(false, whichTypedArray(function () {})); assert.equal(false, whichTypedArray(function* () {})); assert.equal(false, whichTypedArray(x => x * x)); assert.equal(false, whichTypedArray([]));

assert.equal('Int8Array', whichTypedArray(new Int8Array())); assert.equal('Uint8Array', whichTypedArray(new Uint8Array())); assert.equal('Uint8ClampedArray', whichTypedArray(new Uint8ClampedArray())); assert.equal('Int16Array', whichTypedArray(new Int16Array())); assert.equal('Uint16Array', whichTypedArray(new Uint16Array())); assert.equal('Int32Array', whichTypedArray(new Int32Array())); assert.equal('Uint32Array', whichTypedArray(new Uint32Array())); assert.equal('Float32Array', whichTypedArray(new Float32Array())); assert.equal('Float64Array', whichTypedArray(new Float64Array())); assert.equal('BigInt64Array', whichTypedArray(new BigInt64Array())); assert.equal('BigUint64Array', whichTypedArray(new BigUint64Array()));

Tests

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

Readme

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