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is-typed-array

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is-typed-array

Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.


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Maintainers
2
Weekly downloads
32,740,456
increased by5.13%
Bundle size
5 kB
Minified + gzipped

Weekly downloads

Package description

What is is-typed-array?

The is-typed-array npm package is a utility for checking if a given value is a typed array. Typed arrays are array-like objects that provide a mechanism for reading and writing raw binary data in memory buffers. This package helps in determining whether a variable is one of the typed array types, such as Int8Array, Uint8Array, Float32Array, etc.

What are is-typed-array's main functionalities?

Check if a value is a typed array

This feature allows you to check if a given value is a typed array. The function returns true if the value is one of the typed array types, and false otherwise.

const isTypedArray = require('is-typed-array');

const buffer = new ArrayBuffer(16);
const int16Array = new Int16Array(buffer);
const result = isTypedArray(int16Array); // true

Other packages similar to is-typed-array

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is-typed-array Version Badge

github actions coverage [![dependency status][5]][6] [![dev dependency status][7]][8] License Downloads

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Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and despite ES6 Symbol.toStringTag.

Example

var isTypedArray = require('is-typed-array');
var assert = require('assert');

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

assert.ok(isTypedArray(new Int8Array()));
assert.ok(isTypedArray(new Uint8Array()));
assert.ok(isTypedArray(new Uint8ClampedArray()));
assert.ok(isTypedArray(new Int16Array()));
assert.ok(isTypedArray(new Uint16Array()));
assert.ok(isTypedArray(new Int32Array()));
assert.ok(isTypedArray(new Uint32Array()));
assert.ok(isTypedArray(new Float32Array()));
assert.ok(isTypedArray(new Float64Array()));
assert.ok(isTypedArray(new BigInt64Array()));
assert.ok(isTypedArray(new BigUint64Array()));

Tests

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

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Last updated on 02 Feb 2024

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