Strict TypedArray Type Check inspired by util.types implementation of Node.js

checkTypedArrayTypes.js

/**
 * @file Strict TypedArray Type Check inspired by Node.js util.types implementation
 * @see https://github.com/nodejs/node/blob/v16.x/lib/internal/util/types.js
 */

const TypedArrayPrototype = Object.getPrototypeOf(Uint8Array).prototype;
const getTypedArrayPrototypeSybolToStringTag = Object.getOwnPropertyDescriptor(TypedArrayPrototype, Symbol.toStringTag).get;

/**
 * @param {unknown} value
 * @returns {value is Uint8Array|Uint8ClampedArray|Uint16Array|Uint32Array|Int8Array|Int16Array|Int32Array|Float32Array|Float64Array|BigUint64Array|BigInt64Array}
 */
export function isTypedArray(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) !== undefined;
}

/**
 * @param {unknown} value
 * @returns {value is Uint8Array}
 */
export function isUint8Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Uint8Array';
}

/**
 * @param {unknown} value
 * @returns {value is Uint8ClampedArray}
 */
export function isUint8ClampedArray(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Uint8ClampedArray';
}

/**
 * @param {unknown} value
 * @returns {value is Uint16Array}
 */
export function isUint16Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Uint16Array';
}

/**
 * @param {unknown} value
 * @returns {value is Uint32Array}
 */
export function isUint32Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Uint32Array';
}

/**
 * @param {unknown} value
 * @returns {value is Int8Array}
 */
export function isInt8Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Int8Array';
}

/**
 * @param {unknown} value
 * @returns {value is Int16Array}
 */
export function isInt16Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Int16Array';
}

/**
 * @param {unknown} value
 * @returns {value is Int32Array}
 */
export function isInt32Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Int32Array';
}

/**
 * @param {unknown} value
 * @returns {value is Float32Array}
 */
export function isFloat32Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Float32Array';
}

/**
 * @param {unknown} value
 * @returns {value is Float64Array}
 */
export function isFloat64Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'Float64Array';
}

/**
 * @param {unknown} value
 * @returns {value is BigInt64Array}
 */
export function isBigInt64Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'BigInt64Array';
}

/**
 * @param {unknown} value
 * @returns {value is BigUint64Array}
 */
export function isBigUint64Array(value) {
  return getTypedArrayPrototypeSybolToStringTag.call(value) === 'BigUint64Array';
}