68 lines
1.8 KiB
JavaScript
68 lines
1.8 KiB
JavaScript
/**
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* @module globals
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*/
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/* eslint-env browser */
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export const Uint8Array_ = Uint8Array
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/**
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* @param {Array<number>} arr
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* @return {ArrayBuffer}
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*/
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export const createArrayBufferFromArray = arr => new Uint8Array_(arr).buffer
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export const createUint8ArrayFromLen = len => new Uint8Array_(len)
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/**
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* Create Uint8Array with initial content from buffer
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*/
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export const createUint8ArrayFromBuffer = (buffer, byteOffset, length) => new Uint8Array_(buffer, byteOffset, length)
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/**
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* Create Uint8Array with initial content from buffer
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*/
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export const createUint8ArrayFromArrayBuffer = arraybuffer => new Uint8Array_(arraybuffer)
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export const createArrayFromArrayBuffer = arraybuffer => Array.from(createUint8ArrayFromArrayBuffer(arraybuffer))
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export const createPromise = f => new Promise(f)
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export const createMap = () => new Map()
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export const createSet = () => new Set()
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/**
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* `Promise.all` wait for all promises in the array to resolve and return the result
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* @param {Array<Promise<any>>} arrp
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* @return {any}
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*/
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export const pall = arrp => Promise.all(arrp)
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export const preject = reason => Promise.reject(reason)
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export const presolve = res => Promise.resolve(res)
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export const until = (timeout, check) => createPromise((resolve, reject) => {
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const hasTimeout = timeout > 0
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const untilInterval = () => {
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if (check()) {
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clearInterval(intervalHandle)
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resolve()
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} else if (hasTimeout) {
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timeout -= 10
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if (timeout < 0) {
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clearInterval(intervalHandle)
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reject(error('Timeout'))
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}
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}
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}
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const intervalHandle = setInterval(untilInterval, 10)
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})
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export const error = description => new Error(description)
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export const max = (a, b) => a > b ? a : b
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/**
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* @param {number} t Time to wait
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* @return {Promise} Promise that is resolved after t ms
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*/
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export const wait = t => createPromise(r => setTimeout(r, t))
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