45 lines
935 B
JavaScript
45 lines
935 B
JavaScript
const arr = []
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const each = arr.forEach
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const slice = arr.slice
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export function defaults (obj) {
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each.call(slice.call(arguments, 1), (source) => {
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if (source) {
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for (const prop in source) {
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if (obj[prop] === undefined) obj[prop] = source[prop]
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}
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}
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})
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return obj
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}
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export function hasXMLHttpRequest () {
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return (typeof XMLHttpRequest === 'function' || typeof XMLHttpRequest === 'object')
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}
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/**
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* Determine whether the given `maybePromise` is a Promise.
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*
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* @param {*} maybePromise
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*
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* @returns {Boolean}
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*/
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function isPromise (maybePromise) {
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return !!maybePromise && typeof maybePromise.then === 'function'
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}
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/**
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* Convert any value to a Promise than will resolve to this value.
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*
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* @param {*} maybePromise
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*
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* @returns {Promise}
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*/
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export function makePromise (maybePromise) {
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if (isPromise(maybePromise)) {
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return maybePromise
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}
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return Promise.resolve(maybePromise)
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}
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