19 lines
488 B
JavaScript
19 lines
488 B
JavaScript
const Promise = require('any-promise')
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const assert = require('assert')
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module.exports = each
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// apply a function to all values
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// should only be used for side effects
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// (fn) -> prom
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function each (fn) {
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assert.equal(typeof fn, 'function')
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return function (arr) {
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arr = Array.isArray(arr) ? arr : [arr]
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return arr.reduce(function (prev, curr, i) {
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return prev.then(function () { return fn(curr, i, arr.length) })
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}, Promise.resolve()).then(function () {})
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}
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}
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