53 lines
972 B
JavaScript
53 lines
972 B
JavaScript
// Some functions from Lodash that are a bit heavyweight and which
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// we can just do in idiomatic ES2015+
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export function get (obj, keys, defaultValue) {
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for (const key of keys) {
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if (obj && key in obj) {
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obj = obj[key]
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} else {
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return defaultValue
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}
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}
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return obj
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}
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export function pickBy (obj, predicate) {
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const res = {}
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for (const [key, value] of Object.entries(obj)) {
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if (predicate(value, key)) {
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res[key] = value
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}
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}
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return res
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}
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export function padStart (string, length, chars) {
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while (string.length < length) {
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string = chars + string
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}
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return string
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}
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export function sum (list) {
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let total = 0
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for (const item of list) {
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total += item
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}
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return total
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}
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export function times (n, func) {
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const res = []
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for (let i = 0; i < n; i++) {
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res.push(func(i))
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}
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return res
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}
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export function noop () {}
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export function cloneDeep (obj) {
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return JSON.parse(JSON.stringify(obj))
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}
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