/opt/canhelp/node_modules/nanostores/deep-map
Edit: /opt/canhelp/node_modules/nanostores/deep-map/path.js (1413B)
export function getPath(obj, path) {
let allKeys = getAllKeysFromPath(path)
let res = obj
for (let key of allKeys) {
if (res === undefined) {
break
}
res = res[key]
}
return res
}
export function setPath(obj, path, value) {
return setByKey(obj != null ? obj : {}, getAllKeysFromPath(path), value)
}
export function setByKey(obj, splittedKeys, value) {
let key = splittedKeys[0]
let copy = Array.isArray(obj) ? [...obj] : { ...obj }
if (splittedKeys.length === 1) {
if (value === undefined) {
if (Array.isArray(copy)) {
copy.splice(key, 1)
} else {
delete copy[key]
}
} else {
copy[key] = value
}
return copy
}
ensureKey(copy, key, splittedKeys[1])
copy[key] = setByKey(copy[key], splittedKeys.slice(1), value)
return copy
}
const ARRAY_INDEX = /(.*)\[(\d+)\]/
function getAllKeysFromPath(path) {
return path.split('.').flatMap(key => getKeyAndIndicesFromKey(key))
}
function getKeyAndIndicesFromKey(key) {
if (ARRAY_INDEX.test(key)) {
let [, keyPart, index] = key.match(ARRAY_INDEX)
return [...getKeyAndIndicesFromKey(keyPart), index]
}
return [key]
}
const IS_NUMBER = /^\d+$/
function ensureKey(obj, key, nextKey) {
if (key in obj) {
return
}
let isNum = IS_NUMBER.test(nextKey)
if (isNum) {
obj[key] = Array(parseInt(nextKey, 10) + 1)
} else {
obj[key] = {}
}
}