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utils.js
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utils.js
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// http://lea.verou.me/2016/12/resolve-promises-externally-with-this-one-weird-trick/
export function defer() {
let res;
let rej;
const promise = new Promise((resolve, reject) => {
res = resolve;
rej = reject;
});
promise.resolve = res;
promise.reject = rej;
return promise;
}
export function makeString(object) {
if (object == null) return '';
/* eslint prefer-template: 0 */
return '' + object;
}
export function copy(a, s, t) {
a.forEach((m) => {
if (s[m]) t[m] = s[m];
});
}
function getLastOfPath(object, path, Empty) {
function cleanKey(key) {
return key && key.indexOf('###') > -1 ? key.replace(/###/g, '.') : key;
}
function canNotTraverseDeeper() {
return !object || typeof object === 'string';
}
const stack = typeof path !== 'string' ? [].concat(path) : path.split('.');
while (stack.length > 1) {
if (canNotTraverseDeeper()) return {};
const key = cleanKey(stack.shift());
if (!object[key] && Empty) object[key] = new Empty();
// prevent prototype pollution
if (Object.prototype.hasOwnProperty.call(object, key)) {
object = object[key];
} else {
object = {};
}
}
if (canNotTraverseDeeper()) return {};
return {
obj: object,
k: cleanKey(stack.shift()),
};
}
export function setPath(object, path, newValue) {
const { obj, k } = getLastOfPath(object, path, Object);
obj[k] = newValue;
}
export function pushPath(object, path, newValue, concat) {
const { obj, k } = getLastOfPath(object, path, Object);
obj[k] = obj[k] || [];
if (concat) obj[k] = obj[k].concat(newValue);
if (!concat) obj[k].push(newValue);
}
export function getPath(object, path) {
const { obj, k } = getLastOfPath(object, path);
if (!obj) return undefined;
return obj[k];
}
export function getPathWithDefaults(data, defaultData, key) {
const value = getPath(data, key);
if (value !== undefined) {
return value;
}
// Fallback to default values
return getPath(defaultData, key);
}
export function deepExtend(target, source, overwrite) {
/* eslint no-restricted-syntax: 0 */
for (const prop in source) {
if (prop !== '__proto__' && prop !== 'constructor') {
if (prop in target) {
// If we reached a leaf string in target or source then replace with source or skip depending on the 'overwrite' switch
if (
typeof target[prop] === 'string' ||
target[prop] instanceof String ||
typeof source[prop] === 'string' ||
source[prop] instanceof String
) {
if (overwrite) target[prop] = source[prop];
} else {
deepExtend(target[prop], source[prop], overwrite);
}
} else {
target[prop] = source[prop];
}
}
}
return target;
}
export function regexEscape(str) {
/* eslint no-useless-escape: 0 */
return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
}
/* eslint-disable */
var _entityMap = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": ''',
'/': '/',
};
/* eslint-enable */
export function escape(data) {
if (typeof data === 'string') {
return data.replace(/[&<>"'\/]/g, (s) => _entityMap[s]);
}
return data;
}
export const isIE10 =
typeof window !== 'undefined' &&
window.navigator &&
window.navigator.userAgent &&
window.navigator.userAgent.indexOf('MSIE') > -1;
const chars = [' ', ',', '?', '!', ';'];
export function looksLikeObjectPath(key, nsSeparator, keySeparator) {
nsSeparator = nsSeparator || '';
keySeparator = keySeparator || '';
const possibleChars = chars.filter(
(c) => nsSeparator.indexOf(c) < 0 && keySeparator.indexOf(c) < 0,
);
if (possibleChars.length === 0) return true;
const r = new RegExp(`(${possibleChars.map((c) => (c === '?' ? '\\?' : c)).join('|')})`);
let matched = !r.test(key);
if (!matched) {
const ki = key.indexOf(keySeparator);
if (ki > 0 && !r.test(key.substring(0, ki))) {
matched = true;
}
}
return matched;
}