Jakob Linskeseder
99 lines
2.2 KiB
JavaScript
99 lines
2.2 KiB
JavaScript
const escape = {
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'&': '&',
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'<': '<',
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'>': '>',
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'"': '"',
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"'": ''',
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'`': '`',
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'=': '=',
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};
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const badChars = /[&<>"'`=]/g,
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possible = /[&<>"'`=]/;
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function escapeChar(chr) {
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return escape[chr];
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}
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export function extend(obj /* , ...source */) {
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for (let i = 1; i < arguments.length; i++) {
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for (let key in arguments[i]) {
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if (Object.prototype.hasOwnProperty.call(arguments[i], key)) {
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obj[key] = arguments[i][key];
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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 let toString = Object.prototype.toString;
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// Sourced from lodash
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// https://github.com/lodash/lodash/blob/4.17.21/LICENSE
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export function isFunction(value) {
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return typeof value === 'function';
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}
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function testTag(name) {
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const tag = '[object ' + name + ']';
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return function (value) {
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return value && typeof value === 'object'
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? toString.call(value) === tag
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: false;
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};
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}
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export const isArray = Array.isArray;
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export const isMap = testTag('Map');
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export const isSet = testTag('Set');
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// Older IE versions do not directly support indexOf so we must implement our own, sadly.
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export function indexOf(array, value) {
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for (let i = 0, len = array.length; i < len; i++) {
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if (array[i] === value) {
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return i;
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}
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}
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return -1;
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}
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export function escapeExpression(string) {
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if (typeof string !== 'string') {
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// don't escape SafeStrings, since they're already safe
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if (string && string.toHTML) {
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return string.toHTML();
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} else if (string == null) {
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return '';
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} else if (!string) {
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return string + '';
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}
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// Force a string conversion as this will be done by the append regardless and
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// the regex test will do this transparently behind the scenes, causing issues if
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// an object's to string has escaped characters in it.
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string = '' + string;
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}
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if (!possible.test(string)) {
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return string;
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}
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return string.replace(badChars, escapeChar);
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}
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export function isEmpty(value) {
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if (!value && value !== 0) {
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return true;
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} else if (isArray(value) && value.length === 0) {
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return true;
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} else {
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return false;
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}
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}
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export function createFrame(object) {
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let frame = extend({}, object);
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frame._parent = object;
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return frame;
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}
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