happy-dom
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Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
116 lines • 4.37 kB
JavaScript
/* eslint-disable filenames/match-exported */
import ClassMethodBinder from '../../utilities/ClassMethodBinder.js';
import * as PropertySymbol from '../../PropertySymbol.js';
import NamedNodeMap from './NamedNodeMap.js';
/**
* Named Node Map.
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap
*/
export default class NamedNodeMapProxyFactory {
/**
* Constructor.
*
* @param namedNodeMap
*/
static createProxy(namedNodeMap) {
const methodBinder = new ClassMethodBinder(this, [NamedNodeMap]);
return new Proxy(namedNodeMap, {
get: (target, property) => {
if (property === 'length') {
return namedNodeMap[PropertySymbol.items].size;
}
if (property in target || typeof property === 'symbol') {
methodBinder.bind(property);
return target[property];
}
const index = Number(property);
if (!isNaN(index)) {
return target.item(index);
}
return target.getNamedItem(property) || undefined;
},
set(target, property, newValue) {
methodBinder.bind(property);
if (typeof property === 'symbol') {
target[property] = newValue;
return true;
}
const index = Number(property);
if (isNaN(index)) {
target[property] = newValue;
}
return true;
},
deleteProperty(target, property) {
if (typeof property === 'symbol') {
delete target[property];
return true;
}
const index = Number(property);
if (isNaN(index)) {
delete target[property];
}
return true;
},
ownKeys() {
const keys = Array.from(namedNodeMap[PropertySymbol.items].keys());
for (let i = 0, max = namedNodeMap[PropertySymbol.items].size; i < max; i++) {
keys.push(String(i));
}
return keys;
},
has(target, property) {
if (typeof property === 'symbol') {
return false;
}
if (property in target || namedNodeMap[PropertySymbol.items].has(property)) {
return true;
}
const index = Number(property);
if (!isNaN(index) && index >= 0 && index < namedNodeMap[PropertySymbol.items].size) {
return true;
}
return false;
},
defineProperty(target, property, descriptor) {
methodBinder.preventBinding(property);
if (property in target) {
Object.defineProperty(target, property, descriptor);
return true;
}
return false;
},
getOwnPropertyDescriptor(target, property) {
if (property in target || typeof property === 'symbol') {
return;
}
const index = Number(property);
if (!isNaN(index)) {
if (index >= 0) {
const itemByIndex = target.item(index);
if (itemByIndex) {
return {
value: itemByIndex,
writable: false,
enumerable: true,
configurable: true
};
}
}
return;
}
const items = namedNodeMap[PropertySymbol.items].get(property);
if (items) {
return {
value: items,
writable: false,
enumerable: true,
configurable: true
};
}
}
});
}
}
//# sourceMappingURL=NamedNodeMapProxyFactory.js.map