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.
90 lines • 4.82 kB
JavaScript
"use strict";
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
if (kind === "m") throw new TypeError("Private method is not writable");
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _MutationListener_window, _MutationListener_observer, _MutationListener_callback, _MutationListener_records, _MutationListener_immediate;
Object.defineProperty(exports, "__esModule", { value: true });
/**
* Mutation Observer Listener.
*/
class MutationListener {
/**
* Constructor.
*
* @param init Options.
* @param init.window Window.
* @param init.options Options.
* @param init.target Target.
* @param init.observer Observer.
* @param init.callback Callback.
*/
constructor(init) {
_MutationListener_window.set(this, void 0);
_MutationListener_observer.set(this, void 0);
_MutationListener_callback.set(this, void 0);
_MutationListener_records.set(this, []);
_MutationListener_immediate.set(this, null);
this.options = init.options;
this.target = init.target;
__classPrivateFieldSet(this, _MutationListener_window, init.window, "f");
__classPrivateFieldSet(this, _MutationListener_observer, init.observer, "f");
__classPrivateFieldSet(this, _MutationListener_callback, init.callback, "f");
}
/**
* Reports mutations.
*
* @param record Record.
*/
report(record) {
if (!__classPrivateFieldGet(this, _MutationListener_records, "f")) {
return;
}
__classPrivateFieldGet(this, _MutationListener_records, "f").push(record);
if (__classPrivateFieldGet(this, _MutationListener_immediate, "f")) {
__classPrivateFieldGet(this, _MutationListener_window, "f").cancelAnimationFrame(__classPrivateFieldGet(this, _MutationListener_immediate, "f"));
}
__classPrivateFieldSet(this, _MutationListener_immediate, __classPrivateFieldGet(this, _MutationListener_window, "f").requestAnimationFrame(() => {
const records = __classPrivateFieldGet(this, _MutationListener_records, "f");
if (records?.length > 0) {
__classPrivateFieldSet(this, _MutationListener_records, [], "f");
__classPrivateFieldGet(this, _MutationListener_callback, "f").call(this, records, __classPrivateFieldGet(this, _MutationListener_observer, "f"));
}
}), "f");
}
/**
* Destroys the listener.
*/
takeRecords() {
if (__classPrivateFieldGet(this, _MutationListener_immediate, "f")) {
__classPrivateFieldGet(this, _MutationListener_window, "f").cancelAnimationFrame(__classPrivateFieldGet(this, _MutationListener_immediate, "f"));
}
const records = __classPrivateFieldGet(this, _MutationListener_records, "f");
__classPrivateFieldSet(this, _MutationListener_records, [], "f");
return records;
}
/**
* Destroys the listener.
*/
destroy() {
if (__classPrivateFieldGet(this, _MutationListener_immediate, "f")) {
__classPrivateFieldGet(this, _MutationListener_window, "f").cancelAnimationFrame(__classPrivateFieldGet(this, _MutationListener_immediate, "f"));
}
this.options = null;
this.target = null;
__classPrivateFieldSet(this, _MutationListener_observer, null, "f");
__classPrivateFieldSet(this, _MutationListener_callback, null, "f");
__classPrivateFieldSet(this, _MutationListener_immediate, null, "f");
__classPrivateFieldSet(this, _MutationListener_records, null, "f");
}
}
_MutationListener_window = new WeakMap(), _MutationListener_observer = new WeakMap(), _MutationListener_callback = new WeakMap(), _MutationListener_records = new WeakMap(), _MutationListener_immediate = new WeakMap();
exports.default = MutationListener;
//# sourceMappingURL=MutationListener.cjs.map