@wordpress/data
Version:
Data module for WordPress.
43 lines (42 loc) • 953 B
JavaScript
// packages/data/src/utils/emitter.ts
function createEmitter() {
let isPaused = false;
let isPending = false;
const listeners = /* @__PURE__ */ new Set();
const notifyListeners = () => (
// We use Array.from to clone the listeners Set
// This ensures that we don't run a listener
// that was added as a response to another listener.
Array.from(listeners).forEach((listener) => listener())
);
return {
get isPaused() {
return isPaused;
},
subscribe(listener) {
listeners.add(listener);
return () => listeners.delete(listener);
},
pause() {
isPaused = true;
},
resume() {
isPaused = false;
if (isPending) {
isPending = false;
notifyListeners();
}
},
emit() {
if (isPaused) {
isPending = true;
return;
}
notifyListeners();
}
};
}
export {
createEmitter
};
//# sourceMappingURL=emitter.js.map