cross-origin-client
Version:
A client library for secure cross-origin communication using the postMessage API.
35 lines (33 loc) • 946 B
JavaScript
// src/cross-origin-client.ts
var _CrossOriginClient = class _CrossOriginClient {
constructor(args) {
this.resolvePromises = /* @__PURE__ */ new Map();
if (!_CrossOriginClient.instance) {
this.trustedOrigin = args.trustedOrigin;
_CrossOriginClient.instance = this;
this.register();
}
return _CrossOriginClient.instance;
}
register() {
window.addEventListener("message", (e) => {
if (this.trustedOrigin !== e.origin) return;
const promise = this.resolvePromises.get(e.data.type);
if (promise) {
promise(e.data);
this.resolvePromises.delete(e.data.type);
}
});
}
send(event) {
return new Promise((resolve) => {
this.resolvePromises.set(event.type, resolve);
window.parent.postMessage(event, this.trustedOrigin);
});
}
};
_CrossOriginClient.instance = null;
var CrossOriginClient = _CrossOriginClient;
export {
CrossOriginClient
};