cross-origin-client/lib/index.js

A client library for secure cross-origin communication using the postMessage API.

var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/index.ts
var src_exports = {};
__export(src_exports, {
  CrossOriginClient: () => CrossOriginClient
});
module.exports = __toCommonJS(src_exports);

// 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;
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  CrossOriginClient
});