@wordpress/compose/build/utils/observable-map/index.js

WordPress higher-order components (HOCs).

"use strict";
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);

// packages/compose/src/utils/observable-map/index.ts
var observable_map_exports = {};
__export(observable_map_exports, {
  observableMap: () => observableMap
});
module.exports = __toCommonJS(observable_map_exports);
function observableMap() {
  const map = /* @__PURE__ */ new Map();
  const listeners = /* @__PURE__ */ new Map();
  function callListeners(name) {
    const list = listeners.get(name);
    if (!list) {
      return;
    }
    for (const listener of list) {
      listener();
    }
  }
  return {
    get(name) {
      return map.get(name);
    },
    set(name, value) {
      map.set(name, value);
      callListeners(name);
    },
    delete(name) {
      map.delete(name);
      callListeners(name);
    },
    subscribe(name, listener) {
      let list = listeners.get(name);
      if (!list) {
        list = /* @__PURE__ */ new Set();
        listeners.set(name, list);
      }
      list.add(listener);
      return () => {
        list.delete(listener);
        if (list.size === 0) {
          listeners.delete(name);
        }
      };
    }
  };
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  observableMap
});
//# sourceMappingURL=index.js.map