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"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.globalValue = void 0; var version = _interopRequireWildcard(require("./internal/version.js")); function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); } /** * The `GlobalValue` module ensures that a single instance of a value is created globally, * even when modules are imported multiple times (e.g., due to mixing CommonJS and ESM builds) * or during hot-reloading in development environments like Next.js or Remix. * * It achieves this by using a versioned global store, identified by a unique `Symbol` tied to * the current version of the `effect` library. The store holds values that are keyed by an identifier, * allowing the reuse of previously computed instances across imports or reloads. * * This pattern is particularly useful in scenarios where frequent reloading can cause services or * single-instance objects to be recreated unnecessarily, such as in development environments with hot-reloading. * * @since 2.0.0 */ const globalStoreId = `effect/GlobalValue/globalStoreId/${/*#__PURE__*/version.getCurrentVersion()}`; let globalStore; /** * Retrieves or computes a global value associated with the given `id`. If the value for this `id` * has already been computed, it will be returned from the global store. If it does not exist yet, * the provided `compute` function will be executed to compute the value, store it, and then return it. * * This ensures that even in cases where the module is imported multiple times (e.g., in mixed environments * like CommonJS and ESM, or during hot-reloading in development), the value is computed only once and reused * thereafter. * * @example * ```ts * import { globalValue } from "effect/GlobalValue" * * // This cache will persist as long as the module is running, * // even if reloaded or imported elsewhere * const myCache = globalValue( * Symbol.for("myCache"), * () => new WeakMap<object, number>() * ) * ``` * * @since 2.0.0 */ const globalValue = (id, compute) => { if (!globalStore) { // @ts-expect-error globalThis[globalStoreId] ??= new Map(); // @ts-expect-error globalStore = globalThis[globalStoreId]; } if (!globalStore.has(id)) { globalStore.set(id, compute()); } return globalStore.get(id); }; exports.globalValue = globalValue; //# sourceMappingURL=GlobalValue.js.map