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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/viem/_cjs/utils

Просмотр файла: observe.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.cleanupCache = exports.listenersCache = void 0;
exports.observe = observe;
exports.listenersCache = new Map();
exports.cleanupCache = new Map();
let callbackCount = 0;
function observe(observerId, callbacks, fn) {
    const callbackId = ++callbackCount;
    const getListeners = () => exports.listenersCache.get(observerId) || [];
    const unsubscribe = () => {
        const listeners = getListeners();
        exports.listenersCache.set(observerId, listeners.filter((cb) => cb.id !== callbackId));
    };
    const unwatch = () => {
        const listeners = getListeners();
        if (!listeners.some((cb) => cb.id === callbackId))
            return;
        const cleanup = exports.cleanupCache.get(observerId);
        if (listeners.length === 1 && cleanup) {
            const p = cleanup();
            if (p instanceof Promise)
                p.catch(() => { });
        }
        unsubscribe();
    };
    const listeners = getListeners();
    exports.listenersCache.set(observerId, [
        ...listeners,
        { id: callbackId, fns: callbacks },
    ]);
    if (listeners && listeners.length > 0)
        return unwatch;
    const emit = {};
    for (const key in callbacks) {
        emit[key] = ((...args) => {
            const listeners = getListeners();
            if (listeners.length === 0)
                return;
            for (const listener of listeners)
                listener.fns[key]?.(...args);
        });
    }
    const cleanup = fn(emit);
    if (typeof cleanup === 'function')
        exports.cleanupCache.set(observerId, cleanup);
    return unwatch;
}
//# sourceMappingURL=observe.js.map

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