35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
'use strict';
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const {MAIN, THREAD} = require('./channel.js');
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const $coincident = (require('./index.js'));
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const main = (require('./window/main.js'));
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const thread = (require('./window/thread.js'));
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const Worker = (require('./shared/worker.js'));
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const proxies = new WeakMap;
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/**
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* @typedef {object} Coincident
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* @property {ProxyHandler<globalThis>} proxy
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* @property {ProxyHandler<Window>} window
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* @property {(value: any) => boolean} isWindowProxy
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*/
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/**
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* Create once a `Proxy` able to orchestrate synchronous `postMessage` out of the box.
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* In workers, returns a `{proxy, window, isWindowProxy}` namespace to reach main globals synchronously.
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* @param {Worker | globalThis} self the context in which code should run
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* @returns {ProxyHandler<Worker> | Coincident}
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*/
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const coincident = (self, ...args) => {
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const proxy = $coincident(self, ...args);
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if (!proxies.has(proxy)) {
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const util = self instanceof Worker ? main : thread;
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proxies.set(proxy, util.call(args.at(0), proxy, MAIN, THREAD));
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}
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return proxies.get(proxy);
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}
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coincident.transfer = $coincident.transfer;
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module.exports = coincident;
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