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module-worker

README.md

example.js

document.body.innerHTML = `
	<pre id="history"></pre>
	<form>
	<input id="message" type="text">
	<button id="send">Send Message</button>
	</form>
	<p>Computing fibonacci without worker:</p>
	<input id="fib1" type="number">
	<pre id="output1"></pre>
	<p>Computing fibonacci with worker:</p>
	<input id="fib2" type="number">
	<pre id="output2"></pre>
`;

const history = document.getElementById("history");
const message = document.getElementById("message");
const send = document.getElementById("send");
const fib1 = document.getElementById("fib1");
const output1 = document.getElementById("output1");
const fib2 = document.getElementById("fib2");
const output2 = document.getElementById("output2");

/// CHAT with shared worker ///

const chatWorker = new SharedWorker(
	new URL("./chat-worker.js", import.meta.url),
	{
		name: "chat",
		type: "module"
	}
);

let historyTimeout;
const scheduleUpdateHistory = () => {
	clearTimeout(historyTimeout);
	historyTimeout = setTimeout(() => {
		chatWorker.port.postMessage({ type: "history" });
	}, 1000);
};
scheduleUpdateHistory();

const from = `User ${Math.floor(Math.random() * 10000)}`;

send.addEventListener("click", e => {
	chatWorker.port.postMessage({
		type: "message",
		content: message.value,
		from
	});
	message.value = "";
	message.focus();
	e.preventDefault();
});

chatWorker.port.onmessage = event => {
	const msg = event.data;
	switch (msg.type) {
		case "history":
			history.innerText = msg.history.join("\n");
			scheduleUpdateHistory();
			break;
	}
};

/// FIBONACCI without worker ///

fib1.addEventListener("change", async () => {
	try {
		const value = parseInt(fib1.value, 10);
		const { fibonacci } = await import("./fibonacci");
		const result = fibonacci(value);
		output1.innerText = `fib(${value}) = ${result}`;
	} catch (e) {
		output1.innerText = e.message;
	}
});

/// FIBONACCI with worker ///

const fibWorker = new Worker(new URL("./fib-worker.js", import.meta.url), {
	name: "fibonacci",
	type: "module"
	/* webpackEntryOptions: { filename: "workers/[name].js" } */
});

fib2.addEventListener("change", () => {
	try {
		const value = parseInt(fib2.value, 10);
		fibWorker.postMessage(`${value}`);
	} catch (e) {
		output2.innerText = e.message;
	}
});

fibWorker.onmessage = event => {
	output2.innerText = event.data;
};

fib-worker.js

onmessage = async event => {
	const { fibonacci } = await import("./fibonacci");
	const value = JSON.parse(event.data);
	postMessage(`fib(${value}) = ${fibonacci(value)}`);
};

fibonacci.js

export function fibonacci(n) {
	return n < 1 ? 0 : n <= 2 ? 1 : fibonacci(n - 1) + fibonacci(n - 2);
}

chat-worker.js

onconnect = function (e) {
	for (const port of e.ports) {
		port.onmessage = async event => {
			const msg = event.data;
			switch (msg.type) {
				case "message":
					const { add } = await import("./chat-module");
					add(msg.content, msg.from);
				// fallthrough
				case "history":
					const { history } = await import("./chat-module");
					port.postMessage({
						type: "history",
						history
					});
					break;
			}
		};
	}
};

chat-module.js

export const history = [];

export const add = (content, from) => {
	if (history.length > 10) history.shift();
	history.push(`${from}: ${content}`);
};

dist/main.js

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let __webpack_exports__ = {};
/*!********************!*\
  !*** ./example.js ***!
  \********************/
/*! unknown exports (runtime-defined) */
/*! runtime requirements: __webpack_require__.p, __webpack_require__.b, __webpack_require__.u, __webpack_require__.e, __webpack_require__, __webpack_require__.* */
document.body.innerHTML = `
	<pre id="history"></pre>
	<form>
	<input id="message" type="text">
	<button id="send">Send Message</button>
	</form>
	<p>Computing fibonacci without worker:</p>
	<input id="fib1" type="number">
	<pre id="output1"></pre>
	<p>Computing fibonacci with worker:</p>
	<input id="fib2" type="number">
	<pre id="output2"></pre>
`;

const history = document.getElementById("history");
const message = document.getElementById("message");
const send = document.getElementById("send");
const fib1 = document.getElementById("fib1");
const output1 = document.getElementById("output1");
const fib2 = document.getElementById("fib2");
const output2 = document.getElementById("output2");

/// CHAT with shared worker ///

const chatWorker = new SharedWorker(
	new URL(/* worker import */ __webpack_require__.p + __webpack_require__.u(377), __webpack_require__.b),
	{
		name: "chat",
		type: "module"
	}
);

let historyTimeout;
const scheduleUpdateHistory = () => {
	clearTimeout(historyTimeout);
	historyTimeout = setTimeout(() => {
		chatWorker.port.postMessage({ type: "history" });
	}, 1000);
};
scheduleUpdateHistory();

const from = `User ${Math.floor(Math.random() * 10000)}`;

send.addEventListener("click", e => {
	chatWorker.port.postMessage({
		type: "message",
		content: message.value,
		from
	});
	message.value = "";
	message.focus();
	e.preventDefault();
});

chatWorker.port.onmessage = event => {
	const msg = event.data;
	switch (msg.type) {
		case "history":
			history.innerText = msg.history.join("\n");
			scheduleUpdateHistory();
			break;
	}
};

/// FIBONACCI without worker ///

fib1.addEventListener("change", async () => {
	try {
		const value = parseInt(fib1.value, 10);
		const { fibonacci } = await __webpack_require__.e(/*! import() */ 129).then(__webpack_require__.bind(__webpack_require__, /*! ./fibonacci */ 3));
		const result = fibonacci(value);
		output1.innerText = `fib(${value}) = ${result}`;
	} catch (e) {
		output1.innerText = e.message;
	}
});

/// FIBONACCI with worker ///

const fibWorker = new Worker(new URL(/* worker import */ __webpack_require__.p + __webpack_require__.u(721), __webpack_require__.b), {
	name: "fibonacci",
	type: "module"
	/* webpackEntryOptions: { filename: "workers/[name].js" } */
});

fib2.addEventListener("change", () => {
	try {
		const value = parseInt(fib2.value, 10);
		fibWorker.postMessage(`${value}`);
	} catch (e) {
		output2.innerText = e.message;
	}
});

fibWorker.onmessage = event => {
	output2.innerText = event.data;
};

dist/chat.js

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let __webpack_exports__ = {};
/*!************************!*\
  !*** ./chat-worker.js ***!
  \************************/
/*! unknown exports (runtime-defined) */
/*! runtime requirements: __webpack_require__.e, __webpack_require__, __webpack_require__.* */
onconnect = function (e) {
	for (const port of e.ports) {
		port.onmessage = async event => {
			const msg = event.data;
			switch (msg.type) {
				case "message":
					const { add } = await __webpack_require__.e(/*! import() */ 936).then(__webpack_require__.bind(__webpack_require__, /*! ./chat-module */ 4));
					add(msg.content, msg.from);
				// fallthrough
				case "history":
					const { history } = await __webpack_require__.e(/*! import() */ 936).then(__webpack_require__.bind(__webpack_require__, /*! ./chat-module */ 4));
					port.postMessage({
						type: "history",
						history
					});
					break;
			}
		};
	}
};
var e={};const t={};function o(r){const s=t[r];if(void 0!==s)return s.exports;const n=t[r]={exports:{}};return e[r](n,n.exports,o),n.exports}o.m=e,o.d=(e,t)=>{if(Array.isArray(t))for(var r=0;r<t.length;){var s=t[r++],n=t[r++];o.o(e,s)?0===n&&r++:0===n?Object.defineProperty(e,s,{enumerable:!0,value:t[r++]}):Object.defineProperty(e,s,{enumerable:!0,get:n})}else for(var s in t)o.o(t,s)&&!o.o(e,s)&&Object.defineProperty(e,s,{enumerable:!0,get:t[s]})},o.f={},o.e=e=>Promise.all(Object.keys(o.f).reduce((t,r)=>(o.f[r](e,t),t),[])),o.u=e=>e+".js",o.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),o.p="/dist/",(()=>{const e={377:0},t=t=>{let{__webpack_esm_ids__:r,__webpack_esm_modules__:s,__webpack_esm_runtime__:n}=t;var a,i,c=0;for(a in s)o.o(s,a)&&(o.m[a]=s[a]);for(n&&n(o);c<r.length;c++)i=r[c],o.o(e,i)&&e[i]&&e[i][0](),e[r[c]]=0};o.f.j=(r,s)=>{let n=o.o(e,r)?e[r]:void 0;if(0!==n)if(n)s.push(n[1]);else{let a=import(o.p+o.u(r)).then(t,t=>{throw 0!==e[r]&&(e[r]=void 0),t});a=Promise.race([a,new Promise(t=>n=e[r]=[t])]),s.push(n[1]=a)}}})(),onconnect=function(e){for(const t of e.ports)t.onmessage=async e=>{const r=e.data;switch(r.type){case"message":const{add:e}=await o.e(936).then(o.bind(o,936));e(r.content,r.from);case"history":const{history:s}=await o.e(936).then(o.bind(o,936));t.postMessage({type:"history",history:s})}}};

dist/workers/fibonacci.js

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let __webpack_exports__ = {};
/*!***********************!*\
  !*** ./fib-worker.js ***!
  \***********************/
/*! unknown exports (runtime-defined) */
/*! runtime requirements: __webpack_require__.e, __webpack_require__, __webpack_require__.* */
onmessage = async event => {
	const { fibonacci } = await __webpack_require__.e(/*! import() */ 129).then(__webpack_require__.bind(__webpack_require__, /*! ./fibonacci */ 3));
	const value = JSON.parse(event.data);
	postMessage(`fib(${value}) = ${fibonacci(value)}`);
};
var e={};const r={};function o(t){const s=r[t];if(void 0!==s)return s.exports;const n=r[t]={exports:{}};return e[t](n,n.exports,o),n.exports}o.m=e,o.d=(e,r)=>{if(Array.isArray(r))for(var t=0;t<r.length;){var s=r[t++],n=r[t++];o.o(e,s)?0===n&&t++:0===n?Object.defineProperty(e,s,{enumerable:!0,value:r[t++]}):Object.defineProperty(e,s,{enumerable:!0,get:n})}else for(var s in r)o.o(r,s)&&!o.o(e,s)&&Object.defineProperty(e,s,{enumerable:!0,get:r[s]})},o.f={},o.e=e=>Promise.all(Object.keys(o.f).reduce((r,t)=>(o.f[t](e,r),r),[])),o.u=e=>e+".js",o.o=(e,r)=>Object.prototype.hasOwnProperty.call(e,r),o.p="/dist/",(()=>{const e={721:0},r=r=>{let{__webpack_esm_ids__:t,__webpack_esm_modules__:s,__webpack_esm_runtime__:n}=r;var a,i,c=0;for(a in s)o.o(s,a)&&(o.m[a]=s[a]);for(n&&n(o);c<t.length;c++)i=t[c],o.o(e,i)&&e[i]&&e[i][0](),e[t[c]]=0};o.f.j=(t,s)=>{let n=o.o(e,t)?e[t]:void 0;if(0!==n)if(n)s.push(n[1]);else{let a=import(o.p+o.u(t)).then(r,r=>{throw 0!==e[t]&&(e[t]=void 0),r});a=Promise.race([a,new Promise(r=>n=e[t]=[r])]),s.push(n[1]=a)}}})(),onmessage=async e=>{const{fibonacci:r}=await o.e(129).then(o.bind(o,129)),t=JSON.parse(e.data);postMessage(`fib(${t}) = ${r(t)}`)};

dist/129.js

export const __webpack_esm_id__ = 129;
export const __webpack_esm_ids__ = [129];
export const __webpack_esm_modules__ = {

/***/ 3
/*!**********************!*\
  !*** ./fibonacci.js ***!
  \**********************/
/*! namespace exports */
/*! export fibonacci [provided] [no usage info] [missing usage info prevents renaming] */
/*! other exports [not provided] [no usage info] */
/*! runtime requirements: __webpack_require__.r, __webpack_exports__, __webpack_require__.d, __webpack_require__.* */
(__unused_webpack_module, __webpack_exports__, __webpack_require__) {

__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   fibonacci: () => (/* binding */ fibonacci)
/* harmony export */ });
function fibonacci(n) {
	return n < 1 ? 0 : n <= 2 ? 1 : fibonacci(n - 1) + fibonacci(n - 2);
}


/***/ }

};

Info

Unoptimized

asset main.js 9.44 KiB [emitted] [javascript module] (name: main)
asset chat.js 7.35 KiB [emitted] [javascript module] (name: chat)
asset workers/fibonacci.js 6.99 KiB [emitted] [javascript module] (name: fibonacci)
asset 936.js 1.04 KiB [emitted] [javascript module]
asset 129.js 881 bytes [emitted] [javascript module]
chunk (runtime: 9a81d90cfd0dfd13d748, main) 129.js 103 bytes [rendered]
  > ./fibonacci ./example.js 70:30-51
  > ./fibonacci ./fib-worker.js 2:29-50
  ./fibonacci.js 103 bytes [built] [code generated]
    [exports: fibonacci]
    [used exports unknown]
    import() ./fibonacci ./example.js 70:30-51
    import() ./fibonacci ./fib-worker.js 2:29-50
chunk (runtime: 1fad8bf8de78b0a77bfd) chat.js (chat) 442 bytes (javascript) 3.56 KiB (runtime) [entry] [rendered]
  > ./example.js 25:19-31:1
  runtime modules 3.56 KiB 7 modules
  ./chat-worker.js 442 bytes [built] [code generated]
    [used exports unknown]
    new Worker() ./chat-worker.js ./example.js 25:19-31:1
chunk (runtime: 9a81d90cfd0dfd13d748) workers/fibonacci.js (fibonacci) 176 bytes (javascript) 3.56 KiB (runtime) [entry] [rendered]
  > ./example.js 80:18-84:2
  runtime modules 3.56 KiB 7 modules
  ./fib-worker.js 176 bytes [built] [code generated]
    [used exports unknown]
    new Worker() ./fib-worker.js ./example.js 80:18-84:2
chunk (runtime: main) main.js (main) 2.25 KiB (javascript) 3.73 KiB (runtime) [entry] [rendered]
  > ./example.js main
  runtime modules 3.73 KiB 7 modules
  ./example.js 2.25 KiB [built] [code generated]
    [used exports unknown]
    entry ./example.js main
chunk (runtime: 1fad8bf8de78b0a77bfd) 936.js 152 bytes [rendered]
  > ./chat-module ./chat-worker.js 11:31-54
  > ./chat-module ./chat-worker.js 7:27-50
  ./chat-module.js 152 bytes [built] [code generated]
    [exports: add, history]
    [used exports unknown]
    import() ./chat-module ./chat-worker.js 7:27-50
    import() ./chat-module ./chat-worker.js 11:31-54
webpack X.X.X compiled successfully

Production mode

asset main.js 2.58 KiB [emitted] [javascript module] [minimized] (name: main)
asset chat.js 1.31 KiB [emitted] [javascript module] [minimized] (name: chat)
asset workers/fibonacci.js 1.15 KiB [emitted] [javascript module] [minimized] (name: fibonacci)
asset 936.js 221 bytes [emitted] [javascript module] [minimized]
asset 129.js 199 bytes [emitted] [javascript module] [minimized]
chunk (runtime: 9a81d90cfd0dfd13d748, main) 129.js 103 bytes [rendered]
  > ./fibonacci ./fib-worker.js 2:29-50
  > ./fibonacci ./example.js 70:30-51
  ./fibonacci.js 103 bytes [built] [code generated]
    [exports: fibonacci]
    [all exports used]
    import() ./fibonacci ./example.js 70:30-51
    import() ./fibonacci ./fib-worker.js 2:29-50
chunk (runtime: 1fad8bf8de78b0a77bfd) chat.js (chat) 442 bytes (javascript) 3.29 KiB (runtime) [entry] [rendered]
  > ./example.js 25:19-31:1
  runtime modules 3.29 KiB 6 modules
  ./chat-worker.js 442 bytes [built] [code generated]
    [no exports used]
    new Worker() ./chat-worker.js ./example.js 25:19-31:1
chunk (runtime: 9a81d90cfd0dfd13d748) workers/fibonacci.js (fibonacci) 176 bytes (javascript) 3.29 KiB (runtime) [entry] [rendered]
  > ./example.js 80:18-84:2
  runtime modules 3.29 KiB 6 modules
  ./fib-worker.js 176 bytes [built] [code generated]
    [no exports used]
    new Worker() ./fib-worker.js ./example.js 80:18-84:2
chunk (runtime: main) main.js (main) 2.25 KiB (javascript) 3.46 KiB (runtime) [entry] [rendered]
  > ./example.js main
  runtime modules 3.46 KiB 6 modules
  ./example.js 2.25 KiB [built] [code generated]
    [no exports used]
    entry ./example.js main
chunk (runtime: 1fad8bf8de78b0a77bfd) 936.js 152 bytes [rendered]
  > ./chat-module ./chat-worker.js 11:31-54
  > ./chat-module ./chat-worker.js 7:27-50
  ./chat-module.js 152 bytes [built] [code generated]
    [exports: add, history]
    [all exports used]
    import() ./chat-module ./chat-worker.js 7:27-50
    import() ./chat-module ./chat-worker.js 11:31-54
webpack X.X.X compiled successfully