mirror of https://github.com/sveltejs/svelte
Richard Harris
6 years ago
parent
9f0630c3fb
commit
795ca0c291
@ -0,0 +1,44 @@
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const workers = new Map();
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let uid = 1;
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export default class Bundler {
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constructor(version) {
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if (!workers.has(version)) {
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const worker = new Worker('/workers/bundler.js');
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worker.postMessage({ type: 'init', version });
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workers.set(version, worker);
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}
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this.worker = workers.get(version);
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this.handlers = new Map();
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this.worker.addEventListener('message', event => {
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const handler = this.handlers.get(event.data.id);
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if (handler) { // if no handler, was meant for a different REPL
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handler(event.data);
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this.handlers.delete(event.data.id);
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}
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});
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}
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bundle(components) {
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return new Promise(fulfil => {
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const id = uid++;
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this.handlers.set(id, fulfil);
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this.worker.postMessage({
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id,
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type: 'bundle',
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components
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});
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});
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}
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destroy() {
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this.worker.terminate();
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}
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}
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@ -1,149 +1,105 @@
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(function (){
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const importCache = {};
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function fetchImport(id) {
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return new Promise((fulfil, reject) => {
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curl([`https://bundle.run/${id}`]).then(module => {
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importCache[id] = module;
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fulfil(module);
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}, err => {
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console.error(err.stack);
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reject(new Error(`Error loading ${id} from bundle.run`));
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(function() {
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const import_cache = {};
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function fetch_import(id) {
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return new Promise((fulfil, reject) => {
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curl([`https://bundle.run/${id}`]).then(module => {
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import_cache[id] = module;
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fulfil(module);
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}, err => {
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console.error(err.stack);
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reject(new Error(`Error loading ${id} from bundle.run`));
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});
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});
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});
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}
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function fetchImports(imports, progressFunc) {
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const missingImports = imports.filter(x => !importCache[x]);
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let pendingImports = missingImports.length;
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if (missingImports.length) {
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let promise = Promise.all(
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missingImports.map(id => fetchImport(id).then(() => {
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pendingImports -= 1;
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if (progressFunc) progressFunc(pendingImports);
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}))
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);
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return promise
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} else {
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return Promise.resolve();
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}
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}
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function handleMessage(ev) {
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let { action, cmdId } = ev.data;
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const sendMessage = (payload) => parent.postMessage( { ...payload }, ev.origin);
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const sendReply = (payload) => sendMessage({ ...payload, cmdId })
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const sendOk = () => sendReply({ action: "cmdOk" });
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const sendError = (message, stack) => sendReply({ action: "cmdError", message, stack })
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if (action == "eval") {
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let { script } = ev.data.args;
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try {
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eval(script);
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sendOk();
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} catch (e) {
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sendError(e.message, e.stack);
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function fetch_imports(imports, progress_func) {
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const missing_imports = imports.filter(x => !import_cache[x]);
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let pending_imports = missing_imports.length;
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if (missing_imports.length) {
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let promise = Promise.all(
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missing_imports.map(id => fetch_import(id).then(() => {
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pending_imports -= 1;
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if (progress_func) progress_func(pending_imports);
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}))
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);
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return promise;
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} else {
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return Promise.resolve();
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}
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}
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if (action == "bind_props") {
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let { props } = ev.data.args
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if (!window.component) {
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// TODO can this happen?
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console.warn('no component to bind to');
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sendOk();
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return;
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}
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try {
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props.forEach(prop => {
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// TODO should there be a public API for binding?
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// e.g. `component.$watch(prop, handler)`?
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// (answer: probably)
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window.component.$$.bound[prop] = value => {
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sendMessage({ action:"prop_update", args: { prop, value } })
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};
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});
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sendOk();
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} catch (e) {
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sendError(e.message, e.stack);
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}
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}
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if (action == "set_prop") {
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try {
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if (!window.component) {
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return;
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function handle_message(ev) {
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let { action, cmd_id } = ev.data;
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const send_message = (payload) => parent.postMessage( { ...payload }, ev.origin);
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const send_reply = (payload) => send_message({ ...payload, cmd_id });
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const send_ok = () => send_reply({ action: 'cmd_ok' });
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const send_error = (message, stack) => send_reply({ action: 'cmd_error', message, stack });
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if (action === 'eval') {
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try {
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const { script } = ev.data.args;
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eval(script);
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send_ok();
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} catch (e) {
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send_error(e.message, e.stack);
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}
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let { prop, value } = ev.data.args;
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component[prop] = value;
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sendOk();
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} catch (e) {
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sendError(e.message, e.stack);
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}
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}
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if (action == "catch_clicks") {
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try {
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let topOrigin = ev.origin;
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document.body.addEventListener('click', event => {
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if (event.which !== 1) return;
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if (event.metaKey || event.ctrlKey || event.shiftKey) return;
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if (event.defaultPrevented) return;
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// ensure target is a link
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let el = event.target;
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while (el && el.nodeName !== 'A') el = el.parentNode;
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if (!el || el.nodeName !== 'A') return;
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if (el.hasAttribute('download') || el.getAttribute('rel') === 'external' || el.target) return;
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event.preventDefault();
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if (el.href.startsWith(topOrigin)) {
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const url = new URL(el.href);
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if (url.hash[0] === '#') {
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window.location.hash = url.hash;
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return;
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if (action === 'catch_clicks') {
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try {
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const top_origin = ev.origin;
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document.body.addEventListener('click', event => {
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if (event.which !== 1) return;
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if (event.metaKey || event.ctrlKey || event.shiftKey) return;
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if (event.defaultPrevented) return;
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// ensure target is a link
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let el = event.target;
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while (el && el.nodeName !== 'A') el = el.parentNode;
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if (!el || el.nodeName !== 'A') return;
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if (el.hasAttribute('download') || el.getAttribute('rel') === 'external' || el.target) return;
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event.preventDefault();
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if (el.href.startsWith(top_origin)) {
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const url = new URL(el.href);
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if (url.hash[0] === '#') {
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window.location.hash = url.hash;
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return;
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}
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}
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}
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window.open(el.href, '_blank');
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});
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sendOk();
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} catch(e) {
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sendError(e.message, e.stack);
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window.open(el.href, '_blank');
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});
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send_ok();
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} catch(e) {
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send_error(e.message, e.stack);
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}
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}
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}
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if (action == "fetch_imports") {
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let { imports, import_map } = ev.data.args;
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fetchImports(imports, (remaining) => {
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sendMessage({action: "fetch_progress", args: { remaining }});
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})
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.then(() => {
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imports.forEach(x=> {
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const module = importCache[x];
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const name = import_map.get(x);
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window[name] = module;
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if (action === 'fetch_imports') {
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const { imports, import_map } = ev.data.args;
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fetch_imports(imports, (remaining) => {
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send_message({action: 'fetch_progress', args: { remaining }});
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})
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.then(() => {
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imports.forEach(x=> {
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const module = import_cache[x];
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const name = import_map.get(x);
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window[name] = module;
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});
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send_ok();
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})
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.catch(e => {
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send_error(e.message, e.stack);
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});
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sendOk();
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})
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.catch(e => {
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sendError(e.message, e.stack);
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})
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}
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}
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}
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window.addEventListener("message", handleMessage, false)
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console.log("repl-runner initialized");
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window.addEventListener('message', handle_message, false);
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})();
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