40 lines
1.6 KiB
JavaScript
40 lines
1.6 KiB
JavaScript
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// This is our simple, robust watcher. It hooks into the BuckleScript build
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// system to listen for build events.
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// See package.json's `start` script and `./node_modules/.bin/bsb --help`
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// Btw, if you change this file and reload the page, your browser cache
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// _might_ not pick up the new version. If you're in Chrome, do Force Reload.
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var websocketReloader;
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var LAST_SUCCESS_BUILD_STAMP = localStorage.getItem('LAST_SUCCESS_BUILD_STAMP') || 0;
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// package.json's `start` script's `bsb -ws _` means it'll pipe build events
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// through a websocket connection to a default port of 9999. This is
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// configurable, e.g. `-ws 5000`
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var webSocketPort = 9999;
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function setUpWebSocket() {
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if (websocketReloader == null || websocketReloader.readyState !== 1) {
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try {
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websocketReloader = new WebSocket(`ws://${window.location.hostname}:${webSocketPort}`);
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websocketReloader.onmessage = (message) => {
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var newData = JSON.parse(message.data).LAST_SUCCESS_BUILD_STAMP;
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if (newData > LAST_SUCCESS_BUILD_STAMP) {
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LAST_SUCCESS_BUILD_STAMP = newData;
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localStorage.setItem('LAST_SUCCESS_BUILD_STAMP', LAST_SUCCESS_BUILD_STAMP);
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// Refresh the page! This will naturally re-run everything,
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// including our moduleserve which will re-resolve all the modules.
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// No stable build!
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location.reload(true);
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}
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}
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} catch (exn) {
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console.error("The watcher tried to connect to web socket, but failed. Here's the message:");
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console.error(exn);
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}
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}
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};
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setUpWebSocket();
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setInterval(setUpWebSocket, 2000);
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