42 lines
1.1 KiB
JavaScript
42 lines
1.1 KiB
JavaScript
importScripts('{{ static "go_wasm_exec.js" }}');
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// wowee good javascript yeah
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const global = Function('return this')();
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/*
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NOTE(ben): The structure here is a little funny but allows for some debouncing. Any postMessages
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that got queued up can run all at once, then it can process the latest one.
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*/
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let wasmLoaded = false;
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let jobs = {};
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onmessage = ({ data }) => {
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const { elementID, markdown, parserName } = data;
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jobs[elementID] = { markdown, parserName };
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setTimeout(doPreview, 0);
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}
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const go = new Go();
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WebAssembly.instantiateStreaming(fetch('{{ static "parsing.wasm" }}'), go.importObject)
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.then(result => {
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go.run(result.instance); // don't await this; we want it to be continuously running
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wasmLoaded = true;
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setTimeout(doPreview, 0);
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});
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const doPreview = () => {
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if (!wasmLoaded) {
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return;
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}
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for (const [elementID, { markdown, parserName }] of Object.entries(jobs)) {
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const html = global[parserName](markdown);
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postMessage({
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elementID: elementID,
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html: html,
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});
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}
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jobs = {};
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}
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