60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
const g = global || window || self
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if (!g.__go_wasm__) {
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g.__go_wasm__ = {};
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}
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const maxTime = new Date()
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maxTime.setSeconds(maxTime.getSeconds() + 3) // if js does not initialize after 3 seconds, we allow it to start anyhow and print a warning
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const bridge = g.__go_wasm__;
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function sleep() {
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return new Promise(requestAnimationFrame)
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}
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export default function (getBytes) {
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async function init() {
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const go = new g.Go();
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let bytes = await getBytes
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let result = await WebAssembly.instantiate(bytes, go.importObject);
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go.run(result.instance);
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setTimeout(() => {
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if (bridge.__ready__ !== true) {
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console.warn("Golang Wasm Bridge (__go_wasm__.__ready__) still not true after max time")
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}
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}, 3 * 1000)
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}
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init();
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let proxy = new Proxy(
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{},
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{
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get: (_, key) => {
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return (...args) => {
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return new Promise(async (res, rej) => {
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while (bridge.__ready__ !== true) {
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await sleep()
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}
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if (typeof bridge[key] !== 'function') {
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res(bridge[key]);
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return;
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}
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const returnObj = bridge[key].apply(undefined, args)
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if (returnObj.error) {
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rej(returnObj.error)
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} else {
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res(returnObj.result)
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}
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})
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};
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}
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}
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);
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return proxy;
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}
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