45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
import initModule from '../libapi.mjs';
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/** @typedef {import('../libapi.mjs').Context} Context */
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const ModulePromise = initModule();
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export function rethrowIfCritical(err) {
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// If it's precisely Error, it's a custom error; anything else - SyntaxError,
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// WebAssembly.RuntimeError, TypeError, etc. - is treated as critical here.
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if (err.constructor !== Error) {
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throw err;
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}
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}
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export async function connect() {
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const Module = await ModulePromise;
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let context = await new Module.Context();
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let supportedOps = await context.supportedOps();
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/** @type {Promise<unknown>} */
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let queue = Promise.resolve();
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/** Schedules an exclusive async operation on the global context.
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* @template T,T2
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* @param {(ctx: Context) => Promise<T>} op
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* @returns {Promise<T>}
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*/
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function schedule(op) {
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let res = queue.then(() => op(context));
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queue = res.catch(rethrowIfCritical);
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return res;
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}
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return {
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supportedOps,
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schedule,
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disconnect() {
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context.delete();
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}
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};
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}
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/** @typedef {ReturnType<typeof connect> extends Promise<infer Connection> ? Connection : never} Connection */
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