SqliteWorker: wait until worker is ready
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71e8d26195
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@ -1,17 +1,30 @@
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class SqliteWorker {
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class SqliteWorker {
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#path: string;
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#path: string;
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#worker: Worker;
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#worker: Worker;
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ready: Promise<void>;
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constructor(path: string) {
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constructor(path: string) {
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this.#path = path;
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this.#path = path;
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this.#worker = new Worker(new URL('./sqlite.worker.ts', import.meta.url).href, { type: 'module' });
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this.#worker = new Worker(new URL('./sqlite.worker.ts', import.meta.url).href, { type: 'module' });
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this.ready = new Promise<void>((resolve) => {
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const handleEvent = (event: MessageEvent) => {
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if (event.data[0] === 'ready') {
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this.#worker.removeEventListener('message', handleEvent);
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resolve();
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}
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};
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this.#worker.addEventListener('message', handleEvent);
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});
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}
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}
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open(): Promise<void> {
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async open(): Promise<void> {
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await this.ready;
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return this.#call(['open', [this.#path]]);
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return this.#call(['open', [this.#path]]);
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}
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}
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query(sql: string, params?: any): Promise<unknown[]> {
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async query(sql: string, params?: any): Promise<unknown[]> {
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await this.ready;
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return this.#call(['query', [sql, params]]);
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return this.#call(['query', [sql, params]]);
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}
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}
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@ -29,4 +29,6 @@ self.addEventListener('message', (event: MessageEvent<[string, Msg]>) => {
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const [id, msg] = event.data;
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const [id, msg] = event.data;
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const result = call(msg);
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const result = call(msg);
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self.postMessage([id, result]);
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self.postMessage([id, result]);
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});
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});
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self.postMessage(['ready']);
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