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47 lines
1.3 KiB
TypeScript
47 lines
1.3 KiB
TypeScript
// Copyright 2018 the Deno authors. All rights reserved. MIT license.
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import { PromiseRejectEvent } from "./libdeno";
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/* tslint:disable-next-line:no-any */
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const rejectMap = new Map<Promise<any>, string>();
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// For uncaught promise rejection errors
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/* tslint:disable-next-line:no-any */
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const otherErrorMap = new Map<Promise<any>, string>();
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// For reject after resolve / resolve after resolve errors
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export function promiseRejectHandler(
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error: Error | string,
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event: PromiseRejectEvent,
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/* tslint:disable-next-line:no-any */
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promise: Promise<any>
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) {
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switch (event) {
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case "RejectWithNoHandler":
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rejectMap.set(promise, (error as Error).stack || "RejectWithNoHandler");
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break;
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case "HandlerAddedAfterReject":
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rejectMap.delete(promise);
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break;
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default:
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// error is string here
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otherErrorMap.set(promise, `Promise warning: ${error as string}`);
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}
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}
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// Return true when continue, false to die on uncaught promise reject
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export function promiseErrorExaminer(): boolean {
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if (otherErrorMap.size > 0) {
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for (const msg of otherErrorMap.values()) {
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console.log(msg);
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}
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otherErrorMap.clear();
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}
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if (rejectMap.size > 0) {
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for (const msg of rejectMap.values()) {
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console.log(msg);
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}
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rejectMap.clear();
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return false;
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}
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return true;
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}
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