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typescript-chained-error
Advanced tools
Chained custom errors for Typescript and Javascript. ('Caused by' in error stack)
ChainedErrorFactory
that can extend any already existing error with Caused by
clause additional properties and$ npm install --save typescript-chained-error
import ChainedCustomError from "typescript-chained-error";
class CannotPerformCalculationsError extends ChainedCustomError {
public constructor(msg?: string, cause?: Error) {
super(msg, cause);
}
}
// function that may throw
function buildArray(desiredLength: number) {
try {
return new Array(desiredLength);
} catch (error) {
throw new CannotPerformCalculationsError("Cannot build array", error);
}
}
// call function with illegal parameter
buildArray(-5);
The output:
CannotPerformCalculationsError: Cannot build array
at buildArray (/typescript-chained-error/src/test.ts:14:15)
at Object.<anonymous> (/typescript-chained-error/src/test.ts:18:1)
(...)
Caused by: RangeError: Invalid array length
at buildArray (/typescript-chained-error/src/test.ts:12:16)
at Object.<anonymous> (/typescript-chained-error/src/test.ts:18:1)
(...)
interface Options {
cleanStack: boolean; // default: true
}
// Pass options in constructor
public constructor(msg?: string, cause?: Error) {
super(msg, cause, { cleanStack: false });
}
Example with firebase-functions https error (which is the only error that is thrown at the call site).
import { ChainedErrorFactory } from "typescript-chained-error";
import * as functions from "firebase-functions";
throw ChainedErrorFactory.make(
// primary error that will be extended (this error is preserved in the prototype chain):
functions.https.HttpsError("resource-exhausted", "Message"),
// Causing error:
new TypeError("Cause error"),
// (optional) Additional fields that will be assigned to the returned error object
// e.g.: functions.https.HttpsError allow to add a details field to the error. That field will be reconstructed at the call site.
/* optional: */ { details: { additional: "properties" } },
// (optional) Options. Specified above.
);
Extends the brilliant ts-custom-error. Uses clean-stack by @sindresorhus for pretty output. | Made with ❤️ by Jędrzej Lewandowski.
FAQs
Chained custom errors for Typescript and Javascript. ('Caused by' in error stack)
The npm package typescript-chained-error receives a total of 0 weekly downloads. As such, typescript-chained-error popularity was classified as not popular.
We found that typescript-chained-error demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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