Formats errors as nice strings with colors
npm install pretty-print-errorA little function that formats an error object as a nice, readable string. Works in node and the browser; in node, it will use kleur to add ANSI color code escape sequences to the output string, to make it easier to read.
- Works in both node and the browser
- Browser version is only ~2k
- Error name and stack are printed in color
- Handles non-error inputs gracefully (accepts unknown in TypeScript)
- Also prints any additional properties that were added to the Error object
- This is particularly nice when working with node's fs errors; node sometimes puts the information about eg "which file couldn't be read" is sometimes in a property on the error, rather than in the error message, so by printing additional properties, it's guaranteed to be visible.
``
npm install pretty-print-error
`ts
import { formatError } from "pretty-print-error";
const error = new Error("uh oh!");
error.context = {
user: "jeff",
session: "ewnj75hvj3v4tvmuy43er",
favoriteIceCreamFlavor: "pineapple",
};
console.log(formatError(error));
/*
Logs:
Error: uh oh!
at REPL2:1:9
The above error also had these properties on it:
{
context: {
user: 'jeff',
session: 'ewnj75hvj3v4tvmuy43er',
favoriteIceCreamFlavor: 'pineapple'
}
}
*/
``
MIT