clean-stack

Clean up error stack traces

Removes the mostly unhelpful internal Node.js entries.

Also works in the browser and Electron.

Install

npm install clean-stack

Usage

import cleanStack from 'clean-stack';

const error = new Error('Missing unicorn');

console.log(error.stack);
/*
Error: Missing unicorn
    at Object.<anonymous> (/Users/sindresorhus/dev/clean-stack/unicorn.js:2:15)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:441:10)
    at startup (node.js:139:18)
*/

console.log(cleanStack(error.stack));
/*
Error: Missing unicorn
    at Object.<anonymous> (/Users/sindresorhus/dev/clean-stack/unicorn.js:2:15)
*/

API

cleanStack(stack, options?)

Returns the cleaned stack or undefined if the given stack is undefined.

stack

Type: string | undefined

The stack property of an Error.

options

Type: object

pretty

Type: boolean
Default: false

Prettify the file paths in the stack:

• /Users/sindresorhus/dev/clean-stack/unicorn.js:2:15 → ~/dev/clean-stack/unicorn.js:2:15
• file:///Users/sindresorhus/dev/clean-stack/unicorn.js:2:15 → ~/dev/clean-stack/unicorn.js:2:15

When enabled, file URLs are converted to regular paths for better readability and IDE integration.

basePath

Type: string?

Remove the given base path from stack trace file paths, effectively turning absolute paths into relative ones. It will also transform absolute file URLs into relative paths.

Example with '/Users/sindresorhus/dev/clean-stack' as basePath:

/Users/sindresorhus/dev/clean-stack/unicorn.js:2:15 → unicorn.js:2:15

pathFilter

Type: (path: string) => boolean

Remove the stack lines where the given function returns false. The function receives the path part of the stack line.

import cleanStack from 'clean-stack';

const error = new Error('Missing unicorn');

console.log(cleanStack(error.stack));
// Error: Missing unicorn
//     at Object.<anonymous> (/Users/sindresorhus/dev/clean-stack/unicorn.js:2:15)
//     at Object.<anonymous> (/Users/sindresorhus/dev/clean-stack/omit-me.js:1:16)

const pathFilter = path => !/omit-me/.test(path);

console.log(cleanStack(error.stack, {pathFilter}));
// Error: Missing unicorn
//     at Object.<anonymous> (/Users/sindresorhus/dev/clean-stack/unicorn.js:2:15)

Related

• extract-stack - Extract the actual stack of an error
• stack-utils - Captures and cleans stack traces