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Extract the actual stack of an error
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extract-stack Build Status

Extract the actual stack of an error

Install

$ npm install --save extract-stack

Usage

const extractStack = require('extract-stack');
const error = new Error('Missing unicorn');

console.log(error.stack);
/*
Error: Missing unicorn
    at Object.<anonymous> (/Users/sindresorhus/dev/extract-stack/unicorn.js:2:15)
    at Module._compile (module.js:409:26)
    at Module.load (module.js:343:32)
    at startup (node.js:139:18)
*/

console.log(extractStack(error));
/*
    at Object.<anonymous> (/Users/sindresorhus/dev/extract-stack/unicorn.js:2:15)
    at Module._compile (module.js:409:26)
    at Module.load (module.js:343:32)
    at startup (node.js:139:18)
*/

console.log(extractStack.lines(error));
/*
[
	'Object.<anonymous> (/Users/sindresorhus/dev/extract-stack/unicorn.js:2:15)'
	'Module._compile (module.js:409:26)'
	'Module.load (module.js:343:32)'
	'startup (node.js:139:18)'
]
*/

API

It gracefully handles cases where the stack is undefined or empty and returns an empty string.

extractStack(input)

Returns the actual stack part of the error stack.

extractStack.lines(input)

Returns the stack lines of the error stack without the noise as an Array.

input

Type: Error string

Either an Error or the .stack of an Error.

Related

License

MIT © Sindre Sorhus

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