neat-stack

Make a color-coded stack trace from an error

const neatStack = require('neat-stack');
const request = require('request');

request('foo', err => console.error(neatStack(err)));

Useful for CLI applications — stack traces are not very important for end users but needed for authors to receive meaningful bug reports.

Installation

Use npm.

npm install neat-stack

API

const neatStack = require('neat-stack');

neatStack(error)

error: Error
Return: string

It returns a refined Error#stack:

• Red-colored by ANSI escape code.
• Lines starting with ' at' are dimmed.
• Any lines from Node.js internals are omitted.
• Paths are simplified by replacing a home directory with ~ on POSIX.

const error = new Error('Hi');

error.stack; /* => `Error: Hi
    at Object.<anonymous> (/Users/example/run.js:1:75)
    at Module._compile (internal/modules/cjs/loader.js:654:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)
    at Module.load (internal/modules/cjs/loader.js:566:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:506:12)
    at Function.Module._load (internal/modules/cjs/loader.js:498:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:695:10)
    at startup (internal/bootstrap/node.js:201:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:516:3)` */

neatStack(error); /* => `\u001b[31mError: Hi\u001b[2m
    at Object.<anonymous> (~/example/run.js:1:88)\u001b[22m\u001b[39m` */

License

ISC License © 2017 - 2019 Shinnosuke Watanabe