clean-stacktrace-metadata

Plugin for clean-stacktrace lib. Parse each line to get additional info like filename, column and line of the error.

You might also be interested in clean-stacktrace.

Table of Contents

• Install
• Usage
• API
  • cleanStacktraceMetadata
• Related
• Contributing
• Building docs
• Running tests
• Author
• License

Install

Install with npm

$ npm install clean-stacktrace-metadata --save

or install using yarn

$ yarn add clean-stacktrace-metadata

Usage

For more use-cases see the tests

const cleanStacktraceMetadata = require('clean-stacktrace-metadata')

API

cleanStacktraceMetadata

Parses each line in stack and pass info object to the given plugin function. That plugin function is passed with (line, info, index) signature, where line is string representing the stacktrace line, and info is an object with .line, .column and .filename properties. That's useful, you can attach them to some error object.

Meant to be used inside mapper of the clean-stacktrace, another useful mapper is clean-stacktrace-relative-paths to show relative paths inside stacktrace, instead of absolute paths.

Params

• plugin {Function}: A function passed with (line, info, index) signature.
• returns {Function} mapper: Function that can be passed to clean-stacktrace

Example

const metadata = require('clean-stacktrace-metadata')
const cleanStack = require('clean-stacktrace')

const err = new Error('Missing unicorn')
console.log(error.stack)
// =>
// Error: Missing unicorn
//     at quxie (/home/charlike/apps/alwa.js:8:10)
//     at module.exports (/home/charlike/apps/foo.js:6:3)
//     at Object.<anonymous> (/home/charlike/apps/dush.js:45:3)
//     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)

const mapper = metadata((line, info, index) => {
  if (index === 1) {
    err.line = info.line
    err.column = info.column
    err.filename = info.filename
    err.place = info.place
  }

  return line
})

const stack = cleanStack(error.stack, mapper)
console.log(stack)
// =>
// Error: Missing unicorn
//     at quxie (/home/charlike/apps/alwa.js:8:10)
//     at module.exports (/home/charlike/apps/foo.js:6:3)
//     at Object.<anonymous> (/home/charlike/apps/dush.js:45:3)

console.log(err.place) // => 'quxie'
console.log(err.line) // => 8
console.log(err.column) // => 10
console.log(err.filename) // => '/home/charlike/apps/alwa.js'

Related

• always-done: Handle completion and errors with elegance! Support for streams, callbacks, promises, child processes, async/await and sync functions. A drop-in replacement… more | homepage
• assert-kindof: Check native type of value and throw AssertionError if not okey. Clean stack traces. Simplicity. Built on is-kindof. | homepage
• clean-stack: Clean up error stack traces | homepage
• clean-stacktrace-relative-paths: Meant to be used with clean-stacktrace as mapper function. Makes absolute paths inside stack traces to relative paths. | homepage
• clean-stacktrace: Clean up error stack traces from node internals | homepage
• is-kindof: Check type of given javascript value. Support promises, generators, streams, and native types. Built on kind-of lib. | homepage
• minibase: Minimalist alternative for Base. Build complex APIs with small units called plugins. Works well with most of the already existing… more | homepage
• stacktrace-metadata: Modify given err object to be more useful. Adds line, column and filename properties. | homepage
• try-catch-core: Low-level package to handle completion and errors of sync or asynchronous functions, using once and dezalgo libs. Useful for and… more | homepage

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
Please read the contributing guidelines for advice on opening issues, pull requests, and coding standards.
If you need some help and can spent some cash, feel free to contact me at CodeMentor.io too.

In short: If you want to contribute to that project, please follow these things

1. Please DO NOT edit README.md, CHANGELOG.md and .verb.md files. See "Building docs" section.
2. Ensure anything is okey by installing the dependencies and run the tests. See "Running tests" section.
3. Always use npm run commit to commit changes instead of git commit, because it is interactive and user-friendly. It uses commitizen behind the scenes, which follows Conventional Changelog idealogy.
4. Do NOT bump the version in package.json. For that we use npm run release, which is standard-version and follows Conventional Changelog idealogy.

Thanks a lot! :)

Building docs

Documentation and that readme is generated using verb-generate-readme, which is a verb generator, so you need to install both of them and then run verb command like that

$ npm install verbose/verb#dev verb-generate-readme --global && verb

Please don't edit the README directly. Any changes to the readme must be made in .verb.md.

Running tests

Clone repository and run the following in that cloned directory

$ npm install && npm test

Author

Charlike Mike Reagent

• github/tunnckoCore
• twitter/tunnckoCore
• codementor/tunnckoCore

License

Copyright © 2017, Charlike Mike Reagent. Released under the MIT License.

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This file was generated by verb-generate-readme, v0.4.3, on March 13, 2017.
Project scaffolded using charlike cli.