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vfile-reporter

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vfile utility to create a report.

Example screenshot of vfile-reporter

Contents

What is this?

This package create a textual report from a file showing the warnings that occurred while processing. Many CLIs of tools that process files, whether linters (such as ESLint) or bundlers (such as esbuild), have similar functionality.

When should I use this?

You can use this package whenever you want to display a report about what occurred while processing to a human.

There are other reporters that display information differently listed in vfile.

Install

This package is ESM only. In Node.js (version 12.20+, 14.14+, or 16.0+), install with npm:

npm install vfile-reporter

In Deno with esm.sh:

import {reporter} from 'https://esm.sh/vfile-reporter@7'

In browsers with esm.sh:

<script type="module">
  import {reporter} from 'https://esm.sh/vfile-reporter@7?bundle'
</script>

Use

Say our module example.js looks as follows:

import {VFile} from 'vfile'
import {reporter} from 'vfile-reporter'

const one = new VFile({path: 'test/fixture/1.js'})
const two = new VFile({path: 'test/fixture/2.js'})

one.message('Warning!', {line: 2, column: 4})

console.error(reporter([one, two]))

…now running node example.js yields:

test/fixture/1.js
  2:4  warning  Warning!

test/fixture/2.js: no issues found

⚠ 1 warning

API

This package exports the identifier reporter. That value is also the default export.

reporter(files[, options])

Create a report from an error, one file, or multiple files.

options

Configuration (optional).

options.color

Use ANSI colors in report (boolean, default: depends). The default behavior in Node.js is the check if color is supported.

options.verbose

Show message notes (boolean, default: false). Notes are optional, additional, long descriptions.

options.quiet

Do not show files without messages (boolean, default: false).

options.silent

Show errors only (boolean, default: false). This does not show info and warning messages. Also sets quiet to true.

options.defaultName

Label to use for files without file path (string, default: '<stdin>'). If one file and no defaultName is given, no name will show up in the report.

Returns

Report (string).

Types

This package is fully typed with TypeScript. It exports the additional type Options.

Compatibility

Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 12.20+, 14.14+, 16.0+, and 18.0+. Our projects sometimes work with older versions, but this is not guaranteed.

Security

Use of vfile-reporter is safe.

Related

Contribute

See contributing.md in vfile/.github for ways to get started. See support.md for ways to get help.

This project has a code of conduct. By interacting with this repository, organisation, or community you agree to abide by its terms.

License

MIT © Titus Wormer

Forked from ESLints stylish reporter (originally created by Sindre Sorhus), which is Copyright (c) 2013 Nicholas C. Zakas, and licensed under MIT.