README.md
# metalsmith-directory-metadata
[![npm package](https://img.shields.io/npm/v/metalsmith-directory-metadata.svg)][npm]
[![License: MIT](https://img.shields.io/static/v1?label=license&message=MIT&color=green)][github-license]
![Supported Node version: >=8.3.0](https://img.shields.io/static/v1?label=node&message=%3E%3D8.3.0&color=brightgreen)
![Type Definitions: TypeScript](https://img.shields.io/npm/types/metalsmith-directory-metadata.svg)
[![bundle size](https://badgen.net/bundlephobia/min/metalsmith-directory-metadata@1.0.0)](https://bundlephobia.com/result?p=metalsmith-directory-metadata@1.0.0)
[![Dependencies Status](https://david-dm.org/sounisi5011/metalsmith-directory-metadata/status.svg)](https://david-dm.org/sounisi5011/metalsmith-directory-metadata)
[![Build Status](https://travis-ci.com/sounisi5011/metalsmith-directory-metadata.svg?branch=master)](https://travis-ci.com/sounisi5011/metalsmith-directory-metadata)
[![Maintainability Status](https://api.codeclimate.com/v1/badges/4dcb19ba4651279775d5/maintainability)](https://codeclimate.com/github/sounisi5011/metalsmith-directory-metadata/maintainability)
[npm]: https://www.npmjs.com/package/metalsmith-directory-metadata
[github-license]: https://github.com/sounisi5011/metalsmith-directory-metadata/blob/v1.0.0/LICENSE
Defines default metadata for files in a directory.
## Features
* can define directory metadata
This plugin defines the metadata that all files in the directory have in common.
Directory metadata is defined using a definition file in JSON or YAML format.
## Install
```sh
npm install metalsmith-directory-metadata
```
## CLI Usage
Install via npm and then add the `metalsmith-directory-metadata` key to your `metalsmith.json` plugin, like so:
```json
{
"plugins": {
"metalsmith-directory-metadata": true
}
}
```
If you need to specify an options, set the options to the value of the `metalsmith-directory-metadata` key.
```json
{
"plugins": {
"metalsmith-directory-metadata": {
"pattern": "**/.metadata"
}
}
}
```
See [Metalsmith CLI] for more details.
[Metalsmith CLI]: https://github.com/segmentio/metalsmith#cli
## Javascript Usage
The simplest use is to omit the option. By [default](#options), the following files are used to define metadata: `metadata.yaml`, `metadata.yml`, `metadata.json`, and `metadata`.
```js
const directoryMetadata = require('metalsmith-directory-metadata');
metalsmith
.use(directoryMetadata());
```
If you need to specify an options, set the options value.
```js
const directoryMetadata = require('metalsmith-directory-metadata');
metalsmith
.use(directoryMetadata({
pattern: '**/.metadata',
}));
```
If you want to use the `files` variable or the default options value, you can specify the callback function that generates the options.
```js
const directoryMetadata = require('metalsmith-directory-metadata');
metalsmith
.use(directoryMetadata(
(files, metalsmith, defaultOptions) => {
return {
pattern: [...defaultOptions.pattern, '**/.metadata'],
};
}
));
```
## TypeScript Usage
For compatibility with the [Metalsmith CLI], this package exports single function in CommonJS style.
When using with TypeScript, it is better to use the [`import = require()` statement](https://www.typescriptlang.org/docs/handbook/modules.html#export--and-import--require).
```js
import directoryMetadata = require('metalsmith-directory-metadata');
metalsmith
.use(directoryMetadata());
```
## Options
The default value for options are [defined](https://github.com/sounisi5011/metalsmith-directory-metadata/blob/v1.0.0/src/options.ts#L16-L18) like this:
```js
{
pattern: ['**/metadata.{json,yaml,yml}', '**/metadata'],
}
```
### `pattern`
Specifies the Glob pattern that matches the file that defines the directory metadata.
Specify a glob expression string or an array of strings as the pattern.
Pattern are verified using [multimatch v4.0.0][npm-multimatch-used].
[npm-multimatch-used]: https://www.npmjs.com/package/multimatch/v/4.0.0
Default value ([source](https://github.com/sounisi5011/metalsmith-directory-metadata/blob/v1.0.0/src/options.ts#L17)):
```js
['**/metadata.{json,yaml,yml}', '**/metadata']
```
Type definition ([source](https://github.com/sounisi5011/metalsmith-directory-metadata/blob/v1.0.0/src/options.ts#L5)):
```ts
string | string[]
```
## Debug mode
This plugin supports debugging output.
To enable, use the following command when running your build script:
```sh
DEBUG=metalsmith-directory-metadata,metalsmith-directory-metadata:* node my-website-build.js
```
For more details, please check the description of [debug v4.1.1][npm-debug-used].
[npm-debug-used]: https://www.npmjs.com/package/debug/v/4.1.1
## Tests
To run the test suite, first install the dependencies, then run `npm test`:
```sh
npm install
npm test
```
## Contributing
see [CONTRIBUTING.md](https://github.com/sounisi5011/metalsmith-directory-metadata/blob/master/CONTRIBUTING.md)