# MF2 to JF2

[![Test status](https://github.com/getindiekit/mf2tojf2/workflows/test/badge.svg)](https://github.com/getindiekit/mf2tojf2/actions)

Convert [MF2](https://microformats.org/wiki/microformats2-parsing) to [JF2](https://jf2.spec.indieweb.org).

JF2 is a simpler JSON serialization of microformats2 intended to be easier to consume than the standard [microformats JSON representation](https://microformats.org/wiki/microformats2).

## Requirements

- [Node.js](https://nodejs.org) v22+

## Usage

### Simple (synchronous)

```js
import { mf2tojf2 } from "mf2tojf2";

const mf2 = {
  items: [
    {
      type: ["h-card"],
      properties: {
        name: ["Paul Robert Lloyd"],
        url: ["https://paulrobertlloyd.com"],
      },
    },
  ],
};

const jf2 = mf2tojf2(mf2);

console.log(jf2);
```

Returns:

```js
{
  type: "card",
  name: "Paul Robert Lloyd",
  url: "https://paulrobertlloyd.com"
}
```

### With references (asynchronous)

JF2 can include [a `references` property](https://jf2.spec.indieweb.org/#using-references) to exclude any non-authoritative data from the defined object.

```js
import { mf2tojf2referenced } from "mf2tojf2";

const mf2 = {
  items: [
    {
      type: ["h-entry"],
      properties: {
        name: ["What my friend ate for lunch yesterday"],
        published: ["2019-02-12T10:00:00.000+00:00"],
        url: ["https://my-website.example/bookmarks/lunch"],
        "bookmark-of": ["https://their-website.example/notes/lunch"],
        "mp-syndicate-to": "https://example.social/@username",
      },
    },
  ],
};

const jf2WithReferences = await mf2tojf2referenced(mf2);

console.log(jf2WithReferences);
```

Returns:

```js
{
  type: "entry",
  name: "What my friend ate for lunch yesterday",
  published: "2019-02-12T10:00:00.000+00:00",
  url: "https://my-website.example/bookmarks/lunch",
  "bookmark-of": "https://their-website.example/notes/lunch",
  "mp-syndicate-to": "https://example.social/@username",
  references: {
    "https://their-website.example/notes/lunch": {
      type: "entry",
      name: "What I ate for lunch",
      published: "2019-01-12T15:55:00.000+00:00",
      url: "https://their-website.example/notes/lunch",
      content: {
        text: "I ate a cheese sandwich, which was nice.",
        html: "<p>I ate a cheese sandwich, which was nice.</p>"
      },
      category: ["Food", "Lunch", "Sandwiches"]
    }
  }
}
```

> [!NOTE]\
> Values for `audio`, `photo`, `url`, `video` and any property prefixed with `mp-`, are excluded from referencing.

## Testing

`npm test`

## Releasing a new version

`npm run release`

## Credits

Based on [mf2tojf2.py](https://github.com/microformats/mf2tojf2.py).