xast-util-feed
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    1.2.0 • Public • Published

    xast-util-feed

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    xast utility to build (web) feeds (RSS, Atom).

    This package focusses on a small set of widely used and supported parts of feeds. It has a few good options instead of overwhelming with hundreds of things to configure. If you do need more things, well: this utility gives you a syntax tree, which you can change.

    It’s good to use this package to build several feeds and to only include recent posts (often 15-20 items are included in a channel). You should make a channel for all your posts; when relevant, separate channels per language; and potentially, channels per post type (e.g., separate ones for blog posts, notes, and images).

    Just using either RSS or Atom is probably fine: no need to do both.

    Install

    This package is ESM only: Node 12+ is needed to use it and it must be imported instead of required.

    npm:

    npm install xast-util-feed

    Use

    Say we have the following module, example.js

    import {atom, rss} from 'xast-util-feed'
    import {toXml} from 'xast-util-to-xml'
    
    var channel = {
      title: 'NYT > Top Stories',
      url: 'https://www.nytimes.com',
      feedUrl: 'https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml',
      lang: 'en',
      author: 'The New York Times Company'
    }
    
    var data = [
      {
        title: 'Senate Balances Impeachment Trial With an Incoming President',
        url:
          'https://www.nytimes.com/2021/01/14/us/politics/impeachment-senate-trial-trump.html',
        descriptionHtml: '<p>Senate leaders etc etc etc.</p>',
        author: 'Nicholas Fandos and Catie Edmondson',
        published: 'Fri, 15 Jan 2021 01:18:49 +0000',
        tags: ['Senate', 'Murkowski, Lisa', 'Trump, Donald J']
      }
    ]
    
    console.log(toXml(rss(channel, data)))
    console.log(toXml(atom(channel, data)))

    Now, running node example.js yields (pretty printed):

    <?xml version="1.0" encoding="utf-8"?>
    <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom">
      <channel>
        <title>NYT > Top Stories</title>
        <description></description>
        <link>https://www.nytimes.com/</link>
        <lastBuildDate>Sun, 17 Jan 2021 09:00:54 GMT</lastBuildDate>
        <dc:date>2021-01-17T09:00:54.781Z</dc:date>
        <atom:link href="https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml" rel="self" type="application/rss+xml"></atom:link>
        <language>en</language>
        <dc:language>en</dc:language>
        <copyright>© 2021 The New York Times Company</copyright>
        <dc:rights>© 2021 The New York Times Company</dc:rights>
        <item>
          <title>Senate Balances Impeachment Trial With an Incoming President</title>
          <dc:creator>Nicholas Fandos and Catie Edmondson</dc:creator>
          <link>https://www.nytimes.com/2021/01/14/us/politics/impeachment-senate-trial-trump.html</link>
          <guid isPermaLink="false">https://www.nytimes.com/2021/01/14/us/politics/impeachment-senate-trial-trump.html</guid>
          <pubDate>Fri, 15 Jan 2021 01:18:49 GMT</pubDate>
          <dc:date>2021-01-15T01:18:49.000Z</dc:date>
          <category>Senate</category>
          <category>Murkowski, Lisa</category>
          <category>Trump, Donald J</category>
          <description>&#x3C;p>Senate leaders etc etc etc.&#x3C;/p></description>
        </item>
      </channel>
    </rss>
    <?xml version="1.0" encoding="utf-8"?>
    <feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
      <title>NYT > Top Stories</title>
      <subtitle></subtitle>
      <link>https://www.nytimes.com/</link>
      <id>https://www.nytimes.com/</id>
      <updated>Sun, 17 Jan 2021 09:00:54 GMT</updated>
      <link href="https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml" rel="self" type="application/atom+xml"></link>
      <rights>© 2021 The New York Times Company</rights>
      <author>
        <name>The New York Times Company</name>
      </author>
      <category term="Senate"></category>
      <category term="Murkowski, Lisa"></category>
      <category term="Trump, Donald J"></category>
      <entry>
        <title>Senate Balances Impeachment Trial With an Incoming President</title>
        <author>
          <name>Nicholas Fandos and Catie Edmondson</name>
        </author>
        <link href="https://www.nytimes.com/2021/01/14/us/politics/impeachment-senate-trial-trump.html"></link>
        <id>https://www.nytimes.com/2021/01/14/us/politics/impeachment-senate-trial-trump.html</id>
        <published>2021-01-15T01:18:49.000Z</published>
        <content type="html">&#x3C;p>Senate leaders etc etc etc.&#x3C;/p></content>
      </entry>
    </feed>

    API

    This package exports the following identifiers: atom, rss. There is no default export.

    rss(channel, data)

    Build an RSS feed.

    channel

    See Channel.

    data

    List of Entry objects.

    Returns

    Rootxast root.

    atom(channel, data)

    Build an Atom feed. Same API as rss otherwise.

    Channel

    Data on the feed (the group of items).

    channel.title

    Title of the channel (string, required, example: Zimbabwe | The Guardian).

    channel.url

    Full URL to the site (string, required, example: 'https://www.theguardian.com/world/zimbabwe').

    channel.feedUrl

    Full URL to this channel (string?, example: 'https://www.adweek.com/feed/'). Make sure to pass different ones to rss and atom! You should define this.

    channel.description

    Short description of the channel (string?, example: Album Reviews). You should define this.

    channel.lang

    BCP 47 language tag representing the language of the whole channel (string?, example: 'fr-BE'). You should define this.

    channel.author

    Optional author of the whole channel. Either string, in which case it’s as passing {name: string}. Or an object with the following fields:

    • name (string, example: 'Acme, Inc.' or 'Jane Doe')
    • email (string?, example: john@example.org)
    • url (string?, example: 'https://example.org/john')

    url is used in atom, not in rss.

    channel.tags

    Categories of the channel (Array.<string>?, example: ['JavaScript', 'React']).

    Entry

    Data on a single item.

    entry.title

    Title of the item (string?, example: 'Playboi Carti: Whole Lotta Red'). Either title, description, or descriptionHtml must be set.

    entry.description

    Either the whole post or an excerpt of it (string?, example: 'Lorem'). Should be plain text. descriptionHtml is preferred over plain text description. Either title, description, or descriptionHtml must be set.

    entry.descriptionHtml

    Either the whole post or an excerpt of it (string?, example: '<p>Lorem</p>'). Should be serialized HTML. descriptionHtml is preferred over plain text description. Either title, description, or descriptionHtml must be set.

    entry.author

    Entry version of channel.author. You should define this. For atom, it is required to either set channel.author or set author on all entries.

    entry.url

    Full URL of this entry on the site (string?, example: 'https://pitchfork.com/reviews/albums/roberta-flack-first-take').

    entry.published

    When the entry was first published (Date or value for new Date(x), optional).

    entry.modified

    When the entry was last modified (Date or value for new Date(x), optional).

    entry.tags

    Categories of the entry (Array.<string>?, example: ['laravel', 'debugging']).

    entry.enclosure

    An enclosure, such as an image or audio, is an object with the following fields:

    • url (string, example: 'http://dallas.example.com/joebob_050689.mp3') — Full URL to the resource
    • size (number, example: 24986239) — Resource size in bytes
    • type (string, example: 'audio/mpeg') — Mime type of the resource

    Security

    XML can be a dangerous language: don’t trust user-provided data.

    Related

    Contribute

    See contributing.md in syntax-tree/.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, organization, or community you agree to abide by its terms.

    License

    MIT © Titus Wormer

    Install

    npm i xast-util-feed

    DownloadsWeekly Downloads

    9

    Version

    1.2.0

    License

    MIT

    Unpacked Size

    33.1 kB

    Total Files

    13

    Last publish

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