3.0.3 • Public • Published
    Dimer App

    Dimer is an open source project and CMS to help you publish your documentation online.

    We believe every project/product is incomplete without documentation.
    We want to help you publish user facing documentation, without worrying about tools or code to write.

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    Dimer datastore

    Dimer datastore saves the websites, their versions and documents for each version.

    The datastore operates on JSON flat files and exposes API to mutate and read the store.


    npm i @dimerapp/datastore
    # Yarn 
    yarn add @dimerapp/datastore

    Data Structure

    Following is the data structure of all the nodes inside the store. The required properties are required to mutate the store.


    Site is a given website, with it's own domain.

    Key Value Required Description
    domain String NO The domain of the website. If it's stored on dimer servers, then this is the subdomain test.dimerapp.com
    cname String NO CNAME to dimer subdomain
    settings Object NO An arbitrary object containing website settings. This is usually used by the themes


    Zones are the way to divide sections of your website docs into multiple top levels. For example: Guides, API, FAQ's and so on.

    Key Value Required Description
    slug (unique) String Yes The slug to be used for uniquely identifying the zone.
    name String No The display name for the zone
    versions Array Yes The versions for the zone


    Versions for a given zone. When your are not using zones, then the versions become the part of a virtual zone.

    Key Value Required Description
    no (unique) String YES The version number. It must be URL friendly
    name String No Version no will be used as the name if not defined.
    default Boolean No Is this the default version for documentation. If not defined, the greatest number will be considered as the default version.
    depreciated Boolean No Is this version depreciated
    draft Boolean No Is this version a draft


    The documentation node associated with a version always.

    Key Value Required Description
    content Object Yes The object of nodes, returned by @dimerapp/markdown.
    permalink (unique) String Yes The unique permalink for the doc. This is the URL people will visit to read the doc
    title String Yes The title for the document. First h1 will be used if missing.
    jsonPath (unique) String Yes The relative path, where the content should be saved
    summary String No The document social summary. If missing will be fetched from the content.
    redirects Array[String] No An array of permalinks to be redirected to this document.


    After installation you can grab the datastore as follows and save documents.

    const Datastore = require('@dimerapp/datastore')
    const Context = require('@dimerapp/context')
    const ctx = new Context(__dirname)
    const store = new Datastore(ctx)
    await store.load()

    load(clean = false)

    Load the data store to start mutating it, if store is not loaded, hard exceptions will be raised.

    Also when you pass clean=true, it will load the store from a clean slate. It is helpful, when you want to build documentation from scratch.

    await store.load()
    // from clean slate
    await store.load(true)

    saveDoc(zoneSlug, versionNo, filePath, doc)

    Save a new doc to the datastore.

    • The slug for the zone. If missing, it will be created on the fly.
    • If the version is missing, it will be created on the fly.
    • If filePath exists, the doc will be updated.
    • If permalinkexists, an exception will be raised.
    const markdown = new Markdown('# Hello world')
    const content = await markdown.toJSON()
    // save actual doc
    await store.saveDoc(
        permalink: 'introduction',
        content: content
    // update meta data to database
    await store.persist()

    removeDoc(zoneSlug, versionNo, filePath)

    Remove doc from the store.

    await store.removeDoc('guides', '1.0.0', 'introduction.md')
    // update meta data to database
    await store.persist()


    Syncs the zones inside the db. Also versions for each zone will be synced automatically. Each zone will have a diff node for versions too.

    const { added, updated, removed } = await store.syncZones(zones)
    console.log(added.versions) // { added: [], updated: [], removed: [] }

    syncVersions(zoneSlug, versions)

    Sync an array of versions with the existing one's. Since all versions are saved inside the config dimer.json file, it is impossible to detect which version was added and which was removed to perform individual operations like add, remove. For the very same reason, datastore exposes the API to sync them.

    await store.syncVersions('guides', [
       no: 'master',
       name: 'Version master',
       default: true
       no: 'v4.0',
       name: 'Version 4.0'
       no: 'v3.0',
       name: 'Version 3.0',
       depreciated: true
    // update meta data to database
    await store.persist()


    Returns an array of saved versions.


    getTree(zoneSlug, versionNo, limit = 0, withContent = false, attachVersion = false)

    Get an array of all the docs. Ideally you want this array to create a navigation menu and then on each request, you can ask for the doc content. However...

    • You can pass withContent=true and the array will have the actual content for the doc too.
    • Setting limit=0 will return all the docs.
    • All docs will be grouped by categories.
    • When attachVersion=true. Each doc will contain it's version node.
    const tree = await store.getTree('guides', 'v4.0')
    // output
       category: 'Getting started',
       docs: [{
         permalink: ''

    getDoc(zoneSlug, versionNo, filePath, attachVersion = false)

    Returns the doc meta data and it's content.

    • When attachVersion=true. Doc will contain it's version node.
    const doc = await store.getDoc('guides', 'v4.0', 'introduction.md')

    getDocByPermalink(zoneSlug, versionNo, permalink, attachVersion = false)

    Returns the doc by it's permalink.

    • When attachVersion=true. Doc will contain it's version node.
    const doc = await store.getDocByPermalink('guides', 'v4.0', '/introduction')

    redirectedPermalink(zoneSlug, versionNo, permalink)

    Returns the new permalink at which the doc must be redirected.

    const redirectTo = store.redirectedPermalink('guides', 'v4.0', '/old-introduction')
    if (redirectTo) {
      // redirect to this location


    Sync the config file with the datastore.

    await store.syncConfig(require('./dimer.json'))


    Returns the synced config

    const config = store.getConfig()


    The datastore builds a search index based on elasticlunr, which can be used for indexing a individual version and then performing search queries for same.


    await store.indexVersion('guides', 'v4.0')

    And then later search

    const results = await store.search('guides', 'v4.0', 'Yaml')

    Following will be the output of search results

        ref: '/yaml-front-matter',
        title: {
          score: 3.10,
          marks: [
              type: 'raw',
              text: 'What is'
              type: 'mark',
              text: 'Yaml'
              type: 'raw',
              text: 'frontmatter'
        body: [
            score: 2.984,
            marks: [{
              type: 'mark',
              text: 'Yaml '
              type: 'raw',
              text: 'front matter is used for'

    Search languages

    The datastore has support for multiple languages to create the search index. Following is the list of allowed and supported languages.

    English en is the default language.

    • da (Danish)
    • de (German)
    • du (Dutch)
    • es (Spanish)
    • fi (Finnish)
    • fr (French)
    • hu (Hungarian)
    • it (Italian)
    • ja (Japanese)
    • no (Norwegian)
    • pt (Portuguese)
    • ro (Romanian)
    • ru (Russian)
    • sv (Swedish)
    • th (Thai)
    • tr (Turkish)
    await store.indexVersion('guides', 'v4.0', 'de')

    If your content is written in the mix of multiple languages, then you can pass an array of languages instead.

    await store.indexVersion('guides', 'v4.0', ['de', 'en'])

    Change log

    The change log can be found in the CHANGELOG.md file.


    Everyone is welcome to contribute. Please take a moment to review the contributing guidelines.

    Authors & License

    thetutlage and contributors.

    MIT License, see the included MIT file.




    npm i @dimerapp/datastore

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