mdast#Definition TypeScript Examples

The following examples show how to use mdast#Definition. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: index.ts    From gatsby-project-kb with MIT License 4 votes vote down vote up 
processWikiLinks = (
  { markdownAST }: { markdownAST: Node },
  options?: { titleToURLPath?: string; stripBrackets?: boolean, stripDefinitionExts?: string[] }
) => {
  const { stripDefinitionExts } = options
  const titleToURL = options?.titleToURLPath
    ? require(options.titleToURLPath)
    : defaultTitleToURLPath

  const definitions: { [identifier: string]: Definition } = {}

  const getLinkInfo = (definition: Definition) => {
    if (typeof definition.identifier !== 'string') return
    let linkUrl = definition.url
    const isExternalLink = /\/\//.test(linkUrl)
    let shouldReplace = !isExternalLink
    if (shouldReplace && stripDefinitionExts) {
      const extname = path.extname(definition.url || '')
      const matchedExtname = stripDefinitionExts.find((n) => extname === n)
      if (matchedExtname) {
        linkUrl = linkUrl.slice(0, linkUrl.length - matchedExtname.length)
      }
    }
    return {
      linkUrl,
      shouldReplace
    }
  }

  visit(markdownAST, `definition`, (node: Definition) => {
    if (!node.identifier || typeof node.identifier !== 'string') {
      return
    }
    definitions[node.identifier] = node
  })
  visit(markdownAST, `linkReference`, (node: LinkReferenceNode, index, parent) => {
    if (node.referenceType !== 'shortcut') {
      return
    }

    const definition = definitions[node.identifier]
    const linkInfo = definition ? getLinkInfo(definition): null
    const linkUrl = linkInfo ? linkInfo.linkUrl: definition?.url
    if ((linkInfo && !linkInfo.shouldReplace)) {
      // console.log('should not replace', definitions, node.identifier)
      return
    }

    const siblings = parent.children
    if (!siblings || !Array.isArray(siblings)) {
      return
    }
    const previous: StaticPhrasingContent = siblings[index - 1] as any
    const next: StaticPhrasingContent = siblings[index + 1] as any

    if (!(previous && next)) {
      return
    }

    if (!('value' in previous && 'value' in next)) {
      return
    }

    const previousValue = previous.value as string
    const nextValue = next.value as string

    if (
      previous.type !== 'text' ||
      previous.value[previousValue.length - 1] !== '[' ||
      next.type !== 'text' ||
      next.value[0] !== ']'
    ) {
      return
    }

    previous.value = previousValue.replace(/\[$/, '')
    next.value = nextValue.replace(/^\]/, '')

    ;(node as any).type = 'link' // cast it to link
    if (definition) {
      node.url = linkUrl
    } else {
      node.url = titleToURL(node.label as string)
    }
    node.title = node.label
    if (!options?.stripBrackets && Array.isArray(node.children)) {
      const firstChild = node.children[0];
      if (firstChild && 'value' in firstChild) {
        firstChild.value = `[[${firstChild.value}]]`
      }
    }
    delete node.label
    delete node.referenceType
    delete node.identifier
  })
}