index.js

/**
 * Filter only tags object with specified types
 * @param {object} nodes  healthyTags
 * @param {string} type   Tag type
 */
const tagFilter = (nodes, type) => {
  const res = []
  _.each(nodes, node => {
    _.each(node.data.raw.tags, tag => {
      if (tag.type === type) {
        if (_.isEmpty(_.filter(res, node => node.id === tag.id))) {
          res.push(tag)
        }
      }
    })
  })
  return res
}

/**
 * Create listing pages for each tags
 * @param {string} pathPrefix   Tag path prefix
 * @param {object} nodes  Filtered tag object
 * @param {string} name        Tag name
 */
const createSlugPages = (pathPrefix, name, nodes) => {
  _.each(nodes, tag => {
    const qualifiedResults = []
    _.each(healthyResults, node => {
      if (!_.isEmpty(_.filter(node.data.raw.tags, {id: tag.id}))) qualifiedResults.push(node)
    })
    createPage({
      path: `${pathPrefix}/${tag.id}`,
      component: path.resolve('./src/templates/listing.js'),
      context: {
        subtitle: `${name}/${tag.name}`,
        raw: qualifiedResults,
        tagStack,
      },
    })
  })
}