зеркало из https://github.com/github/docs.git
93 строки
2.1 KiB
JavaScript
93 строки
2.1 KiB
JavaScript
const parse = require('@github-docs/frontmatter')
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const layoutNames = Object.keys(require('./layouts')).concat([false])
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const semverRange = {
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type: 'string',
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conform: require('semver').validRange,
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message: 'Must be a valid SemVer range'
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}
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const versionIds = Object.keys(require('./all-versions'))
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const schema = {
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properties: {
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title: {
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type: 'string',
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required: true
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},
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shortTitle: {
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type: 'string'
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},
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intro: {
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type: 'string'
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},
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product: {
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type: 'string'
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},
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permissions: {
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type: 'string'
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},
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// true by default on articles, false on all other content
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showMiniToc: {
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type: 'boolean'
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},
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miniTocMaxHeadingLevel: {
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type: 'number',
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default: 3,
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minimum: 2,
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maximum: 4
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},
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mapTopic: {
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type: 'boolean'
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},
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// The `hidden` frontmatter property is no longer used, but leaving it here
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// with an enum of `[false]` will help us catch any possible regressions.
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hidden: {
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type: 'boolean',
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enum: [false]
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},
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layout: {
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type: ['string', 'boolean'],
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enum: layoutNames,
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message: 'must be the filename of an existing layout file, or `false` for no layout'
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},
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redirect_from: {
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type: ['array', 'string']
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},
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gettingStartedLinks: {
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type: 'array'
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},
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popularLinks: {
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type: 'array'
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},
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guideLinks: {
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type: 'array'
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},
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allowTitleToDifferFromFilename: {
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type: 'boolean'
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}
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}
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}
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schema.properties.versions = {
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type: ['object', 'string'], // allow a '*' string to indicate all versions
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required: true,
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properties: versionIds.reduce((acc, versionId) => {
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acc[versionId] = semverRange
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return acc
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}, {})
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}
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function frontmatter (markdown, opts = {}) {
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const defaults = {
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schema,
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validateKeyNames: true,
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validateKeyOrder: false // TODO: enable this once we've sorted all the keys. See https://github.com/github/docs-internal/issues/9658
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}
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return parse(markdown, Object.assign({}, defaults, opts))
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}
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// attach the schema object so it can be `require`d elsewhere.
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frontmatter.schema = schema
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module.exports = frontmatter
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