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features.js
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features.js
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import getApplicableVersions from '../../lib/get-applicable-versions.js'
export default function features(req, res, next) {
if (!req.context.page) return next()
// Determine whether the currentVersion belongs to the list of versions the feature is available in.
Object.keys(req.context.site.data.features).forEach((featureName) => {
const { versions } = req.context.site.data.features[featureName]
const applicableVersions = getApplicableVersions(versions, `data/features/${featureName}.yml`)
// Adding the resulting boolean to the context object gives us the ability to use
// `{% if featureName ... %}` conditionals in content files.
const isFeatureAvailableInCurrentVersion = applicableVersions.includes(
req.context.currentVersion
)
req.context[featureName] = isFeatureAvailableInCurrentVersion
})
return next()
}