migrateCached() — tailwindcss Function Reference

Source Code

packages/@tailwindcss-upgrade/src/codemods/template/migrate.ts lines 46–70

let migrateCached = new DefaultMap((baseDesignSystem: DesignSystem) => {
  let designSystem = prepareDesignSystemStorage(baseDesignSystem)
  let options = createSignatureOptions(designSystem)

  return new DefaultMap((userConfig: Config | null) => {
    return new DefaultMap(async (rawCandidate) => {
      let original = rawCandidate

      for (let migration of DEFAULT_MIGRATIONS) {
        rawCandidate = await migration(designSystem, userConfig, rawCandidate)
      }

      // Canonicalize the final migrated candidate to its final form
      rawCandidate = designSystem.canonicalizeCandidates([rawCandidate]).pop()!

      // Verify that the candidate actually makes sense at all. E.g.: `duration`
      // is not a valid candidate, but it will parse because `duration-<number>`
      // exists.
      let signature = designSystem.storage[UTILITY_SIGNATURE_KEY].get(options).get(rawCandidate)
      if (typeof signature !== 'string') return original

      return rawCandidate
    })
  })
})