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migrate-missing-layers.ts — tailwindcss Source File

Architecture documentation for migrate-missing-layers.ts, a typescript file in the tailwindcss codebase. 3 imports, 2 dependents.

File typescript UpgradeToolkit Codemods 3 imports 2 dependents 1 functions

Entity Profile

Dependency Diagram

graph LR
  22b81643_65c2_ce37_e597_13959f1f8254["migrate-missing-layers.ts"]
  ef204000_8998_5a6c_5455_324b37624713["segment.ts"]
  22b81643_65c2_ce37_e597_13959f1f8254 --> ef204000_8998_5a6c_5455_324b37624713
  f712ed47_45d4_4e5a_dd73_fdefa1da71da["segment"]
  22b81643_65c2_ce37_e597_13959f1f8254 --> f712ed47_45d4_4e5a_dd73_fdefa1da71da
  ba54c7c3_7b1e_9984_bfef_a693a3df2d84["postcss"]
  22b81643_65c2_ce37_e597_13959f1f8254 --> ba54c7c3_7b1e_9984_bfef_a693a3df2d84
  eb33b378_40f9_8aa4_2ce0_91f69294a359["migrate-missing-layers.test.ts"]
  eb33b378_40f9_8aa4_2ce0_91f69294a359 --> 22b81643_65c2_ce37_e597_13959f1f8254
  67f80607_3a88_f275_79a1_b9557100d939["migrate.ts"]
  67f80607_3a88_f275_79a1_b9557100d939 --> 22b81643_65c2_ce37_e597_13959f1f8254
  style 22b81643_65c2_ce37_e597_13959f1f8254 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

import { AtRule, type ChildNode, type Plugin, type Root } from 'postcss'
import { segment } from '../../../../tailwindcss/src/utils/segment'

export function migrateMissingLayers(): Plugin {
  function migrate(root: Root) {
    let lastLayer = ''
    let bucket: ChildNode[] = []
    let buckets: [layer: string, bucket: typeof bucket][] = []
    let firstLayerName: string | null = null

    root.each((node) => {
      if (node.type === 'atrule') {
        // Known Tailwind directives that should not be inside a layer.
        if (
          node.name === 'config' ||
          node.name === 'source' ||
          node.name === 'theme' ||
          node.name === 'utility' ||
          node.name === 'custom-variant' ||
          node.name === 'variant'
        ) {
          if (bucket.length > 0) {
            buckets.push([lastLayer, bucket.splice(0)])
          }
          return
        }

        // Base
        if (
          (node.name === 'tailwind' && node.params === 'base') ||
          (node.name === 'import' && node.params.match(/^["']tailwindcss\/base["']/))
        ) {
          if (bucket.length > 0) {
            buckets.push([lastLayer, bucket.splice(0)])
          }

          firstLayerName ??= 'base'
          lastLayer = 'base'
          return
        }

        // Components
        if (
          (node.name === 'tailwind' && node.params === 'components') ||
          (node.name === 'import' && node.params.match(/^["']tailwindcss\/components["']/))
        ) {
          if (bucket.length > 0) {
            buckets.push([lastLayer, bucket.splice(0)])
          }

          firstLayerName ??= 'components'
          lastLayer = 'components'
          return
        }

        // Utilities
        if (
          (node.name === 'tailwind' && node.params === 'utilities') ||
          (node.name === 'import' && node.params.match(/^["']tailwindcss\/utilities["']/))
        ) {
// ... (102 more lines)

Domain

Subdomains

Functions

Dependencies

Imported By

Source

Frequently Asked Questions

What does migrate-missing-layers.ts do?
migrate-missing-layers.ts is a source file in the tailwindcss codebase, written in typescript. It belongs to the UpgradeToolkit domain, Codemods subdomain.
What functions are defined in migrate-missing-layers.ts?
migrate-missing-layers.ts defines 1 function(s): migrateMissingLayers.
What does migrate-missing-layers.ts depend on?
migrate-missing-layers.ts imports 3 module(s): postcss, segment, segment.ts.
What files import migrate-missing-layers.ts?
migrate-missing-layers.ts is imported by 2 file(s): migrate-missing-layers.test.ts, migrate.ts.
Where is migrate-missing-layers.ts in the architecture?
migrate-missing-layers.ts is located at packages/@tailwindcss-upgrade/src/codemods/css/migrate-missing-layers.ts (domain: UpgradeToolkit, subdomain: Codemods, directory: packages/@tailwindcss-upgrade/src/codemods/css).

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