• packages/tailwindcss/src/compat/config/create-compat-config.ts
• packages/tailwindcss/src/compat/config/deep-merge.ts
• packages/tailwindcss/src/compat/config/resolve-config.test.ts
• packages/tailwindcss/src/compat/config/resolve-config.ts
• packages/tailwindcss/src/compat/config/types.ts