feat: add cache utils

Author: sonofmagic

packages/tailwindcss-patch/src/cache.ts

@@ -13,15 +13,37 @@ export function mkCacheDirectory(cacheDirectory: string) {
   return cacheDirectory
 }
 
+export function getCacheOptions(options: CacheOptions = {}): Required<CacheOptions> & { filename: string } {
+  const cwd = options.cwd ?? process.cwd()
+  const dir = options.dir ?? path.resolve(cwd, 'node_modules', '.cache', pkgName)
+  const file = options.file ?? 'classSet.json'
+  const filename = path.resolve(dir, file)
+  return {
+    cwd,
+    dir,
+    file,
+    filename
+  }
+}
+
 export function writeCache(data: Set<string>, options: CacheOptions = {}) {
   try {
-    const cwd = options.cwd ?? process.cwd()
-    const cacheDirectory = options.dir ?? path.resolve(cwd, 'node_modules', '.cache', pkgName)
-    const filename = path.resolve(cacheDirectory, options.file ?? 'classSet.json')
-    mkCacheDirectory(cacheDirectory)
+    const { dir, filename } = getCacheOptions(options)
+    mkCacheDirectory(dir)
     fs.writeFileSync(filename, JSON.stringify(Array.from(data), null, 2), 'utf-8')
     return filename
   } catch (error) {
     console.log(error)
   }
 }
+
+export function readCache(options: CacheOptions = {}) {
+  const { filename } = getCacheOptions(options)
+  try {
+    const data = fs.readFileSync(filename, 'utf-8')
+    return new Set<string>(JSON.parse(data))
+  } catch (error) {
+    console.log(error)
+    fs.unlinkSync(filename)
+  }
+}

packages/tailwindcss-patch/src/class.ts

@@ -1,7 +1,6 @@
 import { getClassCacheSet, getContexts, getTailwindcssEntry } from './exposeContext'
-import type { CacheOptions } from './type'
-
-type InternalCacheOptions = CacheOptions & { enable: boolean }
+import type { InternalCacheOptions } from './type'
+import { writeCache, readCache } from './cache'
 
 export interface TailwindcssPatcherOptions {
   cache?: InternalCacheOptions
@@ -28,7 +27,6 @@ export class TailwindcssPatcher {
       }
       case 'object': {
         cache = { ...options.cache, enable: true }
-
         break
       }
     }
@@ -39,8 +37,21 @@ export class TailwindcssPatcher {
     return getTailwindcssEntry(basedir)
   }
 
+  setCache(set: Set<string>) {
+    if (this.cache.enable) {
+      return writeCache(set, this.cache)
+    }
+  }
+
+  getCache() {
+    // if(this.cache.enable){
+    return readCache(this.cache)
+    // }
+  }
+
   getClassSet(basedir?: string) {
     const set = getClassCacheSet(basedir)
+    set.size && this.setCache(set)
     return set
   }
 

packages/tailwindcss-patch/src/type.ts

@@ -5,6 +5,8 @@ export interface CacheOptions {
   file?: string
 }
 
+export type InternalCacheOptions = CacheOptions & { enable: boolean }
+
 export interface PatchOptions {
   overwrite?: boolean
   paths?: string[]

packages/tailwindcss-patch/src/utils.ts

@@ -20,4 +20,4 @@ export function ensureFileContent(filepaths: string | string[]) {
 
 export function requireResolve(id: string, opts?: SyncOpts) {
   return sync(id, opts)
-}
+}