chore(optimizer): debug info on cache dir handle process (#12858)

Author: sun0day

packages/vite/src/node/optimizer/index.ts

@@ -379,6 +379,7 @@ export async function loadCachedDepOptimizationMetadata(
   }
 
   // Start with a fresh cache
+  debug?.(colors.green(`removing old cache dir ${depsCacheDir}`))
   await fsp.rm(depsCacheDir, { recursive: true, force: true })
 }
 
@@ -473,6 +474,7 @@ export function runOptimizeDeps(
 
   // a hint for Node.js
   // all files in the cache directory should be recognized as ES modules
+  debug?.(colors.green(`creating package.json in ${processingCacheDir}`))
   fs.writeFileSync(
     path.resolve(processingCacheDir, 'package.json'),
     `{\n  "type": "module"\n}\n`,
@@ -499,6 +501,7 @@ export function runOptimizeDeps(
       cleaned = true
       // No need to wait, we can clean up in the background because temp folders
       // are unique per run
+      debug?.(colors.green(`removing cache dir ${processingCacheDir}`))
       fsp.rm(processingCacheDir, { recursive: true, force: true }).catch(() => {
         // Ignore errors
       })
@@ -521,6 +524,7 @@ export function runOptimizeDeps(
       // Write metadata file, then commit the processing folder to the global deps cache
       // Rewire the file paths from the temporal processing dir to the final deps cache dir
       const dataPath = path.join(processingCacheDir, '_metadata.json')
+      debug?.(colors.green(`creating _metadata.json in ${processingCacheDir}`))
       fs.writeFileSync(
         dataPath,
         stringifyDepsOptimizerMetadata(metadata, depsCacheDir),
@@ -537,16 +541,30 @@ export function runOptimizeDeps(
       const temporalPath = depsCacheDir + getTempSuffix()
       const depsCacheDirPresent = fs.existsSync(depsCacheDir)
       if (isWindows) {
-        if (depsCacheDirPresent) await safeRename(depsCacheDir, temporalPath)
+        if (depsCacheDirPresent) {
+          debug?.(colors.green(`renaming ${depsCacheDir} to ${temporalPath}`))
+          await safeRename(depsCacheDir, temporalPath)
+        }
+        debug?.(
+          colors.green(`renaming ${processingCacheDir} to ${depsCacheDir}`),
+        )
         await safeRename(processingCacheDir, depsCacheDir)
       } else {
-        if (depsCacheDirPresent) fs.renameSync(depsCacheDir, temporalPath)
+        if (depsCacheDirPresent) {
+          debug?.(colors.green(`renaming ${depsCacheDir} to ${temporalPath}`))
+          fs.renameSync(depsCacheDir, temporalPath)
+        }
+        debug?.(
+          colors.green(`renaming ${processingCacheDir} to ${depsCacheDir}`),
+        )
         fs.renameSync(processingCacheDir, depsCacheDir)
       }
 
       // Delete temporal path in the background
-      if (depsCacheDirPresent)
+      if (depsCacheDirPresent) {
+        debug?.(colors.green(`removing cache temp dir ${temporalPath}`))
         fsp.rm(temporalPath, { recursive: true, force: true })
+      }
     },
   }
 
@@ -1309,6 +1327,7 @@ export async function cleanupDepsCacheStaleDirs(
             stats?.mtime &&
             Date.now() - stats.mtime.getTime() > MAX_TEMP_DIR_AGE_MS
           ) {
+            debug?.(`removing stale cache temp dir ${tempDirPath}`)
             await fsp.rm(tempDirPath, { recursive: true, force: true })
           }
         }