code cleanup

src/hashcache.js

@@ -42,7 +42,6 @@ function createHashCache(dataDir) {
   let cache = null
   let dirty = false
   let savedAt = 0
-  const stats = { hits: 0, misses: 0 }
 
   function load() {
     if (cache) return cache
@@ -80,11 +79,7 @@ function createHashCache(dataDir) {
   // the cache dirty only when the timestamp is stale.
   function hit(rel, size, mtimeMs) {
     const known = load()[rel]
-    if (!known || known[0] !== size || known[1] !== mtimeMs || typeof known[2] !== 'string') {
-      stats.misses++
-      return null
-    }
-    stats.hits++
+    if (!known || known[0] !== size || known[1] !== mtimeMs || typeof known[2] !== 'string') return null
     if (Date.now() - (known[3] || 0) > 86400000) {
       known[3] = Date.now()
       dirty = true
@@ -111,35 +106,13 @@ function createHashCache(dataDir) {
     cache = null
     dirty = false
     savedAt = 0
-    stats.hits = 0
-    stats.misses = 0
     try {
       fs.rmSync(FILE, { force: true })
       fs.rmSync(`${FILE}.tmp`, { force: true })
     } catch {}
   }
 
-  // Dropping the memory copy makes the next lookup re-read from disk (tests).
-  function forget() {
-    cache = null
-    dirty = false
-  }
-
-  return {
-    HASH_ALGO,
-    hashFile,
-    hit,
-    remember,
-    cachedHash,
-    save,
-    clear,
-    forget,
-    stats: () => ({ ...stats, size: cache ? Object.keys(cache).length : 0, algo: HASH_ALGO }),
-    resetStats: () => {
-      stats.hits = 0
-      stats.misses = 0
-    }
-  }
+  return { HASH_ALGO, hashFile, hit, remember, cachedHash, save, clear }
 }
 
 module.exports = { createHashCache, hashFile, HASH_ALGO }