fix(pkglock): improve perf a bit by using cacache memoization

Author: zkat

lib/pkglock.js

@@ -172,13 +172,13 @@ async function read ({ cache, hash, pkg, resolvedPath, isFile }) {
     throw new Error('read() requires a fully-resolved pkgmap file address')
   }
   try {
-    return ccGet.byDigest(cache, hash)
+    return ccGet.byDigest(cache, hash, { memoize: true })
   } catch (err) {
     const newResolved = await fetchPackage(cache, pkg, hash)
     cache = newResolved.cache
     hash = newResolved.hash
     pkg = newResolved.pkg
-    return ccGet.byDigest(cache, hash)
+    return ccGet.byDigest(cache, hash, { memoize: true })
   }
 }
 
@@ -188,13 +188,13 @@ function readSync ({ cache, hash, pkg, resolvedPath, isFile }) {
     throw new Error('readSync() requires a fully-resolved pkgmap file address')
   }
   try {
-    return ccGet.sync.byDigest(cache, hash)
+    return ccGet.sync.byDigest(cache, hash, { memoize: true })
   } catch (err) {
     const newResolved = fetchPackageSync(cache, pkg, hash)
     cache = newResolved.cache
     hash = newResolved.hash
     pkg = newResolved.pkg
-    return ccGet.sync.byDigest(cache, hash)
+    return ccGet.sync.byDigest(cache, hash, { memoize: true })
   }
 }
 
@@ -256,10 +256,10 @@ function statSync ({ cache, hash, pkg, resolvedPath, isDir }, verify) {
   }
   let info
   try {
-    info = ccGet.hasContent.sync(cache, hash)
+    info = ccGet.hasContent.sync(cache, hash, { memoize: true })
   } catch (err) {
     fetchPackageSync(cache, pkg, hash)
-    info = ccGet.hasContent.sync(cache, hash)
+    info = ccGet.hasContent.sync(cache, hash, { memoize: true })
   }
   if (!info) {
     return false
@@ -289,7 +289,7 @@ function statSync ({ cache, hash, pkg, resolvedPath, isDir }, verify) {
 }
 
 function getPkg (cache, spec, scope, pkgName) {
-  const { metadata } = ccGet.sync(cache, depKey(spec, scope.dependencies[pkgName]))
+  const { metadata } = ccGet.sync(cache, depKey(spec, scope.dependencies[pkgName]), { memoize: true })
   return JSON.parse(metadata)
 }