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

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)
 }