replace mem with fast-memoize (#919)

* replace mem with fast-memoize

* lint

Co-authored-by: Raine Revere <[email protected]>

Author: 43081j

lib/package-managers/npm.js

@@ -6,7 +6,7 @@ const fs = require('fs')
 const semver = require('semver')
 const spawn = require('spawn-please')
 const pacote = require('pacote')
-const mem = require('mem')
+const memoize = require('fast-memoize')
 const libnpmconfig = require('libnpmconfig')
 const versionUtil = require('../version-util')
 const { print } = require('../logging')
@@ -148,10 +148,7 @@ async function viewMany(packageName, fields, currentVersion, { registry, timeout
 }
 
 /** Memoize viewMany for --deep performance. */
-const viewManyMemoized = mem(viewMany, {
-  cacheKey: ([packageName, fields, currentVersion]) =>
-    `${packageName}|${fields.join('|')}|${currentVersion}`
-})
+const viewManyMemoized = memoize(viewMany)
 
 /**
  * Returns true if the node engine requirement is satisfied or not specified for a given package version.

package-lock.json

@@ -59,6 +59,7 @@
     "cint": "^8.2.1",
     "cli-table": "^0.3.6",
     "commander": "^6.2.1",
+    "fast-memoize": "^2.5.2",
     "find-up": "5.0.0",
     "fp-and-or": "^0.1.3",
     "get-stdin": "^8.0.0",
@@ -68,7 +69,6 @@
     "jsonlines": "^0.1.1",
     "libnpmconfig": "^1.2.1",
     "lodash": "^4.17.21",
-    "mem": "^8.1.1",
     "minimatch": "^3.0.4",
     "p-map": "^4.0.0",
     "pacote": "^11.3.4",