fix: replace npm to pacote (#26)

Author: bjohansebas

lib/npm.js

@@ -1,5 +1,5 @@
 'use strict'
-const libnpm = require('libnpm')
+const pacote = require('pacote')
 
 const Packument = module.exports.Packument =
 class Packument {
@@ -12,7 +12,7 @@ class Packument {
 }
 
 module.exports.getPackument = async function getNpmPackument (packageName) {
-  const resp = await libnpm.packument(packageName)
+  const resp = await pacote.packument(packageName)
   return new Packument(resp)
 }
 
@@ -30,6 +30,6 @@ class Manifest {
   }
 }
 module.exports.getManifest = async function getNpmManifest (packageName) {
-  const resp = await libnpm.manifest(packageName)
+  const resp = await pacote.manifest(packageName)
   return new Manifest(resp)
 }

package.json

@@ -51,10 +51,9 @@
     "install": "^0.13.0",
     "js-yaml": "^3.13.1",
     "level": "^5.0.1",
-    "libnpm": "^2.0.1",
     "lit-element": "^2.2.1",
     "nighthawk": "^2.3.0-1",
-    "npm": "^6.10.3",
+    "pacote": "^20.0.0",
     "regenerator-runtime": "^0.13.3",
     "yargs": "^13.3.0"
   },