fix(npm): Use --parseable option to work around output quirks

index.js

@@ -113,7 +113,9 @@ function localBinPath (cwd) {
 
 module.exports._getEnv = getEnv
 function getEnv (opts) {
-  return child.exec(opts.npm, ['run', 'env']).then(require('dotenv').parse)
+  return child.exec(opts.npm, [
+    'run', 'env', '--parseable'
+  ]).then(require('dotenv').parse)
 }
 
 module.exports._ensurePackages = ensurePackages
@@ -165,7 +167,7 @@ function getExistingPath (command, opts) {
 module.exports._getNpmCache = getNpmCache
 function getNpmCache (opts) {
   return which(opts.npm).then(npmPath => {
-    const args = ['config', 'get', 'cache']
+    const args = ['config', 'get', 'cache', '--parseable']
     if (opts.userconfig) {
       args.push('--userconfig', child.escapeArg(opts.userconfig, true))
     }

test/index.js

@@ -160,12 +160,12 @@ test('getNpmCache', t => {
     }
   })._getNpmCache
   return getCache({npm}).then(cache => {
-    t.equal(cache, `${npm} config get cache`, 'requests cache from npm')
+    t.equal(cache, `${npm} config get cache --parseable`, 'requests cache from npm')
     return getCache({npm, userconfig})
   }).then(cache => {
     t.equal(
       cache,
-      `${npm} config get cache --userconfig ${
+      `${npm} config get cache --parseable --userconfig ${
         userconfig
       }-escaped-as-path-true`,
       'added userconfig if option present'