fixes for when `nowConfig` is null

bin/now-alias.js

@@ -301,7 +301,7 @@ async function realias(alias) {
     quiet: true // `quiet`
   })
 
-  const target = nowConfig.alias
+  const target = nowConfig && nowConfig.alias
 
   // the user never intended to support aliases from the package
   if (!target) {

bin/now-deploy.js

@@ -373,7 +373,7 @@ async function sync(token) {
   const now = new Now(apiUrl, token, {debug})
 
   // Merge `now.env` from package.json with `-e` arguments.
-  const pkgEnv = nowConfig.env
+  const pkgEnv = nowConfig && nowConfig.env
   const envs = [
     ...Object.keys(pkgEnv || {}).map(k => `${k}=${pkgEnv[k]}`),
     ...[].concat(argv.env || [])