Fixed race condition in server init

go.mod

@@ -12,7 +12,6 @@ require (
 	github.com/mattn/go-tty v0.0.0-20190424173100-523744f04859 // indirect
 	github.com/otiai10/copy v1.0.1
 	github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95 // indirect
-	github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
 	github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942 // indirect
 	github.com/stretchr/testify v1.3.0 // indirect
 	gopkg.in/yaml.v2 v2.2.2

go.sum

@@ -24,17 +24,15 @@ github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95 h1:+OLn68pqasWca0z5ry
 github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95/go.mod h1:9qAhocn7zKJG+0mI8eUu6xqkFDYS2kb2saOteoSB3cE=
 github.com/otiai10/mint v1.2.3 h1:PsrRBmrxR68kyNu6YlqYHbNlItc5vOkuS6LBEsNttVA=
 github.com/otiai10/mint v1.2.3/go.mod h1:YnfyPNhBvnY8bW4SGQHCs/aAFhkgySlMZbrF5U0bOVw=
-github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4 h1:49lOXmGaUpV9Fz3gd7TFZY106KVlPVa5jcYD1gaQf98=
-github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4/go.mod h1:4OwLy04Bl9Ef3GJJCoec+30X3LQs/0/m4HFRt/2LUSA=
 github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942 h1:A7GG7zcGjl3jqAqGPmcNjd/D9hzL95SuoOQAaFNdLU0=
 github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942/go.mod h1:eCbImbZ95eXtAUIbLAuAVnBnwf83mjf6QIVH8SHYwqQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/screepers/screeps-launcher v0.0.0-20190201034215-eb46ae568b78 h1:mUtHhYtzgQYZs/2dThwvXwHyOZ2+5be6LdJvcB11xz4=
 github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223 h1:DH4skfRX4EBpamg7iV4ZlCpblAHI6s6TDM39bFZumv8=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

launcher/launcher.go

@@ -25,8 +25,11 @@ func (l *Launcher) Prepare() {
 	}
 	l.config = c
 	l.needsInit = false
-	if _, err := os.Stat("package.json"); os.IsNotExist(err) {
-		l.needsInit = true
+	checkFiles := []string{"package.json", "assets", "db.json", ".screepsrc", "example-mods"}
+	for _, file := range checkFiles {
+		if _, err := os.Stat(file); os.IsNotExist(err) {
+			l.needsInit = true
+		}
 	}
 }