bug(migrations): Sort migrations as ints not strings

Fixes #1185

Author: jeffreydwalter

migrate/migration.go

@@ -291,12 +291,22 @@ func WithNopMigration() MigrationOption {
 
 func sortAsc(ms MigrationSlice) {
 	sort.Slice(ms, func(i, j int) bool {
+		ni, ei := strconv.ParseInt(ms[i].Name, 10, 64)
+		nj, ej := strconv.ParseInt(ms[j].Name, 10, 64)
+		if ei == nil && ej == nil && ni != nj {
+			return ni < nj
+		}
 		return ms[i].Name < ms[j].Name
 	})
 }
 
 func sortDesc(ms MigrationSlice) {
 	sort.Slice(ms, func(i, j int) bool {
+		ni, ei := strconv.ParseInt(ms[i].Name, 10, 64)
+		nj, ej := strconv.ParseInt(ms[j].Name, 10, 64)
+		if ei == nil && ej == nil && ni != nj {
+			return ni > nj
+		}
 		return ms[i].Name > ms[j].Name
 	})
 }