Better dev server integration

server/utils/getFileContentType.js

@@ -0,0 +1,13 @@
+const mime = require("mime")
+
+mime.define({
+  "text/plain": ["authors", "changes", "license", "makefile", "patents", "readme", "ts", "flow"]
+})
+
+const TextFiles = /\/?(\.[a-z]*rc|\.git[a-z]*|\.[a-z]*ignore)$/i
+
+function getFileContentType(file) {
+  return TextFiles.test(file) ? "text/plain" : mime.lookup(file)
+}
+
+module.exports = getFileContentType