improvements

.editorconfig

@@ -0,0 +1,35 @@
+root = true
+
+[*]
+indent_style = tab
+indent_size = 4
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+charset = utf-8
+
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{js,ts,svg,md}]
+charset = utf-8
+
+[*.{ts,js}]
+indent_style = tab
+indent_size = 4
+
+[package.json]
+indent_style = space
+indent_size = 2
+
+[*.{sass,scss}]
+indent_style = space
+indent_size = 2
+
+[*.{css,less}]
+indent_style = space
+indent_size = 2
+
+[*.{json,yml,yaml}]
+indent_style = space