Add a Prettier hook

Author: raszi

.editorconfig

@@ -7,6 +7,7 @@ indent_style = space
 indent_size = 2
 insert_final_newline = true
 trim_trailing_whitespace = true
+max_line_length = 120
 
 [*.md]
 trim_trailing_whitespace = false

.prettierignore

@@ -0,0 +1,2 @@
+package-lock.json
+devenv.lock

.prettierrc

@@ -16,6 +16,12 @@
       };
     };
 
+    # Use the Prettier from node_modules. Prettier reads the line length from .editorconfig.
+    prettier = {
+      enable = true;
+      settings.binPath = "./node_modules/.bin/prettier";
+    };
+
     # The hook list has no TypeScript hook, so the hook runs the npm script.
     tsc = {
       enable = true;