feat: add prettier configurations

.prettierignore

@@ -0,0 +1,43 @@
+#-------------------------------------------------------------------------------------------------------------------
+# Keep this section in sync with .gitignore
+#-------------------------------------------------------------------------------------------------------------------
+
+👋 (copy + paste your .gitignore file contents here) 👋
+
+#-------------------------------------------------------------------------------------------------------------------
+# Prettier-specific overrides
+#-------------------------------------------------------------------------------------------------------------------
+
+# Rush files
+common/changes/
+common/scripts/
+common/config/
+common/rush/
+common/temp/
+
+CHANGELOG.*
+
+# Package manager files
+pnpm-lock.yaml
+yarn.lock
+package-lock.json
+shrinkwrap.json
+
+# Build outputs
+dist
+lib
+docs
+docusaurus
+xchangelog
+
+# Prettier reformats code blocks inside Markdown, which affects rendered output
+*.md
+
+# Others
+
+.vscode
+.github
+
+node_modules
+.eslintrc
+*.html

.prettierrc.js

@@ -0,0 +1,4 @@
+module.exports = {
+  printWidth: 100,
+  trailingComma: "none"
+};

CONTRIBUTING.md

@@ -59,7 +59,13 @@ We appreciate any help you can offer. Please follow the guidelines on styling an
 
 #### Styling
 
-We are using [prettier] to format all our code with only one custom setting: `--print-width 100`. We are switching to version 2.
+We are using [prettier] to format all our code with below simple configuration. We are using version 2 for prettier.
+```js
+module.exports = {
+  printWidth: 100,
+  trailingComma: "none"
+};
+```
 
 > If you are making changes to a file that has not been updated yet, please commit the format first before making your changes.
 

commitlint.config.js

@@ -1,5 +1,3 @@
 module.exports = {
-    extends: [
-        '@commitlint/config-conventional'
-    ]
-}
+  extends: ["@commitlint/config-conventional"]
+};