Improve the precommit hook (Azure#11107)

* Create rush-prettier autoinstaller

* Update the hook script to use rush command

* do not restage formatted files

* update .prettierignore to work with pretty-quick

.prettierignore

@@ -1,5 +1,5 @@
-src/generated/
-review/*.api.md
-*.yml
-*.yaml
-*.d.ts
+**/src/generated/
+**/review/*.api.md
+**/*.yml
+**/*.yaml
+**/*.d.ts

common/autoinstallers/rush-prettier/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "rush-prettier",
+  "version": "1.0.0",
+  "private": true,
+  "dependencies": {
+    "prettier": "^1.16.4",
+    "pretty-quick": "^3.0.0"
+  }
+}

common/config/rush/command-line.json

@@ -199,6 +199,16 @@
       "summary": "Unlink dependencies and purge downloaded node_modules",
       "safeForSimultaneousRushProcesses": true,
       "shellCommand": "rush unlink && rush purge"
+    },
+    {
+      "name": "prettier",
+      "commandKind": "global",
+      "summary": "Used by the pre-commit Git hook. This command invokes Prettier to reformat staged changes.",
+
+      "autoinstallerName": "rush-prettier",
+
+      // This will invoke common/autoinstallers/rush-prettier/node_modules/.bin/pretty-quick
+      "shellCommand": "pretty-quick --staged --no-restage"
     }
   ],
 

common/config/rush/common-versions.json

@@ -15,8 +15,7 @@
      * When someone asks for "^1.0.0" make sure they get "1.2.3" when working in this repo,
      * instead of the latest version.
      */
-    "prettier": "^1.16.4",
-    "precise-commits": "^1.0.2"
+    // "some-library": "1.2.3"
   },
   /**
    * When set to true, for all projects in the repo, all dependencies will be automatically added as preferredVersions,