Migration 004: Add Prettier w/ configuration (#5031)

* Add Prettier to devDependencies

* Add .prettierrc

Co-Authored-By: ExE-Boss <3889017+ExE-Boss@users.noreply.github.com>

* Add .prettierignore

Co-Authored-By: ExE-Boss <3889017+ExE-Boss@users.noreply.github.com>

* Add Prettier to lint and fix scripts

* Remove check from lint for now (whoops)

* Limit prettier fixes to just JS/TS files

* Add migration script file

.prettierignore

@@ -0,0 +1,10 @@
+*.json
+!/*.json
+!/schemas/*.json
+
+LICENSE
+.*ignore
+.git*
+.editorconfig
+/package-lock.json
+/CODE_OF_CONDUCT.md

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "$schema": "http://json.schemastore.org/prettierrc",
+  "singleQuote": true,
+  "trailingComma": "all"
+}

package.json

@@ -35,12 +35,13 @@
     "compare-versions": "^3.5.1",
     "mdn-confluence": "^1.0.3",
     "ora": "^4.0.3",
+    "prettier": "^1.18.2",
     "yargs": "^15.0.2"
   },
   "scripts": {
     "confluence": "node ./node_modules/mdn-confluence/main/generate.es6.js --output-dir=. --bcd-module=./index.js",
     "lint": "node test/lint",
-    "fix": "node scripts/fix",
+    "fix": "node scripts/fix; prettier --write **/*.js **/*.ts",
     "stats": "node scripts/statistics",
     "release-notes": "node scripts/release-notes",
     "show-errors": "npm test 1> /dev/null",

scripts/migrations/004-prettify.js

@@ -0,0 +1,9 @@
+#!/usr/bin/env node
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+'use strict';
+
+const { exec } = require('child_process');
+
+exec("npx prettier --write **/*.js **/*.ts");