Add Prettier

Everyone uses Prettier now and the only setting we tweak is to use tabs. The actual formatting will be in the next commit. This one should fail the updated CI script.

Author: robyoder

.github/workflows/build-and-test.yml

@@ -11,3 +11,4 @@ jobs:
       - run: npm ci
       - run: npm run build
       - run: npm test
+      - run: npm run prettier-check

.prettierignore

@@ -0,0 +1,3 @@
+dist
+package-lock.json
+**/*.js

package-lock.json

@@ -16,8 +16,13 @@
     "clean": "cd dist/; rm -rf *",
     "build": "npm run clean; cd src/; tsc -d; tsc -d -p tsconfig.es6.json; cd ../scripts; tsc",
     "prepublishOnly": "npm run build",
+    "prettier": "prettier . --write",
+    "prettier-check": "prettier . --check",
     "test": "mocha -r ts-node/register ./test/*.test.ts"
   },
+  "prettier": {
+    "useTabs": true
+  },
   "bin": {
     "extract-strings": "./scripts/extract-strings.js"
   },
@@ -36,6 +41,7 @@
     "chai": "^4.2.0",
     "glob": "^11.0.1",
     "mocha": "^11.1.0",
+    "prettier": "^3.5.3",
     "ts-node": "^10.9.2",
     "typescript": "5.5"
   },