add prettier and eslint

.eslintrc.js

@@ -0,0 +1,19 @@
+module.exports = {
+    parser: "@typescript-eslint/parser", // Specifies the ESLint parser
+
+    parserOptions: {
+        ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
+        sourceType: "module", // Allows for the use of imports
+    },
+
+    extends: [
+        "plugin:@typescript-eslint/recommended", // Uses the recommended rules from the @typescript-eslint/eslint-plugin
+        "prettier/@typescript-eslint", // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
+        "plugin:prettier/recommended", // Enables eslint-plugin-prettier and eslint-config-prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
+    ],
+
+    rules: {
+        // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
+        // e.g. "@typescript-eslint/explicit-function-return-type": "off",
+    },
+};

.prettierrc

@@ -1,7 +0,0 @@
-{
-    "trailingComma": "es5",
-    "tabWidth": 4,
-    "semi": true,
-    "singleQuote": false,
-    "printWidth": 120
-}

.prettierrc.js

@@ -0,0 +1,8 @@
+module.exports = {
+    semi: true,
+    trailingComma: "all",
+    singleQuote: false,
+    printWidth: 120,
+    tabWidth: 4,
+    editorconfig: true
+};

package.json

@@ -8,13 +8,19 @@
         "build": "gulp build && gulp link",
         "build:watch": "gulp watch",
         "clean": "gulp clean && gulp link --clean",
-        "update": "npm install --save-dev gitlab:foundry-projects/foundry-pc/foundry-pc-types"
+        "update": "npm install --save-dev gitlab:foundry-projects/foundry-pc/foundry-pc-types",
+        "lint": "eslint '*/**/*.{js,ts,tsx}' --quiet --fix"
     },
     "author": "",
     "license": "",
     "devDependencies": {
+        "@typescript-eslint/eslint-plugin": "^4.11.0",
+        "@typescript-eslint/parser": "^4.11.0",
         "archiver": "^5.1.0",
         "chalk": "^4.1.0",
+        "eslint": "^7.16.0",
+        "eslint-config-prettier": "^7.1.0",
+        "eslint-plugin-prettier": "^3.3.0",
         "foundry-pc-types": "gitlab:foundry-projects/foundry-pc/foundry-pc-types",
         "fs-extra": "^9.0.1",
         "gulp": "^4.0.2",
@@ -23,6 +29,7 @@
         "gulp-sass": "^4.1.0",
         "gulp-typescript": "^6.0.0-alpha.1",
         "json-stringify-pretty-compact": "^2.0.0",
+        "prettier": "^2.2.1",
         "sass": "^1.30.0",
         "typescript": "^4.1.3",
         "yargs": "^16.2.0"