Formatting, linting initial setup

Using the Standard Typescript ESLint but specifically _not_ using `ts-standard` because it does not play nice with e.g. `vim-test`. See standard/ts-standard#273

Editorconfig, ESLint, and Prettier _can_ all play nicely together and using them together helps focus the purpose of changes. For more, see https://blog.theodo.com/2019/08/empower-your-dev-environment-with-eslint-prettier-and-editorconfig-with-no-conflicts/

.eslintrc.json

@@ -0,0 +1,21 @@
+{
+ "root": true,
+ "env": {
+ "browser": true,
+ "es2021": true
+ },
+ "extends": "standard-with-typescript",
+ "overrides": [
+ {
+ "files": ["*.js", "*.jsx", "*.ts", "*.tsx"],
+ "extends": ["standard-with-typescript", "prettier"]
+ }
+ ],
+ "parser": "@typescript-eslint/parser",
+ "parserOptions": {
+ "project": "./tsconfig.json"
+ },
+ "plugins": ["@typescript-eslint"],
+ "rules": {
+ }
+}

package.json

@@ -15,6 +15,15 @@
  "redis": "^4.6.11"
  },
  "devDependencies": {
+ "@typescript-eslint/eslint-plugin": "^6.14.0",
+ "eslint": "^8.55.0",
+ "eslint-config-prettier": "^9.1.0",
+ "eslint-config-standard-with-typescript": "^42.0.0",
+ "eslint-plugin-import": "^2.29.0",
+ "eslint-plugin-n": "^16.4.0",
+ "eslint-plugin-promise": "^6.1.1",
+ "prettier": "^3.1.1",
+ "prettier-standard": "^15.0.1",
  "typescript": "^5.3.3"
  }
 }