.eslintrc.json

// we use the deno base config with good old standardjs style instead of prettier for now, but will clean this up in next iteration
{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "createDefaultProgram": true
      // TODO: enable when svelte compiler supports ts :
      // tsconfigRootDir: __dirname,
      // project: ['./tsconfig.json'],
      // extraFileExtensions: ['.svelte']
  },
  "plugins": ["@typescript-eslint", "svelte3", "functional"],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "ignorePatterns": ["node_modules", "**/build/**", "**/bundle*", "runtime/**", "app/src/deps/**"],
  "rules": {
    // "no-console": "error",
    "@typescript-eslint/prefer-nullish-coalescing": "error",
    "@typescript-eslint/no-explicit-any": ["off"],
    "spaced-comment": ["error", "always"],
    "no-multi-spaces": "error",
    "no-tabs": "error",
    "curly": "error",
    "no-restricted-imports": ["error", {
      "patterns": ["../..*"]
    }],
    "space-infix-ops": "error",
    "functional/no-throw-statement": "error",
    "functional/no-class": "error",
    "functional/no-this-expression": "error",
    "@typescript-eslint/no-inferrable-types": "error",
    "no-invalid-this": "error",
    "eol-last": ["error", "always"],
    "no-trailing-spaces": "error",
    "space-before-blocks": ["error", "always"],
    "comma-dangle": ["error", "never"],
    "keyword-spacing": ["error", { "before": true , "after": true }],
    "arrow-spacing": ["error", { "before": true, "after": true }],
    "space-before-function-paren": ["error", {
        "anonymous": "always",
        "named": "always",
        "asyncArrow": "always"
    }],
    "indent": ["error", 2, { "SwitchCase": 1 }],
    "semi": ["error", "never"],
    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
    "@typescript-eslint/array-type": ["error", { "default": "array-simple" }],
    "@typescript-eslint/ban-ts-comment": ["off"],
    "@typescript-eslint/explicit-member-accessibility": ["off"],
    "@typescript-eslint/explicit-module-boundary-types": ["off"],
    "@typescript-eslint/no-non-null-assertion": ["off"],
    "@typescript-eslint/no-use-before-define": ["off"],
    "@typescript-eslint/no-parameter-properties": ["off"],
    "@typescript-eslint/no-unused-vars": [
      "error",
      { "argsIgnorePattern": "^_", "varsIgnorePattern": "^_" }
    ],
    "@typescript-eslint/ban-ts-ignore": ["off"],
    "@typescript-eslint/no-empty-function": ["off"],
    "no-return-await": "error",
    "require-await": "error",
    "no-async-promise-executor": "error"
  },
  "settings": {
    "svelte3/typescript": true
  },
  "overrides": [
    {
      "files": ["*.svelte"],
      "processor": "svelte3/svelte3"
    },
    {
      "files": ["*.js"],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": ["off"]
      }
    }
  ]
}