.eslintrc.js

module.exports = {
  "root": true,

  "plugins": [
    "sort-imports-es6-autofix",
    "@typescript-eslint",
  ],

  "env": {
    "browser": true,
    "es6": true
  },

  "parser": "@typescript-eslint/parser",

  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/eslint-recommended",
  ],

  "rules": {
    // basics
    "indent": [ "error", 2, { // indentation should be 2 spaces
      "flatTernaryExpressions": true, // ternary should be performed in flat
    } ], // it forces 2 spaces indentation
    "linebreak-style": [ "error", "unix" ], // fuck you, CRLF
    "quotes": [ "error", "single" ], // quotes must be single
    "eqeqeq": [ "error", "always", { "null": "ignore" } ], // fuck you, `==`
    "max-len": [ "error", { // don't be too long, code
      "code": 100,
      "ignoreComments": true, // comments are okay
      "ignoreStrings": true, // strings are okay
      "ignoreTemplateLiterals": true, // templates are also okay
      "ignoreRegExpLiterals": true, // regexs are also okay too
    } ],
    "sort-imports-es6-autofix/sort-imports-es6": [ "error" ], // imports have to be ordered
    "eol-last": [ "error", "always" ], // eof newline is cool

    // variables
    "@typescript-eslint/no-unused-vars": [
      "warn",
      {
        "argsIgnorePattern": "^_",
        "destructuredArrayIgnorePattern": "^_",
      },
    ], // draw yellow line under unused vars
    "no-var": [ "error" ], // fuck you, var
    "prefer-const": [ "error" ], // const is better than let

    // omittables
    "semi": [ "error", "always" ], // semicolon is required
    "curly": [ "error" ], // it kills `if (foo) bar++;`
    "arrow-parens": [ "error", "always" ], // it kills `arg => { func(); }`

    // force spacing (I prefer super sparse code!)
    "array-bracket-spacing": [ "error", "always" ], // it kills `[val1, val2]`
    "arrow-spacing": [ "error", { "before": true, "after": true } ], // it kills `( arg )=>{ func(); }`
    "block-spacing": [ "error", "always" ], // it kills `if ( cond ) {func();}`
    "comma-spacing": [ "error", { "before": false, "after": true } ], // it kills `func( arg1,arg2 )`
    "computed-property-spacing": [ "error", "always" ], // it kills `arr[i]`
    "key-spacing": [ "error", { "beforeColon": false, "afterColon": true } ], // it kills `{ key:val }`
    "keyword-spacing": [ "error", { "before": true, "after": true } ], // it kills `}else{`
    "object-curly-spacing": [ "error", "always" ], // it kills `{key: val}`
    "semi-spacing": [ "error", { "before": false, "after": true } ], // it kills `func1();func2();`
    "space-before-blocks": [ "error", "always" ], // it kills `if (cond){`
    "space-in-parens": [ "error", "always" ], // it kills `func (arg)`
    "space-infix-ops": [ "error" ], // it kills val1+val2
    "space-unary-ops": [ "error", { "words": true, "nonwords": false, "overrides": { "++": true, "--": true } } ], // it kills `val++`
    "spaced-comment": [ "error", "always", { "markers": [ "/", "!" ] } ], // it kills `//this is comment`

    // ban spacing
    "func-call-spacing": [ "error", "never" ], // no-trailing-spaces. yea.
    "no-trailing-spaces": [ "error" ], // no-trailing-spaces. yea.
    "no-whitespace-before-property": [ "error" ], // it kills `obj .key`
    "space-before-function-paren": [ "error", { "anonymous": "never", "named": "never", "asyncArrow": "always" } ], // it kills `func ()`

    // others
    "no-eval": [ "error" ], // I don't think we're going to use the eval
    "no-implied-eval": [ "warn" ], // ok don't
    "no-console": [ "error", { allow: [ "info", "warn", "error" ] } ], // don't forget to remove `console.log` !

    // typescript-specifics
    "@typescript-eslint/no-this-alias": [ "off" ], // we want to substitute `this` to variables for size
    "@typescript-eslint/no-explicit-any": [ "off" ], // Three.js sometimes forces us to deal with anys
    "@typescript-eslint/no-non-null-assertion": [ "off" ], // Three.js sometimes forces us to deal with bangs
    "@typescript-eslint/explicit-function-return-type": [ "error", { "allowExpressions": true } ], // return type is required
    "@typescript-eslint/explicit-member-accessibility": [ "error" ], // `public` / `private` for members and methods are required
  }
};