.eslintrc.js

module.exports = {
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": [
      "./tsconfig.json"
    ],
    "tsconfigRootDir": __dirname,
    "sourceType": "module",
  },
  "plugins": ["@typescript-eslint", "@stylistic/eslint-plugin"],
  "extends": [],
  "ignorePatterns": ["*/dist", "*/theme/**/*.js", ".eslintrc.js", "*/_templates/*.js", "*/template/**/*.js", "examples/*", "scripts/*", "doc/_static/*.js"],
  "rules": {
    "@typescript-eslint/ban-types": ["error", {
      "types": {
        "Function": false,
        "object": false,
        "{}": false,
      }
    }],
    "@typescript-eslint/consistent-type-assertions": "error",
    "@typescript-eslint/consistent-type-imports": ["error", {
      "prefer": "type-imports",
      "fixStyle": "separate-type-imports",
    }],
    "@typescript-eslint/member-delimiter-style": ["error", {
      "multiline": {
        "delimiter": "none",
        "requireLast": true,
      },
      "singleline": {
        "delimiter": "comma",
        "requireLast": false,
      }
    }],
    "@typescript-eslint/semi": ["error", "never"],
    "@typescript-eslint/type-annotation-spacing": ["error"],
    "@typescript-eslint/no-unnecessary-condition": ["warn", {"allowConstantLoopConditions": true}],
    "@typescript-eslint/strict-boolean-expressions": ["warn", {
      "allowAny": true,
      "allowString": false,
      "allowNumber": false,
      "allowNullableObject": false,
      "allowNullableBoolean": false,
      "allowNullableString": false,
      "allowNullableNumber": false,
    }],
    "@typescript-eslint/no-unnecessary-type-assertion": ["error"],
    "@typescript-eslint/no-unnecessary-type-constraint": ["error"],
    "@typescript-eslint/switch-exhaustiveness-check": ["error"],
    "no-console": ["error", { "allow": ["warn", "error"] }],
    "no-self-assign": ["error", {"props": false}],
    "brace-style": ["error", "1tbs", {"allowSingleLine": true}],
    "comma-dangle": ["off"],
    "@typescript-eslint/comma-dangle": ["error", {
      "arrays": "always-multiline",
      "objects": "always-multiline",
      "imports": "always-multiline",
      "exports": "always-multiline",
      "functions": "always-multiline",
      "enums": "always-multiline",
      "generics": "always-multiline",
      "tuples": "always-multiline",
    }],
    "comma-spacing": ["error", {"before": false, "after": true}],
    "dot-notation": "error",
    "eol-last": ["error", "always"],
    "no-irregular-whitespace": ["error"],
    "@stylistic/indent": ["error", 2],
    "@stylistic/no-mixed-spaces-and-tabs": ["error"],
    "@typescript-eslint/indent": ["error", 2, {
      "SwitchCase": 1,
      "outerIIFEBody": 1,
      "ArrayExpression": "first",
      "ObjectExpression": "first",
      "ImportDeclaration": "first",
      "VariableDeclarator": "first",
      "CallExpression": {"arguments": 1},
      "FunctionDeclaration": {"body": 1, "parameters": "off"},
      "FunctionExpression": {"body": 1, "parameters": "off"},
      "ignoredNodes": ["ConditionalExpression"],
    }],
    "@typescript-eslint/no-floating-promises": ["warn", {ignoreVoid: true}],
    "no-debugger": "error",
    "no-floating-decimal": ["error"],
    "no-multiple-empty-lines": ["error", {"max": 1, "maxBOF": 0, "maxEOF": 0}],
    "no-new-wrappers": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": ["error"],
    "no-var": "error",
    "object-shorthand": "error",
    "prefer-const": ["error", {"destructuring": "all"}],
    "prefer-exponentiation-operator": "error",
    "quote-props": ["error", "as-needed"],
    "object-curly-spacing": ["error", "never"],
    "space-before-blocks": ["error", "always"],
    "space-before-function-paren": ["error", {
      "anonymous": "never",
      "named": "never",
      "asyncArrow": "always",
    }],
    "space-in-parens": ["error", "never"],
    "keyword-spacing": ["error", {"before": true, "after": true}],
    "func-call-spacing": ["error", "never"],
    "no-whitespace-before-property": ["error"],
    "block-spacing": ["error", "always"],
    "key-spacing": ["error", {
      "beforeColon": false,
      "afterColon": true,
      "mode": "minimum",
    }],
    "space-unary-ops": ["error", {
      "words": true,
      "nonwords": false,
      "overrides": {},
    }],
    "guard-for-in": ["warn"],
    "quotes": ["error", "double", {"avoidEscape": true, "allowTemplateLiterals": true}],
    "curly": ["error", "all"],
    "prefer-template": ["error"],
    "generator-star-spacing": ["error", {
      "before": false,
      "after": true,
      "anonymous": {"before": false, "after": true},
      "method": {"before": true, "after": false},
    }],
    "yield-star-spacing": ["error", {"before": false, "after": true}],
  },
}