.eslintrc.json

{
	"extends": [
		"eslint:recommended",
		"plugin:@typescript-eslint/recommended"
	],
	"env": {
		"browser": true,
		"mocha": true,
		"es6": true,
		"node": true
	},
	"parser": "@typescript-eslint/parser",
	"parserOptions": {
		"ecmaVersion": 2018,
		"project": "tsconfig-eslint.json"
	},
	"plugins": [
		"@typescript-eslint/eslint-plugin"
	],
	"rules": {
		/* Best practices */
		"curly": "error",
		"dot-location": ["warn", "property"],
		"dot-notation": "error",
		"eqeqeq": ["error", "smart"],
		"no-eval": "error",
		"no-extend-native": "error",
		"no-fallthrough": "warn",
		"no-floating-decimal": "warn",
		"no-implied-eval": "error",
		"no-iterator": "error",
		"no-loop-func": "warn",
		"no-multi-str": "error",
		"no-new-func": "error",
		"no-new-wrappers": "error",
		"no-octal-escape": "error",
		"no-proto": "error",
		"no-return-assign": "error",
		"no-script-url": "error",
		"no-self-compare": "warn",
		"no-sequences": "error",
		"no-throw-literal": "error",
		"no-unmodified-loop-condition": "error",
		"no-unused-expressions": "error",
		"no-useless-concat": "warn",
		"no-useless-return": "warn",
		"no-void": "error",
		"no-warning-comments": "warn",
		"prefer-promise-reject-errors": "error",
		"require-unicode-regexp": "error",
		"no-undefined": "error",

		/* Stylistic */
		"array-bracket-newline": ["warn", { "multiline": true }],
		"block-spacing": "warn",
		"capitalized-comments": "warn",
		"comma-dangle": "warn",
		"comma-spacing": "warn",
		"comma-style": "warn",
		"computed-property-spacing": "warn",
		"consistent-this": "error",
		"eol-last": "warn",
		"func-call-spacing": "warn",
		"function-call-argument-newline": ["warn", "consistent"],
		"function-paren-newline": ["error", "multiline"],
		"implicit-arrow-linebreak": "warn",
		"key-spacing": ["warn", { "mode": "minimum" }],
		"keyword-spacing": "warn",
		"linebreak-style": "warn",
		"lines-around-comment": "warn",
		"lines-between-class-members": "warn",
		"max-len": ["warn", {"code": 100}],
		"max-statements-per-line": "warn",
		"multiline-comment-style": "warn",
		"new-cap": "error",
		"new-parens": "error",
		"no-lonely-if": "error",
		"no-multiple-empty-lines": "warn",
		"no-nested-ternary": "error",
		"no-trailing-spaces": "warn",
		"no-whitespace-before-property": "warn",
		"object-curly-newline": "warn",
		"object-property-newline": "warn",
		"semi-spacing": "warn",
		"semi-style": "warn",
		"space-before-blocks": "warn",
		"space-before-function-paren": ["warn", {"anonymous": "never", "named": "never", "asyncArrow": "always"}],
		"space-in-parens": "warn",
		"space-infix-ops": "warn",
		"space-unary-ops": ["warn", {"words": true, "nonwords": false}],
		"spaced-comment": "warn",
		"switch-colon-spacing": "warn",
		"unicode-bom": "error",

		/* ECMAScript 6 */
		"arrow-parens": "error",
		"arrow-spacing": "warn",
		"no-confusing-arrow": "error",
		"no-useless-computed-key": "error",
		"no-useless-rename": "error",
		"prefer-numeric-literals": "error",
		"template-curly-spacing": "warn",
		"yield-star-spacing": "warn",

		/* Typescript-specific */
		"@typescript-eslint/consistent-type-assertions": [ "error", { "assertionStyle": "angle-bracket" } ],
		"@typescript-eslint/no-non-null-assertion": "off",
		"@typescript-eslint/no-inferrable-types": "off",
		"@typescript-eslint/brace-style": "warn",
		"@typescript-eslint/consistent-type-definitions": ["error", "interface"],
		"@typescript-eslint/explicit-function-return-type": "error",
		"@typescript-eslint/explicit-member-accessibility": "error",
		"@typescript-eslint/func-call-spacing": "warn",
		"@typescript-eslint/indent": ["warn", "tab", { "MemberExpression": 2, "CallExpression": {"arguments": 2}, "SwitchCase": 1, "FunctionExpression": {"body": 1, "parameters": 2} }],
		"@typescript-eslint/no-parameter-properties": "error",
		"@typescript-eslint/no-unnecessary-condition": "error",
		"@typescript-eslint/prefer-for-of": "error",
		"@typescript-eslint/restrict-plus-operands": "error"
	}
}