.eslintrc.json

{
	"env": {
		"es6": true,
		"node": true
	},
	"extends": [
		"eslint:recommended",
		"plugin:@typescript-eslint/recommended",
		"plugin:@typescript-eslint/recommended-requiring-type-checking",
		"plugin:import/errors",
		"plugin:import/warnings",
		"plugin:import/typescript",
		"prettier"
	],
	"parser": "@typescript-eslint/parser",
	"parserOptions": {
		"ecmaVersion": 2019,
		"sourceType": "module",
		"ecmaFeatures": {
			"impliedStrict": true
		},
		"project": "tsconfig.json"
	},
	"plugins": ["import", "@typescript-eslint"],
	"reportUnusedDisableDirectives": true,
	"root": true,
	"rules": {
		"arrow-parens": ["off"],
		"brace-style": ["off", "stroustrup"],
		"consistent-return": "error",
		"curly": ["error", "multi-line", "consistent"],
		"eol-last": "error",
		"linebreak-style": ["error", "unix"],
		"new-parens": "error",
		"no-console": "off",
		"no-constant-condition": ["warn", { "checkLoops": false }],
		"no-caller": "error",
		"no-debugger": "warn",
		"no-dupe-class-members": "off",
		"no-duplicate-imports": "error",
		"no-else-return": "warn",
		"no-empty": ["warn", { "allowEmptyCatch": true }],
		"no-eval": "error",
		"no-ex-assign": "warn",
		"no-extend-native": "error",
		"no-extra-bind": "error",
		"no-floating-decimal": "error",
		"no-implicit-coercion": "error",
		"no-implied-eval": "error",
		// Turn off until fix for: https://github.com/typescript-eslint/typescript-eslint/issues/239
		"no-inner-declarations": "off",
		"no-lone-blocks": "error",
		"no-lonely-if": "error",
		"no-loop-func": "error",
		"no-multi-spaces": "error",
		"no-return-assign": "error",
		"no-return-await": "warn",
		"no-self-compare": "error",
		"no-sequences": "error",
		"no-template-curly-in-string": "warn",
		"no-throw-literal": "error",
		"no-unmodified-loop-condition": "warn",
		"no-unneeded-ternary": "error",
		"no-use-before-define": "off",
		"no-useless-call": "error",
		"no-useless-catch": "error",
		"no-useless-computed-key": "error",
		"no-useless-concat": "error",
		"no-useless-rename": "error",
		"no-useless-return": "error",
		"no-var": "error",
		"no-with": "error",
		"object-shorthand": ["error", "never"],
		"one-var": ["error", "never"],
		"prefer-arrow-callback": "error",
		"prefer-const": "error",
		"prefer-numeric-literals": "error",
		"prefer-object-spread": "error",
		"prefer-rest-params": "error",
		"prefer-spread": "error",
		"prefer-template": "error",
		"quotes": ["error", "single", { "avoidEscape": true }],
		// Turn off until fix for: https://github.com/eslint/eslint/issues/11899
		"require-atomic-updates": "off",
		"semi": ["error", "always"],
		"semi-style": ["error", "last"],
		"sort-imports": [
			"error",
			{
				"ignoreCase": true,
				"ignoreDeclarationSort": true,
				"ignoreMemberSort": false,
				"memberSyntaxSortOrder": ["none", "all", "multiple", "single"]
			}
		],
		"yoda": "error",
		"import/export": "off",
		"import/extensions": ["error", "never"],
		"import/named": "off",
		"import/namespace": "off",
		"import/newline-after-import": "warn",
		"import/no-cycle": "off",
		"import/no-dynamic-require": "error",
		"import/no-default-export": "error",
		"import/no-duplicates": "error",
		"import/no-self-import": "error",
		"import/no-unresolved": ["warn", { "ignore": ["vscode"] }],
		"import/order": [
			"warn",
			{
				"groups": ["builtin", "external", "internal", ["index", "sibling", "parent"]],
				"newlines-between": "never"
			}
		],
		"@typescript-eslint/ban-types": [
			"error",
			{
				"extendDefaults": false,
				"types": {
					"String": {
						"message": "Use string instead",
						"fixWith": "string"
					},
					"Boolean": {
						"message": "Use boolean instead",
						"fixWith": "boolean"
					},
					"Number": {
						"message": "Use number instead",
						"fixWith": "number"
					},
					"Symbol": {
						"message": "Use symbol instead",
						"fixWith": "symbol"
					},
					// "Function": {
					// 	"message": "The `Function` type accepts any function-like value.\nIt provides no type safety when calling the function, which can be a common source of bugs.\nIt also accepts things like class declarations, which will throw at runtime as they will not be called with `new`.\nIf you are expecting the function to accept certain arguments, you should explicitly define the function shape."
					// },
					"Object": {
						"message": "The `Object` type actually means \"any non-nullish value\", so it is marginally better than `unknown`.\n- If you want a type meaning \"any object\", you probably want `Record<string, unknown>` instead.\n- If you want a type meaning \"any value\", you probably want `unknown` instead."
					},
					"{}": {
						"message": "`{}` actually means \"any non-nullish value\".\n- If you want a type meaning \"any object\", you probably want `object` or `Record<string, unknown>` instead.\n- If you want a type meaning \"any value\", you probably want `unknown` instead.",
						"fixWith": "object"
					}
					// "object": {
					// 	"message": "The `object` type is currently hard to use ([see this issue](https://github.com/microsoft/TypeScript/issues/21732)).\nConsider using `Record<string, unknown>` instead, as it allows you to more easily inspect and use the keys."
					// }
				}
			}
		],
		"@typescript-eslint/consistent-type-assertions": [
			"error",
			{
				"assertionStyle": "as",
				"objectLiteralTypeAssertions": "allow-as-parameter"
			}
		],
		"@typescript-eslint/explicit-function-return-type": "off",
		"@typescript-eslint/explicit-member-accessibility": "off",
		"@typescript-eslint/explicit-module-boundary-types": "off", // TODO@eamodio revisit
		"@typescript-eslint/naming-convention": [
			"error",
			{
				"selector": "variable",
				"format": ["camelCase", "PascalCase"],
				"leadingUnderscore": "allow",
				"filter": {
					"regex": "^_$",
					"match": false
				}
			},
			{
				"selector": "variableLike",
				"format": ["camelCase"],
				"leadingUnderscore": "allow",
				"filter": {
					"regex": "^_$",
					"match": false
				}
			},
			{
				"selector": "memberLike",
				"modifiers": ["private"],
				"format": ["camelCase"],
				"leadingUnderscore": "allow"
			},
			{
				"selector": "memberLike",
				"modifiers": ["private", "readonly"],
				"format": ["camelCase", "PascalCase"],
				"leadingUnderscore": "allow"
			},
			{
				"selector": "memberLike",
				"modifiers": ["static", "readonly"],
				"format": ["camelCase", "PascalCase"]
			},
			{
				"selector": "interface",
				"format": ["PascalCase"],
				"custom": {
					"regex": "^I[A-Z]",
					"match": false
				}
			}
		],
		"@typescript-eslint/no-empty-function": ["warn", { "allow": ["constructors"] }],
		"@typescript-eslint/no-empty-interface": "error",
		"@typescript-eslint/no-explicit-any": "off",
		"@typescript-eslint/no-floating-promises": "error",
		"@typescript-eslint/no-inferrable-types": ["warn", { "ignoreParameters": true, "ignoreProperties": true }],
		"@typescript-eslint/no-misused-promises": ["error", { "checksVoidReturn": false }],
		"@typescript-eslint/no-namespace": "off",
		"@typescript-eslint/no-non-null-assertion": "off",
		"@typescript-eslint/no-parameter-properties": "off",
		"@typescript-eslint/no-unnecessary-condition": "off",
		"@typescript-eslint/no-unsafe-assignment": "off", // TODO@eamodio revisit
		"@typescript-eslint/no-unsafe-call": "off", // TODO@eamodio revisit
		"@typescript-eslint/no-unsafe-member-access": "off", // TODO@eamodio revisit
		"@typescript-eslint/no-unsafe-return": "off", // TODO@eamodio revisit
		"@typescript-eslint/no-unused-expressions": ["warn", { "allowShortCircuit": true }],
		"@typescript-eslint/no-unused-vars": [
			"warn",
			{
				"args": "after-used",
				"argsIgnorePattern": "^_",
				"ignoreRestSiblings": true,
				"varsIgnorePattern": "^_$"
			}
		],
		"@typescript-eslint/no-use-before-define": "off",
		"@typescript-eslint/prefer-nullish-coalescing": "off",
		"@typescript-eslint/prefer-optional-chain": "warn",
		"@typescript-eslint/restrict-template-expressions": [
			"error",
			{ "allowAny": true, "allowBoolean": true, "allowNumber": true, "allowNullish": true }
		],
		"@typescript-eslint/strict-boolean-expressions": [
			"warn",
			{
				"allowString": true,
				"allowNumber": true,
				"allowNullableObject": false,
				"allowNullableBoolean": true,
				"allowNullableNumber": true,
				"allowNullableString": true,
				"allowAny": false
			}
		],
		"@typescript-eslint/unbound-method": "off" // Too many bugs right now: https://github.com/typescript-eslint/typescript-eslint/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+unbound-method
	}
}