.eslintrc.js

module.exports = {
	root: true, // Don't look outside this project for inherited configs
	parser: '@typescript-eslint/parser', // Specifies the ESLint parser
	parserOptions: {
		ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
		sourceType: 'module', // Allows for the use of imports
		project: './tsconfig.json',
	},
	extends: [
		'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
	],
	plugins: [],
	rules: {
		'indent': 'off',
		'@typescript-eslint/indent': [
			'error',
			'tab',
			{
				'SwitchCase': 1
			}
		],
		'quotes': [
			'error',
			'single',
			{
				'avoidEscape': true,
				'allowTemplateLiterals': true
			}
		],
		'@typescript-eslint/no-parameter-properties': 'off',
		'@typescript-eslint/no-explicit-any': 'off',
		'@typescript-eslint/no-use-before-define': [
			'error',
			{
				functions: false,
				typedefs: false,
				classes: false,
			},
		],
		'@typescript-eslint/no-unused-vars': [
			'error',
			{
				ignoreRestSiblings: true,
				argsIgnorePattern: '^_',
			},
		],
		'@typescript-eslint/explicit-function-return-type': [
			'warn',
			{
				allowExpressions: true,
				allowTypedFunctionExpressions: true,
			},
		],
		'@typescript-eslint/no-object-literal-type-assertion': 'off',
		'@typescript-eslint/interface-name-prefix': 'off',
		'@typescript-eslint/no-non-null-assertion': 'off', // This is necessary for Map.has()/get()!
		'no-var': 'error',
		'prefer-const': 'error',
		'no-trailing-spaces': 'error',
	},
	overrides: [
		{
			files: ['*.test.ts'],
			rules: {
				'@typescript-eslint/explicit-function-return-type': 'off',
			},
		},
	],
};