.eslintrc.json

{
	"env": {
		"es6": true,
		"node": true,
		"browser": true,
		"jest/globals": true
	},
	"extends": "eslint:recommended",
	"parserOptions": {
		"sourceType": "module",
		"ecmaVersion": 2019
	},
	"plugins": [
		"jsdoc",
		"jest"
	],
	"globals": {
	  "fetch": false
	},
	"settings": {
		"jsdoc": {
			"tagNamePreference": {
				"returns": "return"
			}
		}
	},
	"rules": {
		"no-multi-spaces": ["error", { "ignoreEOLComments": true, "exceptions": { "VariableDeclarator": true } }],
		"block-spacing": ["error", "never"],
		"array-bracket-spacing": ["error", "never"],
		"space-in-parens": ["error", "never"],
		"comma-spacing": ["error", { "before": false, "after": true }],
		"key-spacing": ["error", { "afterColon": true, "beforeColon": false }],
		"indent": ["error", "tab", { "SwitchCase": 1 }],
		"quotes": ["error","double", { "avoidEscape": true, "allowTemplateLiterals": true}],
		"semi": ["error", "always"],
		"no-console": ["warn"],
		"no-constant-condition": ["warn"],
		"curly": ["error", "all"],
		"brace-style": ["error", "1tbs", { "allowSingleLine": false }],
		"keyword-spacing": ["error", { "before": true, "after": true }],
		"object-curly-spacing": ["error", "never"],
		"no-mixed-spaces-and-tabs": ["error", "smart-tabs"],
		"spaced-comment": [2, "always"],
		"space-before-blocks": ["error", "always"],
		"space-before-function-paren": ["error", "never"],
		"prefer-template": "error",
		"no-useless-concat": "error",
		"linebreak-style": ["error", "unix"],
		"template-curly-spacing": ["error", "never"],
		"no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 0 }],
	    "jest/no-disabled-tests": "warn",
	    "jest/no-focused-tests": "error",
	    "jest/no-identical-title": "error",
	    "jest/prefer-to-have-length": "warn",
	    "jest/valid-expect": "error",
		"jsdoc/require-param": 1,
		"jsdoc/require-param-description": 1,
		"jsdoc/require-param-name": 1,
		"jsdoc/require-param-type": 1,
		"jsdoc/require-returns": 1,
		"jsdoc/require-returns-description": 1,
		"jsdoc/require-returns-type": 1,
		"jsdoc/require-returns-check": 1,
		"jsdoc/require-hyphen-before-param-description": 1
	}
}