.eslintrc

{
	root: true,
	parser: "babel-eslint",
	parserOptions: {
		ecmaVersion: 6,
		sourceType: "module",
		ecmaFeatures: {
			jsx: true
		},
	},
	env: {
		browser: true,
		commonjs: true,
		es6: true,
        webextensions: true,
        node: true,
	},
	extends: "eslint:recommended",
	rules: {
		// modification of default rules
		"comma-dangle": [1, "always-multiline"],
		"no-console": [0],

		// all block must have {..}
		"curly": [2],
		"dot-location": [2, "property"],
		"dot-notation": [2],
		"eqeqeq": [1, "smart"],
		"no-eval": [2],
		"no-extend-native": [2],
		"no-implied-eval": [2],
		"no-multi-spaces": [1],
		"radix": [2],
		"strict": [2, "global"],
		"no-unused-vars": [2, {"args": "none"}],
		"no-useless-escape": [1],

		// style
		"array-bracket-spacing": [2],
		"block-spacing": [2, "never"],
		"brace-style": [2, "1tbs", {"allowSingleLine": true}],
		"camelcase": [2, {"properties": "never"}],
		"comma-spacing": [2, {"before": false, "after": true}],
		"comma-style": [2, "last"],
		"computed-property-spacing": [2, "never"],
		"eol-last": [2],
		"indent": [2, "tab", {"SwitchCase": 1}],
		"key-spacing": [2, {"beforeColon": false, "afterColon": true, "mode": "minimum"}],
		"new-cap": [2],
		"lines-around-comment": [2],
		"no-lonely-if": [2],
		"no-trailing-spaces": [2, {"skipBlankLines": true}],
		"quotes": [2, "single", "avoid-escape"],
		"semi": [2],
		"keyword-spacing": [2, {
			"overrides": {
				"if": {"after": false},
				"else": {"before": false, "after": false},
				"try": {"after": false},
				"catch": {"before": false, "after": false},
				"for": {"after": false},
				"switch": {"after": false},
				"function": {"before": false, "after": false},
			},
		}],
		"space-before-blocks": [2, "never"],
		"space-before-function-paren": [2, "never"],
		"space-in-parens": [2, "never"],
		"space-infix-ops": [2],
		"array-callback-return": [1],
		"no-unmodified-loop-condition": [2],
		"no-whitespace-before-property": [2],

		// es6
		"arrow-spacing": [2],
		"no-class-assign": [2],
		"no-dupe-class-members": [2],
		"no-var": [1],
		"prefer-arrow-callback": [1, {"allowNamedFunctions": true}],
		"prefer-spread": [2],
		"prefer-rest-params": [2],
		"no-confusing-arrow": [2],
		"no-new-symbol": [2],
		"no-useless-constructor": [1],
		"no-duplicate-imports": [1],
	},
}