My ESLint configurations

.eslintrc

{
	"root": true,
	"extends": [ "react-app", "plugin:jsx-a11y/recommended" ],
	"plugins": [ "jsx-a11y" ],
	"parser": "babel-eslint",
	"parserOptions": {
		"ecmaVersion": 8,
		"ecmaFeatures": {
			"experimentalObjectRestSpread": true,
			"impliedStrict": true,
			"classes": true
		}
	},
	"env": {
		"browser": true,
		"node": true,
		"jquery": true,
		"jest": true
	},
	"rules": {
		"no-debugger": 0,
		"no-unused-vars": [
			1,
			{
				"argsIgnorePattern": "res|next|^err"
			}
		],
		"no-unused-expressions": [
			2,
			{
				"allowTaggedTemplates": true
			}
		],
		"no-param-reassign": [
			2,
			{
				"props": false
			}
		],
		"camelcase": 0,
		"no-console": 0,
		"import/prefer-default-export": 0,
		"import": 0,
		"func-names": 0,
		"space-before-function-paren": 0,
		"block-spacing": [ 2, "always" ],
		"space-in-parens": [ 2, "always" ],
		"object-curly-spacing": [ 2, "always" ],
		"template-curly-spacing": [ 2, "always" ],
		"array-bracket-spacing": [ 2, "always" ],
		"comma-dangle": 0,
		"max-len": 0,
		"import/extensions": 0,
		"no-underscore-dangle": 0,
		"consistent-return": 0,
		"react/display-name": 0,
		"react/react-in-jsx-scope": 0,
		"react/prefer-stateless-function": 0,
		"react/forbid-prop-types": 0,
		"react/no-unescaped-entities": 0,
		"react/jsx-curly-spacing": [ 2, "always" ],
		"react/jsx-filename-extension": [
			1,
			{
				"extensions": [ ".js", ".jsx" ]
			}
		],
		"radix": 0,
		"quotes": [
			2,
			"single",
			{
				"avoidEscape": true,
				"allowTemplateLiterals": true
			}
		],
		"jsx-a11y/accessible-emoji": 0,
		"jsx-a11y/href-no-hash": "off",
		"jsx-a11y/anchor-is-valid": [
			"warn",
			{
				"aspects": [ "invalidHref" ]
			}
		]
	}
}

.eslintrc-airbnb

{
	"extends": "airbnb",
	"parser": "babel-eslint",
	"parserOptions": {
		"ecmaVersion": 8,
		"ecmaFeatures": {
			"experimentalObjectRestSpread": true,
			"impliedStrict": true,
			"classes": true
		}
	},
	"env": {
		"browser": true,
		"node": true,
		"jquery": true,
		"jest": true
	},
	"rules": {
		"no-debugger": 0,
		"no-unused-vars": [
			1,
			{
				"argsIgnorePattern": "res|next|^err"
			}
		],
		"arrow-body-style": [
			2,
			"as-needed"
		],
		"no-unused-expressions": [
			2,
			{
				"allowTaggedTemplates": true
			}
		],
		"no-param-reassign": [
			2,
			{
				"props": false
			}
		],
		"camelcase": 0,
		"no-console": 0,
		"import/prefer-default-export": 0,
		"import": 0,
		"func-names": 0,
		"space-before-function-paren": 0,
		"block-spacing": [2, "always"],
		"space-in-parens": [2, "always"],
		"object-curly-spacing": [2, "always"],
		"template-curly-spacing": [2, "always"],
		"array-bracket-spacing": [2, "always"],
		"comma-dangle": 0,
		"max-len": 0,
		"import/extensions": 0,
		"no-underscore-dangle": 0,
		"consistent-return": 0,
		"react/display-name": 0,
		"react/react-in-jsx-scope": 0,
		"react/prefer-stateless-function": 0,
		"react/forbid-prop-types": 0,
		"react/no-unescaped-entities": 0,
		"react/jsx-curly-spacing": [2, "always"],
		"react/jsx-filename-extension": [
			1,
			{
				"extensions": [
					".js",
					".jsx"
				]
			}
		],
		"radix": 0,
		"no-shadow": [
			2,
			{
				"hoist": "all",
				"allow": [
					"resolve",
					"reject",
					"done",
					"next",
					"err",
					"error"
				]
			}
		],
		"quotes": [
			2,
			"single",
			{
				"avoidEscape": true,
				"allowTemplateLiterals": true
			}
		],
		"jsx-a11y/accessible-emoji": 0,
		"jsx-a11y/href-no-hash": "off",
		"jsx-a11y/anchor-is-valid": [
			"warn",
			{
				"aspects": [
					"invalidHref"
				]
			}
		]
	},
}

.eslintrc-base.json

{
	"extends": [
		"eslint:recommended",
		"plugin:import/errors",
		"plugin:react/recommended",
		"plugin:jsx-a11y/recommended",
		"prettier",
		"prettier/react"
	],
	"rules": {
		"react/prop-types": 0,
		"no-console": 1,
		"react-hooks/rules-of-hooks": 2,
		"react-hooks/exhaustive-deps": 1
	},
	"plugins": ["react", "import", "jsx-a11y", "react-hooks"],
	"parserOptions": {
		"ecmaVersion": 2018,
		"sourceType": "module",
		"ecmaFeatures": {
			"jsx": true
		}
	},
	"env": {
		"es6": true,
		"browser": true,
		"node": true
	},
	"settings": {
		"react": {
			"version": "detect"
		}
	}
}

Worth exploring and extending Automattic's wpcalypso configurations as well. There's also the wpcalypso/react for React projects included in that repo - see README. From there, I may only need to make minor adjustments. See the Calypso's .eslintrc file as an example of a project that extends these configs and adds a small handful of overrides.

The .eslintrc-base.jsonfile is a simple and flexible configuration for most React projects.

Referenced from the Frontend Masters course Complete Intro to React, v5 by Brian Holt.

Requires the following installations:

• "babel-eslint"
• "eslint"
• "eslint-config-prettier"
• "eslint-plugin-import"
• "eslint-plugin-jsx-a11y"
• "eslint-plugin-react"
• "eslint-plugin-react-hooks"

Run npm i -D babel-eslint eslint eslint-config-prettier eslint-plugin-import eslint-plugin-jsx-a11y eslint-plugin-react eslint-plugin-react-hooks