My custom ESLint config

.eslintrc.cjs

/**
 * Dependencies:
 * ```sh
 * npm i -D eslint @typescript-eslint/eslint-plugin @typescript-eslint/parser eslint-plugin-deprecation eslint-plugin-import eslint-plugin-only-warn
 * ```
 * @type {import("eslint").ESLint.ConfigData}
 */
module.exports = {
	/* eslint-disable quote-props */
	env: {
		browser: true,
		es6: true,
	},
	extends: [
		"eslint:recommended",
		"plugin:@typescript-eslint/recommended",
		"plugin:@typescript-eslint/recommended-requiring-type-checking",
		"plugin:@typescript-eslint/strict",
	],
	rules: {
		"@typescript-eslint/consistent-type-definitions": "off",
		"@typescript-eslint/explicit-member-accessibility": ["warn", { "accessibility": "explicit" }],
		"@typescript-eslint/indent": ["warn", "tab"],
		"indent": "off",
		"@typescript-eslint/member-delimiter-style": ["off", "semi"],
		"@typescript-eslint/member-ordering": "warn",
		"@typescript-eslint/naming-convention": ["warn", { "selector": "enumMember", "format": null, "custom": { "regex": "[A-Z][A-Z0-9_]*[a-z0-9_]*", "match": true } }],
		"@typescript-eslint/no-dynamic-delete": "off",
		"@typescript-eslint/no-empty-function": ["warn", { "allow": ["constructors", "overrideMethods"] }],
		"no-empty-function": "off",
		"@typescript-eslint/no-empty-interface": "warn",
		"@typescript-eslint/no-extra-parens": "warn",
		"no-extra-parens": "off",
		"@typescript-eslint/no-extraneous-class": "off",
		"@typescript-eslint/no-floating-promises": "warn",
		"@typescript-eslint/no-inferrable-types": "warn",
		"@typescript-eslint/no-magic-numbers": ["warn", { "ignoreReadonlyClassProperties": true }],
		"no-magic-numbers": "off",
		"@typescript-eslint/no-misused-new": "warn",
		"@typescript-eslint/no-misused-promises": "warn",
		"@typescript-eslint/no-non-null-assertion": "off",
		"@typescript-eslint/no-shadow": "warn",
		"no-shadow": "off",
		"@typescript-eslint/no-this-alias": "off",
		"@typescript-eslint/no-unused-expressions": "warn",
		"no-unused-expressions": "off",
		"@typescript-eslint/no-unused-vars": ["warn", { "varsIgnorePattern": "^_", "argsIgnorePattern": "^_", "caughtErrorsIgnorePattern": "^_" }],
		"no-unused-vars": "off",
		"@typescript-eslint/no-use-before-define": "warn",
		"no-use-before-define": "off",
		"@typescript-eslint/prefer-function-type": "warn",
		"@typescript-eslint/quotes": ["warn", "double", { "allowTemplateLiterals": true }],
		"quotes": "off",
		"@typescript-eslint/semi": ["warn", "always"],
		"semi": "off",
		"@typescript-eslint/type-annotation-spacing": "warn",
		"@typescript-eslint/unified-signatures": "warn",
		"array-callback-return": ["warn", { "checkForEach": false }],
		"arrow-body-style": ["warn", "as-needed"],
		"arrow-parens": ["warn", "as-needed"],
		"brace-style": ["warn", "1tbs"],
		"comma-dangle": ["warn", "always-multiline"],
		"constructor-super": "warn",
		"curly": ["warn", "multi"],
		"deprecation/deprecation": "warn",
		"dot-notation": "warn",
		"eol-last": ["warn", "always"],
		"eqeqeq": ["warn", "always", { "null": "ignore" }],
		"guard-for-in": "warn",
		"jsdoc/newline-after-description": "off",
		"max-len": "off",
		"no-bitwise": "warn",
		"no-caller": "warn",
		"no-console": "warn",
		"no-debugger": "warn",
		"no-empty": "warn",
		"no-eval": "warn",
		"no-fallthrough": "warn",
		"no-new-wrappers": "warn",
		"no-return-await": "warn",
		"no-throw-literal": "warn",
		"no-trailing-spaces": "warn",
		"no-underscore-dangle": ["warn", { "allowInArrayDestructuring": true, "allowInObjectDestructuring": true, "allowFunctionParams": true }],
		"no-unused-labels": "warn",
		"no-useless-return": "warn",
		"no-var": "warn",
		"prefer-arrow/prefer-arrow-functions": "off",
		"prefer-const": "warn",
		"quote-props": ["warn", "as-needed", { "keywords": false, "numbers": true }],
		"radix": "warn",
		"spaced-comment": ["warn", "always"],
		"no-restricted-syntax": ["warn", {
			"selector": "MethodDefinition[static = true] ThisExpression",
			"message": "Don't use 'this' on static methods and properties.",
		}],
	},
	overrides: [
		{
			files: ["src/**/*.ts"],
		}
	],
	parser: "@typescript-eslint/parser",
	parserOptions: {
		createDefaultProgram: true,
		project: [
			"tsconfig.json",
		],
	},
	plugins: [
		"@typescript-eslint",
		"deprecation",
		"eslint-plugin-import",
		"only-warn",
	],
	root: true,
};

angular.eslintrc.js

/**
 * @type {import("eslint").ESLint.ConfigData}
 */
module.exports = { /* eslint-disable quote-props */
	env: {
		browser: true,
		es6: true,
	},
	extends: [
		"eslint:recommended",
		"plugin:@typescript-eslint/recommended",
		"plugin:@typescript-eslint/recommended-requiring-type-checking",
		"plugin:@typescript-eslint/strict",
		"plugin:@angular-eslint/ng-cli-compat",
		"plugin:@angular-eslint/ng-cli-compat--formatting-add-on",
	],
	rules: {
		"@angular-eslint/component-class-suffix": "warn",
		"@angular-eslint/directive-class-suffix": "warn",
		"@angular-eslint/no-host-metadata-property": "warn",
		"@angular-eslint/no-input-rename": "off",
		"@angular-eslint/no-inputs-metadata-property": "warn",
		"@angular-eslint/no-output-on-prefix": "warn",
		"@angular-eslint/no-output-rename": "warn",
		"@angular-eslint/no-outputs-metadata-property": "warn",
		"@angular-eslint/use-lifecycle-interface": "warn",
		"@angular-eslint/use-pipe-transform-interface": "warn",
		"@typescript-eslint/consistent-type-definitions": "off",
		"@typescript-eslint/explicit-member-accessibility": ["warn", { "accessibility": "explicit" }],
		"@typescript-eslint/indent": ["warn", "tab"],
		"indent": "off",
		"@typescript-eslint/member-delimiter-style": ["off", "semi"],
		"@typescript-eslint/naming-convention": ["warn", { "selector": "enumMember", "format": null, "custom": { "regex": "[A-Z][A-Z0-9_]*[a-z0-9_]*", "match": true } }],
		"@typescript-eslint/no-dynamic-delete": "off",
		"@typescript-eslint/no-empty-function": ["warn", { "allow": ["constructors", "overrideMethods"] }],
		"no-empty-function": "off",
		"@typescript-eslint/no-empty-interface": "warn",
		"@typescript-eslint/no-extra-parens": "warn",
		"no-extra-parens": "off",
		"@typescript-eslint/no-extraneous-class": "off",
		"@typescript-eslint/no-floating-promises": "warn",
		"@typescript-eslint/no-inferrable-types": "warn",
		"@typescript-eslint/no-magic-numbers": ["warn", { "ignoreReadonlyClassProperties": true }],
		"no-magic-numbers": "off",
		"@typescript-eslint/no-misused-new": "warn",
		"@typescript-eslint/no-misused-promises": "warn",
		"@typescript-eslint/no-non-null-assertion": "off",
		"@typescript-eslint/no-shadow": "warn",
		"no-shadow": "off",
		"@typescript-eslint/no-unused-expressions": "warn",
		"no-unused-expressions": "off",
		"@typescript-eslint/no-unused-vars": ["warn", { "varsIgnorePattern": "^_", "argsIgnorePattern": "^_", "caughtErrorsIgnorePattern": "^_" }],
		"no-unused-vars": "off",
		"@typescript-eslint/no-use-before-define": "warn",
		"no-use-before-define": "off",
		"@typescript-eslint/prefer-function-type": "warn",
		"@typescript-eslint/quotes": ["warn", "double", { "allowTemplateLiterals": true }],
		"quotes": "off",
		"@typescript-eslint/semi": ["warn", "always"],
		"semi": "off",
		"@typescript-eslint/type-annotation-spacing": "warn",
		"@typescript-eslint/unified-signatures": "warn",
		"array-callback-return": ["warn", { "checkForEach": false }],
		"arrow-body-style": ["warn", "as-needed"],
		"arrow-parens": ["warn", "as-needed"],
		"brace-style": ["warn", "1tbs"],
		"comma-dangle": ["warn", "always-multiline"],
		"constructor-super": "warn",
		"curly": ["warn", "multi"],
		"deprecation/deprecation": "warn",
		"dot-notation": "warn",
		"eol-last": ["warn", "always"],
		"eqeqeq": ["warn", "always"],
		"guard-for-in": "warn",
		"jsdoc/newline-after-description": "off",
		"max-len": "off",
		"no-bitwise": "warn",
		"no-caller": "warn",
		"no-console": "warn",
		"no-debugger": "warn",
		"no-empty": "warn",
		"no-eval": "warn",
		"no-fallthrough": "warn",
		"no-new-wrappers": "warn",
		"no-return-await": "warn",
		"no-throw-literal": "warn",
		"no-trailing-spaces": "warn",
		"no-underscore-dangle": ["warn", { "allowInArrayDestructuring": true, "allowInObjectDestructuring": true, "allowFunctionParams": true }],
		"no-unused-labels": "warn",
		"no-useless-return": "warn",
		"no-var": "warn",
		"prefer-arrow/prefer-arrow-functions": "off",
		"prefer-const": "warn",
		"quote-props": ["warn", "as-needed", { "keywords": false, "numbers": true }],
		"radix": "warn",
		"spaced-comment": ["warn", "always"],
		"no-restricted-syntax": ["warn", {
			"selector": "MethodDefinition[static = true] ThisExpression",
			"message": "Don't use 'this' on static methods and properties.",
		}],
	},
	parser: "@typescript-eslint/parser",
	parserOptions: {
		createDefaultProgram: true,
		project: [
			"tsconfig.json",
		],
	},
	plugins: [
		"@angular-eslint/eslint-plugin",
		"@typescript-eslint",
		"deprecation",
		"eslint-plugin-import",
		"only-warn",
	],
	overrides: [
		{
			files: [
				"./src/**/*.ts",
				"./e2e/**/*.ts",
			],
		},
		{
			files: [
				"./src/**/*.html",
			],
			extends: [
				// "plugin:@angular-eslint/template/recommended",
			],
		},
	],
	root: true,
};