const rule = require('./no-react-default-import'); const RuleTester = require('eslint').RuleTester; const ruleTester = new RuleTester({ parser: require.resolve('@typescript-eslint/parser'), }); ruleTester.run('no-react-default-import', rule, { valid: [ { code: 'import * as React from "react";', }, { code: 'import React from "preact";', }, { code: 'import {useState} from "react";', }, { code: 'import type React from "react";', }, { code: 'const React = require("react");', }, ], invalid: [ { code: 'import React from "react";', errors: [{ message: 'Do not use the default React import, use named or namespace import instead.' }], output: 'import * as React from "react";', }, { code: 'import React, {useState} from "react";', errors: [{ message: 'Do not use the default React import, use named or namespace import instead.' }], }, ], });