Mock 之 msw 的使用（Browser）

安装

npm install msw --save-dev
# or
yarn add msw --dev

创建mock文件

// src/mocks/browser.js
import { setupWorker } from 'msw'
import { handlers } from './handlers'

// This configures a Service Worker with the given request handlers.
export const worker = setupWorker(...handlers)

// src/mocks/handlers.js
import { rest } from 'msw'

export const handlers = [
  rest.post('/login', (req, res, ctx) => {
    // Persist user's authentication in the session
    sessionStorage.setItem('is-authenticated', 'true')

    return res(
      // Respond with a 200 status code
      ctx.status(200),
    )
  }),

  rest.get('/user', (req, res, ctx) => {
    // Check if the user is authenticated in this session
    const isAuthenticated = sessionStorage.getItem('is-authenticated')

    if (!isAuthenticated) {
      // If not authenticated, respond with a 403 error
      return res(
        ctx.status(403),
        ctx.json({
          errorMessage: 'Not authorized',
        }),
      )
    }

    // If authenticated, return a mocked user details
    return res(
      ctx.status(200),
      ctx.json({
        username: 'admin',
      }),
    )
  }),
]

初始化

npx msw init public/ --save
// 成功后会在public中生成 mockServiceWorker.js 文件

node中使用参考文档

Mock Service Worker