'react' - 運行 npm start 后，它給出 ./src/contentful.js 找不到模塊：無法解析 'C:\\Users\\..\\my-blog\\src' 中的 'contenful'

Question

我運行了 npm install，得到了節點模塊和包，但是當我運行 npm start 時出現這個錯誤：

./src/contentful.js
找不到模塊：無法解析“C:\\Users\\Dannis\\my-blog\\src”中的“contenful”

我試圖刪除package-json.lock ，然后運行npm install和npm start並且仍然得到相同的塊。 （也試過npm update ， npm install和npm start ，仍然是同樣的錯誤）。

這是我的 package.json 的樣子：

{
  "name": "my-blog",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.4.0",
    "@testing-library/user-event": "^7.2.1",
    "contentful": "^7.13.1",
    "react": "^16.12.0",
    "react-dom": "^16.12.0",
    "react-scripts": "3.4.0",
    "touch": "^3.1.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

我嘗試安裝 react-router-dom、react-markdown 和 history，但出現此錯誤：

無法讀取未定義的屬性“匹配”。

有任何想法嗎？

Answer 1

@user8555937 我運行 npm 版本得到了這個：

{ 
'my-blog': '0.1.0', 
npm: '6.13.7', 
ares: '1.15.0', 
brotli: '1.0.7', 
cldr: '35.1', 
http_parser: '2.9.3', 
icu: '64.2', 
llhttp: '2.0.4', 
modules: '72', 
napi: '5', 
nghttp2: '1.40.0', 
node: '12.16.0', 
openssl: '1.1.1d',
tz: '2019c', 
unicode: '12.1', 
uv: '1.34.0', 
v8: '7.8.279.23-node.31', 
zlib: '1.2.11' 
}

./src/contentful.js 的@PedroMutter 代碼：

const client = require('contentful').createClient({
  space: 'urer2vtwz5u1',
  accessToken: 'H31gCjOrReWAIbKiBWwBCtYF0_iw5kSVjZxh1FyHzNk'
})

const getBlogPosts = () => client.getEntries().then(response => response.items)

const getSinglePost = slug =>
  client
    .getEntries({
      'fields.slug': slug,
      content_type: 'blogPost'
    })
    .then(response => response.items)

export { getBlogPosts, getSinglePost }

更新：剛剛運行了一個 npm 更新，現在我得到：

./src/contentful.js Line 1:16: 'contentful' 沒有定義 no-undef

Answer 2

當您在瀏覽器中運行它時，嘗試使用 es6 import contentful庫，您將它與Commonjs混合：

import * as contentful from 'contentful';


const client = contentful.createClient({
  space: 'urer2vtwz5u1',
  accessToken: 'H31gCjOrReWAIbKiBWwBCtYF0_iw5kSVjZxh1FyHzNk'
})

const getBlogPosts = () => client.getEntries().then(response => response.items)

const getSinglePost = slug =>
  client
    .getEntries({
      'fields.slug': slug,
      content_type: 'blogPost'
    })
    .then(response => response.items)

export { getBlogPosts, getSinglePost }