Javascript can'；“t运行”；“新产品管理启动”；

这是我的package.json文件：

{
  "name": "martina",
  "version": "1.0.0",
  "description": "d",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "d"
  },
  "author": "",
  "license": "ISC"
}

我该怎么办？顺便说一下，我有一个苹果

编辑：我按照你们的建议做了，并添加了脚本start，但现在当我运行“npm start”时，我得到了以下信息：

> martina@1.0.0 start /Users/martina
> node index.js

internal/modules/cjs/loader.js:589
    throw err;
    ^

Error: Cannot find module '/Users/martina/index.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:587:15)
    at Function.Module._load (internal/modules/cjs/loader.js:513:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:760:12)
    at startup (internal/bootstrap/node.js:303:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:872:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! martina@1.0.0 start: `node index.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the martina@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/martina/.npm/_logs/2020-06-11T08_05_28_654Z-debug.log

---

您需要在

脚本

下添加

开始

脚本，即：

{
  "name": "martina",
  "version": "1.0.0",
  "description": "d",
  "main": "index.js",
  "scripts": {
    "start": "echo STARTING...",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "d"
  },
  "author": "",
  "license": "ISC"
}

---

请尝试

npm run test

了解

脚本

字段如何为

包工作。json

您需要在

脚本

下添加

启动

脚本，并在本地节点服务器上承载或启动应用程序，添加命令

node index.js

作为

start

脚本的值

{
  "name": "martina",
  "version": "1.0.0",
  "description": "d",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "d"
  },
  "author": "",
  "license": "ISC"
}

PS:运行命令

npm start

时，确保您位于正确的项目目录中。文件

index.js

和

package.json

需要作为此项目目录的直接子项显示

项目结构：

martina
  |- index.js
  |- package.json
  |- file1
  |- file2
  |- ...other files
  ...

在上面的项目结构中，

martina

是主要的项目目录。在

martina

内部，可以找到

index.js

和

package.json

{
  "name": "martina",
  "version": "1.0.0",
  "description": "d",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "d"
  },
  "author": "",
  "license": "ISC"
}

通过查看文件，将显示您的包。您刚刚创建了项目。您的index.js文件的目录似乎不正确。在package.json目录中创建index.js文件，然后运行node index.js或npm start命令

> martina@1.0.0 start /Users/martina
> node index.js

internal/modules/cjs/loader.js:589
    throw err;
    ^

Error: Cannot find module '/Users/martina/index.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:587:15)
    at Function.Module._load (internal/modules/cjs/loader.js:513:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:760:12)
    at startup (internal/bootstrap/node.js:303:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:872:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! martina@1.0.0 start: `node index.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the martina@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/martina/.npm/_logs/2020-06-11T08_05_28_654Z-debug.log

---

试试这个。你的解决方案会完成的。如果仍然出现错误，请让我知道

重复：我相信

开始

需要位于package.json的

脚本部分；现在您只有
test
作为脚本。我将研究如何包含实际的开始脚本。这是否回答了您的问题@Martina，看看我答案的PS。你如何验证文件是否在正确的项目目录中？@Martina，看看PS。再次更新谢谢！我修好了！现在一切都已就绪，我得到一个错误：import React from'React'SyntaxError:Unexpected identifier。这似乎是一个错误。你知道为什么吗？你能接受这个答案并为你的错误提出一个新的问题，这样就很容易调试了。