Brief introduction and use of NPM link

Brief introduction

1. This is very convenient for installing things written by yourself , So you can work on it and iterate tests , Instead of constantly rebuilding .
2. The vernacular above is ： You wrote your own npm modular , Want to test , have access to npm link To global , Then reference tests elsewhere

Use

1. Your encapsulated module （ Project name: ： myModules, Project path ：d:\xxxxxx\xxxxx\x\myModules） You go to the test place （ Project name: test, The project path is ：d:\test）; reminder ： Project name: package.json Medium name;
2. stay myModules Enter under the project cmd Little black frame , Then input npm link;（ Be careful ： There is no need to follow any name here ）

npm link

3. Then go to test Project entry cmd Small black box input npm link myModules;（ Be careful ： Here you need to add the name of the module you are about to connect , That is, in your module package.json Medium name Field ）

npm link myModules

4. When you succeed, you will be prompted （ The connection address points to the prompt ）
5. problem 1： If appear to npm When you search the address or your private server address, it means that the module name you wrote is wrong ！ Please copy and paste your name , Otherwise, the place where you mount is not the root directory of your module （npm link Need to run in your root directory ）
6. test ： If it's just a method , Suggest direct node index.js;（node Run the test ）（ Be careful ： This method gets commonjs standard 【 expose ：module、module.exports, introduce ：require(‘ File address or module name ’)】）
7. After the test , Need to cancel link, Test item input npm unlink myModules Cancel the corresponding module ;myModules Enter npm unlink Cancel the global module mount ;

//  The test item is not mounted 
npm unlink myModules
// myModules Cancel the project mounting 
npm unlink

Sample code

package.js in main The field refers to the address , Please configure to your module address ;（myModules/package.json）

{
    
  "name": "myModules",
  "version": "1.0.0",
  "description": "",
  "main": "src/index.js",
  "scripts": {
    
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}

The main content of the module （myModules/src/index.js）

const myModules = res => res
module.exports = myModules

quote （test/index.js）

const myModules = require('myModules')
const data = require('./data.js')
console.log(myModules(new Uint8Array(data)), 'test')