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modules's Introduction

关于必须删除node_modules包在npm i才可以 正常运行的一种论证

三个文件夹介绍

  1. main项目为平时开发的主项目，其中会依赖module1和module2
require('@zwhkk/module1')

  1. module2
    [email protected]中 global.module2 = 'variable module2, v2.0.0' [email protected]中 global.module2 = () => 'function module2, v2.0.1'

  2. module1

require('@zwhkk/module2')

console.log('module1中打印global.module2: ', global.module2)
console.log('module1中打印global.module2(): ', global.module2())

复现步骤

# 查看node_modules中依赖包关系
npm ls

# 进入main项目,
cd main

# 几个月安装了[email protected]
npm i @zwhkk/[email protected] -S

# 现在module2已经升级为2.0.1, 且module1依赖形式为 "@zwhkk/module2": "^2.0.0"
npm i @zwhkk/module1 -S

# 安装结果为下面，
# @zwhkk/[email protected]
# @zwhkk/[email protected]

# 执行文件, 此时global.module2是变量不是函数，所以报错
node index.js

# 删除node_modules和package-lock.json，然后npm i，此时global.module2是函数，正常运行
npm i
# @zwhkk/[email protected]
# @zwhkk/[email protected]

# 执行文件, 此时global.module2是函数，正常运行
node index.js

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