The simplest npm package delivery steps

1. Create a new empty folder locally
2. In the folder, npm initinitialize the project information to generate package.json
3. Create a new index.js, the file name and path are actually implemented in package.json:"main": "index.js",
4. index.js write content, such as

alert('这是一个npm测试包，功能就是弹出这句话')

5. Make sure the source of npm points to the official

yarn config get registry
yarn config set registry https://registry.npmjs.org

6. After registering on the npm official website, log in to the project, enter the password, and possibly the verification code received by email

npm login // 登录
npm whoami // 看看当前账户名称

7. release. If the package name starts with @, it is private by default, and it can be published normally only after adding –access public for the first time, and there is no need to add it later.

npm publish --access public // 首次发布
npm publish // 发布
npm unpublish --force // 强制撤回最后一次发版，可通过修改版本号撤回对应发版，但已发过的版本号不能重复发

8. To update the version number, the following command will be incremented every time it is executed

npm version patch // 补丁版本，最后一位加1
npm version minor // 新增功能，中间一位加1
npm version major // 大改动，不向下兼容，第一位加1

9. Prefix for the mpm version number

• ~: Allows to install the last version number to the latest;
• ^: Allow the installation of the version number in the middle of z to the latest.

10. More error information: Some pitfalls encountered when publishing npm packages
11. Install the project name of the release package in the test project, and then import it to use