• yarn init
  • 为 yarn init 设置默认值
  • yarn init —yes/-y
  • yarn init —private/-p

    交互式创建或更新 package.json 文件。

    yarn init

    这个命令通过交互式会话带你创建一个 package.json 文件。 一些默认值比如 license 和初始版本可以在 yarn 的 init-* 配置里找到。

    这是一个在名为 testdir 的目录里运行命令的例子：

    1. $ yarn init
    1. question name (testdir): my-awesome-package
    2. question version (1.0.0):
    3. question description: The best package you will ever find.
    4. question entry point (index.js):
    5. question git repository: https://github.com/yarnpkg/example-yarn-package
    6. question author: Yarn Contributor
    7. question license (MIT):
    8. question private:
    9. success Saved package.json
    10. ✨  Done in 87.70s.

    这导致下面的 package.json：

    1. {
    2.   "name": "my-awesome-package",
    3.   "version": "1.0.0",
    4.   "description": "The best package you will ever find.",
    5.   "main": "index.js",
    6.   "repository": {
    7.     "url": "https://github.com/yarnpkg/example-yarn-package",
    8.     "type": "git"
    9.   },
    10.   "author": "Yarn Contributor",
    11.   "license": "MIT"
    12. }
    By default, if answer given to question private is passed in as empty, the private key will not be added to package.json

    如果你已经有一个现成的 package.json，它会用这个文件的条目作为默认值。

    现有下面的 package.json：

    1. {
    2.   "name": "my-existing-package",
    3.   "version": "0.1",
    4.   "description": "I exist therefore I am.",
    5.   "repository": {
    6.     "url": "https://github.com/yarnpkg/example-yarn-package",
    7.     "type": "git"
    8.   },
    9.   "license": "BSD-2-Clause"
    10. }

    下面交互式会话期间默认值的结果：

    1. $ yarn init
    1. question name (my-existing-package):
    2. question version (0.1):
    3. question description (I exist therefore I am.):
    4. question entry point (index.js):
    5. question git repository (https://github.com/yarnpkg/example-yarn-package):
    6. question author: Yarn Contributor
    7. question license (BSD-2-Clause):
    8. question private:
    9. success Saved package.json
    10. ✨  Done in 121.53s.
    为 yarn init 设置默认值

    下面的 config 变量可被用于自定义 yarn init 的默认值：

    • init-author-name
    • init-author-email
    • init-author-url
    • init-version
    • init-license
    yarn init —yes/-y

    这个命令跳过上面提到的交互式会话，并生成一个基于你的默认值的 package.json。 一些默认值可以被上面提到的 init-* 配置改变。 例如，给定一个全新安装的 Yarn 并在一个 yarn-example 目录里：

    1. $ yarn init --yes
    1. warning The yes flag has been set. This will automatically answer yes to all questions which may have security implications.
    2. success Saved package.json
    3. ✨  Done in 0.09s.

    这会生成下面的 package.json：

    1. {
    2.   "name": "yarn-example",
    3.   "version": "1.0.0",
    4.   "main": "index.js",
    5.   "license": "MIT"
    6. }
    yarn init —private/-p
    自动添加 private: true 到 package.json
    1. $ yarn init --private

    If the private flag is set, the private key will be automatically set to true and you still complete the rest of the init process.

    1. question name (testdir): my-awesome-package
    2. question version (1.0.0):
    3. question description: The best package you will ever find.
    4. question entry point (index.js):
    5. question git repository: https://github.com/yarnpkg/example-yarn-package
    6. question author: Yarn Contributor
    7. question license (MIT):
    8. success Saved package.json
    9. ✨  Done in 87.70s.
    1. {
    2.   "name": "my-awesome-package",
    3.   "version": "1.0.0",
    4.   "description": "The best package you will ever find.",
    5.   "main": "index.js",
    6.   "repository": {
    7.     "url": "https://github.com/yarnpkg/example-yarn-package",
    8.     "type": "git"
    9.   },
    10.   "author": "Yarn Contributor",
    11.   "license": "MIT",
    12.   "private": true
    13. }

    可以同时使用 yes 和 private 标志。

    像是：

    1. $ yarn init -yp
    1. warning The yes flag has been set. This will automatically answer yes to all questions which may have security implications.
    2. success Saved package.json
    3. ✨  Done in 0.05s.

    这会生成下面的 package.json：

    1. {
    2.   "name": "yarn-example",
    3.   "version": "1.0.0",
    4.   "main": "index.js",
    5.   "license": "MIT",
    6.   "private": true
    7. }

    原文: https://yarnpkg.com/zh-Hans/docs/cli/init