Javascript 执行时出现以下错误"；“首届世博会”；命令

我想按照本教程（）开始学习react native

我遵循了最初的步骤，在命令行中遇到了一些问题：expo init AwesomeProject

这是日志：

'''

？选择模板：expo模板选项卡
√ 请输入一些初始配置值。
阅读更多：https://docs.expo.io/versions/latest/workflow/configuration/ ·100%完成
正在提取项目文件。。。
正在自定义项目。。。
正在安装依赖项。。。
npm警告弃用的内核-js@1.2.7：core js@install git follow链接：
如果仍然无法工作，请运行cmd
npm缓存清理--force
是否已安装git？如何安装？
? Choose a template: expo-template-tabs
√ Please enter a few initial configuration values.
  Read more: https://docs.expo.io/versions/latest/workflow/configuration/ · 100% completed
Extracting project files...
Customizing project...
Installing dependencies...
npm WARN deprecated core-js@1.2.7: core-js@<2.6.5 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.
npm WARN deprecated kleur@2.0.2: Please upgrade to kleur@3 or migrate to 'ansi-colors' if you prefer the old syntax. Visit <https://github.com/lukeed/kleur/releases/tag/v3.0.0\> for migration path(s).
[  ................] / fetchMetadata: sill pacote range manifest for copy-descriptor@^0.1.0 f[ npm ERR! path git
npm ERR! code ENOENT
npm ERR! errno ENOENT
npm ERR! syscall spawn git
npm ERR! enoent Error while executing:
npm ERR! enoent undefined ls-remote -h -t ssh://git@github.com/expo/react-native-maps.git
npm ERR! enoent
npm ERR! enoent
npm ERR! enoent spawn git ENOENT
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! A complete log of this run can be found in:
npm ERR!    C:\Users\acer\AppData\Roaming\npm-cache\_logs\2019-04-08T15_58_42_285Z-debug.log
Process exited with non-zero code: 1
Set EXPO_DEBUG=true in your env to view the stack trace.
''''