1.npm安裝
npm安裝教程:https://www.cnblogs.com/goldlong/p/8027997.html
補充:
出現警告:npm WARN [email protected] requires a peer of ajv@^6.9.1 but none is installed.you must installed peer dependencies youselfs.
解決方法:安裝ajv@^6.9.1(根據警告內容) ,輸入 npm install ajv@^6.9.1.