本来的 tsconfig.app.json 如下

{"extends": "@vue/tsconfig/tsconfig.dom.json","include": ["env.d.ts", "src/**/*", "src/**/*.js", "src/**/*.ts", "src/**/*.vue"],"exclude": ["src/**/__tests__/*"],"compilerOptions": {"composite": true,"tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo","baseUrl": ".","paths": {"@/*": ["./src/*"]},"noEmit": false}
}

本来的 tsconfig.json 如下

{"files": [],"references": [{"path": "./tsconfig.node.json"},{"path": "./tsconfig.app.json"}],"include": ["types/**/*.d.ts","src/**/*.ts","src/**/*.tsx","src/**/*.vue",],"exclude": ["node_modules", "dist"],
}

---

原本以为在tsconfig.app.json 中有

"paths": {"@/*": ["./src/*"]},

再加上 tsconfig.json 中有 references 它就可以了，没想到还是要在 tsconfig.json 中复制多这一段才行，也不知道什么原因

简单说就是，在 tsconfig.json 中加入这一段

"compilerOptions": {"paths": {"@/*": ["./src/*"]}
}