尝试导入错误：“必需”未从“是”导出

Question

大家好，我已经在我的新项目中安装了 yup，但导入它后出现以下错误。未导出所需的。我尝试更改导入的位置，例如将其放在顶部，但仍然没有任何反应，请帮助我必须在我的反应应用程序上添加验证。谢谢

我在我的应用程序中使用以下库

"dependencies": {
"@testing-library/jest-dom": "^5.15.0",
"@testing-library/react": "^11.2.7",
"@testing-library/user-event": "^12.8.3",
"axios": "^0.24.0",
"bootstrap": "^4.6.0",
"datatables.net-bs4": "^1.11.3",
"date-fns": "^2.26.0",
"formik": "^2.2.9",
"jquery": "^3.6.0",
"react": "^17.0.2",
"react-bootstrap": "^2.0.2",
"react-day-picker": "^7.4.10",
"react-dom": "^17.0.2",
"react-router-dom": "^6.0.2",
"react-scripts": "4.0.3",
"react-toastify": "^8.1.0",
"react-tooltip": "^4.2.21",
"react-yup": "^1.23.0",
"web-vitals": "^1.0.1",
"yup": "^0.32.11"

},

Answer 1

Yup.string()您需要先使用类似或 的架构类型，Yup.number()然后才能使用required().

只有模式才有这个required属性：

BaseSchema, MixedSchema, BooleanSchema, StringSchema, NumberSchema, DateSchema, ObjectSchema, ArraySchema

它不是直接从 Yup 导出的。