渲染部署时出现类型错误和模块未找到错误

Question

我正在尝试在渲染上部署 MERN 应用程序。 构建出现此错误。

../backend/src/models/hotel.ts(1,22): error TS2307: Cannot find module 'mongoose' or its corresponding type declarations.
../backend/src/models/user.ts(1,22): error TS2307: Cannot find module 'mongoose' or its corresponding type declarations.
../backend/src/models/user.ts(2,20): error TS2307: Cannot find module 'bcryptjs' or its corresponding type declarations.
../backend/src/models/user.ts(22,8): error TS2683: 'this' implicitly has type 'any' because it does not have a type annotation.
../backend/src/models/user.ts(23,9): error TS2683: 'this' implicitly has type 'any' because it does not have a type annotation.
../backend/src/models/user.ts(23,43): error TS2683: 'this' implicitly has type 'any' because it does not have a type annotation.

user.ts 文件是：

import mongoose from "mongoose";
import bcrypt from "bcryptjs";

export type UserType = {
    _id: string;
    email: string;
    password: string;
    firstName: string;
    lastName: string;
};

const userSchema = new mongoose.Schema({
    email:{type:String,required:true,unique:true},
    password:{type:String,required:true},
    firstName:{type:String,required:true},
    lastName:{type:String,required:true}
});

//function to be executed before saving the user to the database
//this is actually a middleware
userSchema.pre("save", async function(next: mongoose.CallbackWithoutResultAndOptionalError){
    if(this.isModified("password")){
        this.password = await bcrypt.hash(this.password,10);
    }
    next();
});

const User = mongoose.model<UserType>("User",userSchema);

export default User;

我通过此命令安装了 mongoose 和 bycryptjs 类型：

npm install --save-dev @types/mongoose @types/bcryptjs

我的tsconfig.json文件包括：

{
  "compilerOptions": {
    "types": ["node"]
  }
}

当我将鼠标悬停在此处时，我的 VS Code 会显示以下内容

this: mongoose.Document<unknown, {}, mongoose.FlatRecord<{
    firstName: string;
    lastName: string;
    email: string;
    password: string;
}>> & mongoose.FlatRecord<{
    firstName: string;
    lastName: string;
    email: string;
    password: string;
}> & {
    ...;
}

这些是我的版本：

  "@types/mongodb": "^3.6.8",
  "@types/mongoose": "^5.11.97",
  "@types/bcryptjs": "^2.4.6",

"bcryptjs": "^2.4.3",
"mongodb": "^6.3.0",
"mongoose": "^6.0.12",

这是我的渲染构建命令。

cd frontend && npm install && npm run build && cd ../backend && npm run build

但我仍然收到此错误，我不知道该怎么办。

Answer 1

这更多是与 npm 安装相关的错误。 在项目的 render.com 设置中，您应该有一个如下的构建命令：

npm install && npm run build

对于我的项目，我有 src/ 相对路径，不要注意。