【发布时间】：2021-12-29 14:58:34
【问题描述】：
当我尝试将 Objection.js 模型注入 NestJs 服务时：
constructor(@Inject('UserModel') private readonly modelClass: ModelClass<UserModel>) {}
我在编译时收到Maximum call stack size exceeded 错误。我认为这是由于我的其他模型和一些循环依赖。我删除了单个模型之外的所有内容，但仍然出现异常。
如果我在 tsconfig.json 中设置 "strict": true，代码将按预期构建和运行。我该如何补救这种情况？
下面是使用的模型和包。
基础模型
export default class BaseModel extends Model {
readonly id: number;
createdBy: number;
created!: string;
modified: string;
modifiedBy: number;
}
用户模型
export default class UserModel extends BaseModel {
static tableName = 'users';
static virtualAttributes = ['fullName'];
firstName!: string;
lastName!: string;
company?: string;
email!: string;
fullName(): string {
return `${this.firstName} ${this.lastName}`;
}
static jsonSchema = {
type: 'object',
required: ['firstName', 'lastName', 'email'],
properties: {
id: { type: 'number' },
firstName: { type: 'string' },
lastName: { type: 'string' },
company: { type: 'string' },
email: { type: 'string' },
},
};
}
包：
"dependencies": {
"@apollo/gateway": "^0.44.0",
"@nestjs/common": "^8.2.1",
"@nestjs/core": "^8.2.1",
"@nestjs/graphql": "^9.1.1",
"@nestjs/platform-express": "^8.0.0",
"ajv-formats": "^2.1.1",
"apollo-server-express": "^3.5.0",
"class-transformer": "^0.4.0",
"class-validator": "^0.13.1",
"dayjs": "^1.10.7",
"dotenv": "^10.0.0",
"graphql-subscriptions": "^2.0.0",
"knex": "^0.95.14",
"objection": "^3.0.0",
"pg": "^8.7.1",
"reflect-metadata": "^0.1.13",
"rimraf": "^3.0.2",
"rxjs": "^7.4.0"
},
"devDependencies": {
"@nestjs/cli": "^8.0.0",
"@nestjs/schematics": "^8.0.0",
"@nestjs/testing": "^8.0.0",
"@types/express": "^4.17.13",
"@types/jest": "^27.0.1",
"@types/node": "^16.0.0",
"@types/supertest": "^2.0.11",
"@typescript-eslint/eslint-plugin": "^5.0.0",
"@typescript-eslint/parser": "^5.0.0",
"eslint": "^8.0.1",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-import": "2.25.2",
"eslint-plugin-prettier": "^4.0.0",
"jest": "^27.2.5",
"prettier": "^2.3.2",
"source-map-support": "^0.5.20",
"supertest": "^6.1.3",
"ts-jest": "^27.0.3",
"ts-loader": "^9.2.3",
"ts-morph": "^12.2.0",
"ts-node": "^10.0.0",
"tsconfig-paths": "^3.10.1",
"typescript": "^4.4.2"
},
【问题讨论】：
-
你们的模型是圆形的吗？即它们相互引用？
-
我认为这可能是罪魁祸首，但我删除了发布的用户之外的所有模型，但我仍然收到此错误。
-
通常像这样的最大堆大小错误来自内存泄漏，这在循环文件/循环类中很常见。当您
nest build时，您是否收到此错误？ -
我确实收到了嵌套构建错误。我知道这是一个编译错误。有趣的是，如果我在 tsconfig.json 中设置
"strict": true，代码会按预期构建和运行。 -
那么最后一个问题：您是否仍然使用
tsc得到这个错误？
标签： node.js npm nestjs knex.js objection.js