[英]Can't get property dependency injection to work in React project
我需要以类似于 C# 或 Java 的语法方式为反应项目注入一些非常基本的依赖项注入。 使用上下文或通过道具注入不是一种选择。 到目前为止,我尝试了三种解决方案:
但是,这些解决方案都没有奏效,如果存在某种配置问题,就会提出问题。
使用 Inversify / Inversify-React-Decorators / Rect.DI
SomeService.ts
import { inject, injectable } from "inversify";
import { TYPES, ITokenProvider, IFileService } from "../injectables";
import { lazyInject, DIContainer } from "../inversify.config";
export class SomeService {
@inject(TYPES.ITokenProvider) private tokenProvider!: ITokenProvider; //Inversify
//@lazyInject(TYPES.ITokenProvider) private tokenProvider!: ITokenProvider;//Inversify-r-d
//@Inject tokenProvider!: TokenProvider; //react-di
(...)
}
反转配置文件
import "reflect-metadata";
import { Container } from "inversify";
import getDecorators from "inversify-inject-decorators";
import { TYPES, ITokenProvider, } from "./injectables";
import { TokenProvider } from "./Services/TokenProvider"
const DIContainer = new Container();
DIContainer.bind<ITokenProvider>(TYPES.ITokenProvider).toConstructor(TokenProvider);
const { lazyInject } = getDecorators(DIContainer, false);
export { DIContainer, lazyInject }
注射剂.ts
export interface ITokenProvider {
getSomeToken(): Promise<string>
}
TokenProvider.ts
import "reflect-metadata";
import * as microsoftTeams from "@microsoft/teams-js";
import { injectable } from "inversify";
import { ITokenProvider } from '../injectables';
@injectable()
export class TokenProvider implements ITokenProvider {
public constructor() { }
public async getSomeToken(): Promise<string> {
(...)
}
}
App.tsx(由 react-di 使用,而不是 inversify.config)
@Module({
providers: [
{ provide: AccessTokenProvider, useClass: AccessTokenProvider },
]
})
错误
React-DI 和 Inversify 将无法解决依赖关系,从而导致属性出现未定义的错误。 反转装饰器会导致以下错误:
TokenProvider.ts:8 Uncaught ReferenceError: Cannot access 'SomeService' before initialization
at Module.SomeService (VM8 main.chunk.js:248)
at Module../src/inversify.config.ts (inversify.config.ts:11)
(...)
配置
tsconfig.json
{
"include": [
"src/*"
],
"compilerOptions": {
"target": "es5",
"jsx": "react",
"allowSyntheticDefaultImports": true,
"lib": [
"dom",
"dom.iterable",
"esnext"
],
"allowJs": true,
"skipLibCheck": true,
"esModuleInterop": true,
"experimentalDecorators": true,
"emitDecoratorMetadata": true,
"strict": true,
"forceConsistentCasingInFileNames": true,
"module": "esnext",
"moduleResolution": "node",
"resolveJsonModule": true,
"isolatedModules": true,
"noEmit": true,
"types": [ "reflect-metadata" ]
}
}
我还尝试在不同的类周围移动"reflect-metadata"
。
嵌套@lazyInject 不起作用: https://github.com/inversify/InversifyJS/issues/941
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