33 lines
773 B
TypeScript
33 lines
773 B
TypeScript
import {
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CallHandler,
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ExecutionContext,
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Injectable,
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NestInterceptor,
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} from '@nestjs/common';
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import { Observable } from 'rxjs';
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import { map } from 'rxjs/operators';
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export interface ResponseFormat<T> {
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success: boolean;
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data: T;
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meta?: any;
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}
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@Injectable()
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export class ResponseInterceptor<T> implements NestInterceptor<T, any> {
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intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
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return next.handle().pipe(
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map((data) => {
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// If data is already formatted or is a file buffer/stream, pass through
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if (data && typeof data === 'object' && ('success' in data || 'data' in data)) {
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return data;
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}
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return {
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success: true,
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data,
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};
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}),
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);
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}
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}
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