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fix: only return Observable types for NestJS if the option is switched on #823

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4 changes: 2 additions & 2 deletions integration/nestjs-metadata-grpc-js/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -34,9 +34,9 @@ export interface HeroServiceClient {
}

export interface HeroServiceController {
findOneHero(request: HeroById, metadata?: Metadata): Promise<Hero> | Observable<Hero> | Hero;
findOneHero(request: HeroById, metadata?: Metadata): Promise<Hero> | Hero;

findOneVillain(request: VillainById, metadata?: Metadata): Promise<Villain> | Observable<Villain> | Villain;
findOneVillain(request: VillainById, metadata?: Metadata): Promise<Villain> | Villain;

findManyVillain(request: Observable<VillainById>, metadata?: Metadata): Observable<Villain>;
}
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4 changes: 2 additions & 2 deletions integration/nestjs-metadata-restparameters/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -34,13 +34,13 @@ export interface HeroServiceClient {
}

export interface HeroServiceController {
findOneHero(request: HeroById, metadata: Metadata, ...rest: any): Promise<Hero> | Observable<Hero> | Hero;
findOneHero(request: HeroById, metadata: Metadata, ...rest: any): Promise<Hero> | Hero;

findOneVillain(
request: VillainById,
metadata: Metadata,
...rest: any
): Promise<Villain> | Observable<Villain> | Villain;
): Promise<Villain> | Villain;

findManyVillain(request: Observable<VillainById>, metadata: Metadata, ...rest: any): Observable<Villain>;
}
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4 changes: 2 additions & 2 deletions integration/nestjs-metadata/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -34,9 +34,9 @@ export interface HeroServiceClient {
}

export interface HeroServiceController {
findOneHero(request: HeroById, metadata?: Metadata): Promise<Hero> | Observable<Hero> | Hero;
findOneHero(request: HeroById, metadata?: Metadata): Promise<Hero> | Hero;

findOneVillain(request: VillainById, metadata?: Metadata): Promise<Villain> | Observable<Villain> | Villain;
findOneVillain(request: VillainById, metadata?: Metadata): Promise<Villain> | Villain;

findManyVillain(request: Observable<VillainById>, metadata?: Metadata): Observable<Villain>;
}
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4 changes: 2 additions & 2 deletions integration/nestjs-restparameters/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -33,9 +33,9 @@ export interface HeroServiceClient {
}

export interface HeroServiceController {
findOneHero(request: HeroById, ...rest: any): Promise<Hero> | Observable<Hero> | Hero;
findOneHero(request: HeroById, ...rest: any): Promise<Hero> | Hero;

findOneVillain(request: VillainById, ...rest: any): Promise<Villain> | Observable<Villain> | Villain;
findOneVillain(request: VillainById, ...rest: any): Promise<Villain> | Villain;

findManyVillain(request: Observable<VillainById>, ...rest: any): Observable<Villain>;
}
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2 changes: 1 addition & 1 deletion integration/nestjs-simple-restparameters/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ export interface HeroServiceClient {
}

export interface HeroServiceController {
findCurrentUser(request: Empty, ...rest: any): Promise<User> | Observable<User> | User;
findCurrentUser(request: Empty, ...rest: any): Promise<User> | User;
}

export function HeroServiceControllerMethods() {
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6 changes: 3 additions & 3 deletions integration/nestjs-simple-usedate/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -53,13 +53,13 @@ export interface HeroServiceClient {
export interface HeroServiceController {
addOneHero(request: Hero): void;

findOneHero(request: HeroById): Promise<Hero> | Observable<Hero> | Hero;
findOneHero(request: HeroById): Promise<Hero> | Hero;

findOneVillain(request: VillainById): Promise<Villain> | Observable<Villain> | Villain;
findOneVillain(request: VillainById): Promise<Villain> | Villain;

findManyVillain(request: Observable<VillainById>): Observable<Villain>;

findManyVillainStreamIn(request: Observable<VillainById>): Promise<Villain> | Observable<Villain> | Villain;
findManyVillainStreamIn(request: Observable<VillainById>): Promise<Villain> | Villain;

findManyVillainStreamOut(request: VillainById): Observable<Villain>;
}
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6 changes: 3 additions & 3 deletions integration/nestjs-simple/hero.ts
Original file line number Diff line number Diff line change
Expand Up @@ -49,13 +49,13 @@ export interface HeroServiceClient {
export interface HeroServiceController {
addOneHero(request: Hero): void;

findOneHero(request: HeroById): Promise<Hero> | Observable<Hero> | Hero;
findOneHero(request: HeroById): Promise<Hero> | Hero;

findOneVillain(request: VillainById): Promise<Villain> | Observable<Villain> | Villain;
findOneVillain(request: VillainById): Promise<Villain> | Villain;

findManyVillain(request: Observable<VillainById>): Observable<Villain>;

findManyVillainStreamIn(request: Observable<VillainById>): Promise<Villain> | Observable<Villain> | Villain;
findManyVillainStreamIn(request: Observable<VillainById>): Promise<Villain> | Villain;
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@stephenh stephenh Oct 23, 2023

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@alexkb Disclaimer that I don't use NestJS, but wouldn't just Promise<Villain> make more sense here as a return type?

I agree that your PR is already better than the previous Observable<T> | Promise<T> | T, which imo seems just kind of maddening to use as a caller, b/c you'd have to constantly be checking what the return value was.

...ah, maybe this interface is meant for the server-side to implement, and we want to give flexibility to the server to return what it wants.

Are these interfaces used by both the client and the server? I don't remember...


findManyVillainStreamOut(request: VillainById): Observable<Villain>;
}
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4 changes: 2 additions & 2 deletions src/generate-nestjs.ts
Original file line number Diff line number Diff line change
Expand Up @@ -55,13 +55,13 @@ export function generateNestjsServiceController(
let returns: Code;
if (isEmptyType(methodDesc.outputType)) {
returns = code`void`;
} else if (options.returnObservable || methodDesc.serverStreaming) {
} else if (methodDesc.serverStreaming) {
returns = code`${responseObservable(ctx, methodDesc)}`;
} else {
// generate nestjs union type
returns = code`
${responsePromise(ctx, methodDesc)}
| ${responseObservable(ctx, methodDesc)}
${options.returnObservable ? "\n| " + responseObservable(ctx, methodDesc) : ''}
| ${responseType(ctx, methodDesc)}
`;
}
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