Cancel http.put()/http.get() and return value instead of creating/sending request

Question

given the following code:

service:

getList(){
    return return this.http.request("put", url_, options_)
}  

component:

submitRequest(reset?){
    this.httpService.getList().subscribe((response) => {
        //if reset return an empty array
        //server cannot return an empty array
    })
}

and I want to do something like:

component:

submitRequest(reset?){
    this.httpService.getList().pipe(someOperator(() => {
        // if reset DO NOT MAKE HTTP CALL BUT INSTEAD RETURN []
    })).subscribe((response) => {
        //IF reset NO SERVER CALL WAS MADE BUT GOT [] FROM someOperator
        //SERVER RESPONSE ONLY IF NO reset
    })
}

how do i achieve this using RXJS ?

Answer 1

something like: if (reset) return of([])?

submitRequest(reset?){
    if (reset) return of([])

    this.httpService.getList().pipe(someOperator(() => {
        // if reset DO NOT MAKE HTTP CALL BUT INSTEAD RETURN []
    })).subscribe((response) => {
        //IF reset NO SERVER CALL WAS MADE BUT GOT [] FROM someOperator
        //SERVER RESPONSE ONLY IF NO reset
    })
}