The specified type '{ file: ArrayBuffer; url: string; }' cannot be assigned to type '{ file: Blob; url: string; }'

This method is causing an error. Is there a way to fix it without changing the return type of the method? Are there any casts that can be applied to resolve the error?

private downloadIt(url: string, applicationData: any, getRequest?: boolean): Observable<{ file: Blob, url: string }> {        
    return this.http.get(url, applicationData, { responseType: 'blob' }).pipe(
        map(file => {
            const url = this.window.window.URL.createObjectURL(file);
            return { file, url };
        })
    );

Answer №1

Check out this solution:

function fetchDataFromUrl(url: string, data: any, isGetRequest?: boolean): Observable<{ file: Blob, url: string }> {        
    return this.http.get(url, data, { responseType: 'blob' }).pipe(
        map(response => {
            const objectURL = this.window.window.URL.createObjectURL(response);
            const blobData = new Blob([new Uint8Array(response)]);
            return { file: blobData, url: objectURL };
        })
    );

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