wadouri loadFileRequest.ts

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  import parseImageId from './parseImageId';
import fileManager from './fileManager';
 
function loadFileRequest(uri: string): Promise<ArrayBuffer> {
  const parsedImageId = parseImageId(uri);
  const fileIndex = parseInt(parsedImageId.url, 10);
  const file = fileManager.get(fileIndex);
 
  return new Promise<ArrayBuffer>((resolve, reject) => {
    const fileReader = new FileReader();
 
    fileReader.onload = (e) => {
      const dicomPart10AsArrayBuffer = e.target.result as ArrayBuffer;
 
      resolve(dicomPart10AsArrayBuffer);
    };
 
    fileReader.onerror = reject;
 
    fileReader.readAsArrayBuffer(file);
  });
}
 
export default loadFileRequest;