Function isBlob

src/helpers/form-data.ts:36–42

(object: any)

const NAME = Symbol.toStringTag;

export const isBlob = (object: any) =>
  typeof object === 'object' &&
  typeof object.arrayBuffer === 'function' &&
  typeof object.type === 'string' &&
  typeof object.stream === 'function' &&
  typeof object.constructor === 'function' &&
  /^(Blob|File)$/.test(object[NAME]);

const getFooter = (boundary: string) => `${dashes}${boundary}${dashes}${carriage.repeat(2)}`;