buffer.File.slice

interface Blob

• readonly size: number
• readonly type: string
• arrayBuffer(): Promise<ArrayBuffer>;

  Consume the blob as an ArrayBuffer

• bytes(): Promise<NonSharedUint8Array>;

  bytes(): Promise<Uint8Array<ArrayBuffer>>;

  Consume as a Uint8Array, backed by an ArrayBuffer

• slice(

  start?: number,

  end?: number,

  contentType?: string

  ): Blob;
• stream(): ReadableStream<NonSharedUint8Array>;

  stream(): ReadableStream<Uint8Array<ArrayBuffer>>;

  Returns a readable stream of the blob's contents

• text(): Promise<string>;