BufferAPI 
    Node API: Buffer
Defines the types and members of the Node.js buffer built-in module.
See also
Types
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                  Implements the Blob type from the Node.js buffer built-in module. Blobs are read-only chunks of byte data which can be used to derive buffers, strings, and other objects.
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                  Implements the File class from the Node.js buffer built-in module. This type is basically a specialized Blob with additional name and lastModified fields.