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# block-stream A stream of blocks. Write data into it, and it'll output data in buffer blocks the size you specify, padding with zeroes if necessary. ```javascript var block = new BlockStream(512) fs.createReadStream("some-file").pipe(block) block.pipe(fs.createWriteStream("block-file")) ``` When `.end()` or `.flush()` is called, it'll pad the block with zeroes.