Bit arrays represent a sequence of 1s and 0s, and are a convenient syntax for constructing and manipulating binary data.

Each segment of a bit array can be given options to specify the representation used for that segment.

• size: the size of the segment in bits.
• unit: how many times to repeat the segment.
• bits: a nested bit array of any size.
• bytes: a nested byte-aligned bit array.
• float: a 64 bits floating point number.
• int: an int with a default size of 8 bits.
• big: big endian.
• little: little endian.
• native: the endianness of the processor.
• utf8: utf8 encoded text.
• utf16: utf16 encoded text.
• utf32: utf32 encoded text.

Bit arrays have limited support when compiling to JavaScript, not all options can be used. Full bit array support will be implemented in future.