Constant CONTINUATION_BIT 

const CONTINUATION_BIT: u8 = 0b10000000;

Wasm encodes integers according to the LEB128 format, which specifies that only 7 bits of every byte are used to store the integer’s bits. The 8th bit is always used as a bitflag for whether the next byte shall also be read as part of the current integer. Therefore, it can be called a continuation bit, which is stored here as a global constant to improve code readability.