buffer.writeInt8()

buf.writeInt8(value, offset[, noAssert])

Writes value to the Buffer at the specified offset. The value should be a valid signed 8-bit integer. Behavior is not defined when value is anything other than a signed 8-bit integer.

Set noAssert to true to skip validation of value and offset. This means that value may be too large for the specific function and offset may be beyond the end of the Buffer leading to the values being silently dropped. This should not be used unless you are certain of correctness.

The value is interpreted and written as a two's complement signed integer.

const buf = Buffer.allocUnsafe(2);
buf.writeInt8(2, 0);
buf.writeInt8(-2, 1);
console.log(buf);
  // Prints: <Buffer 02 fe>