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import { Buffer } from 'https://deno.land/std@0.132.0/node/buffer.ts'const size = 256let buffer = Buffer.allocUnsafe(size)
const messages = 'BCcDdEFfHPpQSX'.split('').reduce((acc, x) => {  const v = x.charCodeAt(0)  acc[x] = () => {    buffer[0] = v    b.i = 5    return b  }  return acc}, {})
const b = Object.assign(reset, messages, {  N: String.fromCharCode(0),  i: 0,  inc(x) {    b.i += x    return b  },  str(x) {    const length = Buffer.byteLength(x)    fit(length)    b.i += buffer.write(x, b.i, length, 'utf8')    return b  },  i16(x) {    fit(2)    buffer.writeUInt16BE(x, b.i)    b.i += 2    return b  },  i32(x, i) {    if (i || i === 0) {      buffer.writeUInt32BE(x, i)      return b    }    fit(4)    buffer.writeUInt32BE(x, b.i)    b.i += 4    return b  },  z(x) {    fit(x)    buffer.fill(0, b.i, b.i + x)    b.i += x    return b  },  raw(x) {    buffer = Buffer.concat([buffer.slice(0, b.i), x])    b.i = buffer.length    return b  },  end(at = 1) {    buffer.writeUInt32BE(b.i - at, at)    const out = buffer.slice(0, b.i)    b.i = 0    buffer = Buffer.allocUnsafe(size)    return out  }})
export default b
function fit(x) {  if (buffer.length - b.i < x) {    const prev = buffer        , length = prev.length
    buffer = Buffer.allocUnsafe(length + (length >> 1) + x)    prev.copy(buffer)  }}
function reset() {  b.i = 0  return b}