bit-maker.js

#!/usr/bin/env node

function* gen(
  m = Number.parseInt(process.argv[2]) || 15,
  n = Number.parseInt(process.argv[3]) || 26,
  data = 0
) {
  // finish iteration
  if (n-- === 0) {
    if (m === 0)
      yield data
    return
  }

  // advance to next bit
  data <<= 1

  // try left and right paths
  yield* gen(m, n, data)
  if (m > 0) {
    yield* gen(m - 1, n, data + 1)
  }
}