getBooleanTable

getBooleanTable.js

const getBooleanTable = number => Array(Math.pow(2, number))
  .fill()
  .map((_, idx) => idx)
  .map(num => num.toString(2).padStart(number, '0'))
  .map(stringOfBits =>
    stringOfBits.split('').map(bit => Boolean(parseInt(bit)))
  )

console.log(getBooleanTable(3))

// [
//   [false, false, false],
//   [false, false, true],
//   [false, true, false],
//   [false, true, true],
//   [true, false, false],
//   [true, false, true],
//   [true, true, false],
//   [true, true, true]
// ]

No need to use strings to manipulate bits. A few bitwise operators will do.
Programming in C for years before switching to JavaScript has finally paid off 😂

const getBooleanTable = number =>
  Array(Math.pow(2, number))
    .fill()
    .map((_, i) =>
      Array(number)
        .fill()
        .map((_, j) => Boolean((i >> j) & 1))
    )