Challenge #17: 💣 Grinch's bombs

The Grinch has been up to his tricks in the North Pole and has planted explosive coal bombs 💣 in the elves' toy factory. He wants all the toys to be rendered useless, and that's why he has left a grid where some cells have explosive coal (true) and others are empty (false).

The elves need your help to map the dangerous areas. Each empty cell should display a number indicating how many explosive coal bombs there are in the adjacent positions, including diagonals.

detectBombs([
  [true, false, false],
  [false, true, false],
  [false, false, false]
])
// [
//   [1, 2, 1],
//   [2, 1, 1],
//   [1, 1, 1]
// ]

detectBombs([
  [true, false],
  [false, false]
])
// [
//   [0, 1],
//   [1, 1]
// ]

detectBombs([
  [true, true],
  [false, false],
  [true, true]
])

// [
//   [1, 1],
//   [4, 4],
//   [1, 1]
// ]

Note: Want a hint? You've surely played the Minesweeper game before… 😉