minecraft-assets/data/minecraft/recipes/compass.json

{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    " # ",
    "#X#",
    " # "
  ],
  "key": {
    "#": {
      "item": "minecraft:iron_ingot"
    },
    "X": {
      "item": "minecraft:redstone"
    }
  },
  "result": {
    "item": "minecraft:compass"
  }
}