renewable-resources/data/renewable/recipe/trident.json

{
  "type": "minecraft:crafting_shaped",
  "category": "equipment",
  "pattern": [
    "PPP",
    " H ",
    " S "
  ],
  "key": {
    "P": "minecraft:prismarine_shard",
    "H": "minecraft:heart_of_the_sea",
    "S": "minecraft:stick"
  },
  "result": {
    "id": "minecraft:trident",
    "count": 1
  }
}