KubeJS 1.12.2 Recipes

recipes.js

// This script replaces beacon recipe with new one

// Listen to Crafing Table recipe event
events.listen('recipes.crafting_table', function (event) {
  // Remove Beacon recipe
  event.removeID('minecraft:beacon')
  // Add new Beacon recipe. new_beacon is the ID of recipe, minecraft:beacon is the item
  event.addShaped('new_beacon', 'minecraft:beacon', ['CGC', 'GSG', 'CGC'], {
    G: 'ore:blockGlass', // And blockGlass
    S: 'ore:netherStar', // Any netherStar
    C: [{ item: 'minecraft:coal', data: 1 }, 'minecraft:carrot'] // Charcoal or carrot
  })
})