minecraft-assets/data/minecraft/recipe/ender_chest.json

{
  "type": "minecraft:crafting_shaped",
  "category": "misc",
  "key": {
    "#": "minecraft:obsidian",
    "E": "minecraft:ender_eye"
  },
  "pattern": [
    "###",
    "#E#",
    "###"
  ],
  "result": {
    "count": 1,
    "id": "minecraft:ender_chest"
  }
}