{
  "_readme": [
    "UTFCN curated equivalence rules (the 'verified' tier — safe to auto-apply, incl. Force mode).",
    "",
    "You rarely NEED rules: UTFCN already auto-detects any custom node whose input",
    "name->type map and ordered output types are IDENTICAL to a core node ('exact'",
    "tier), and surfaces looser 'partial' matches as suggestions. Add a rule here",
    "only to (a) bless a partial match as safe to auto-apply, or (b) fix up slots",
    "whose NAMES differ so the swap stays lossless.",
    "",
    "Schema — 'rules' maps a source node type to ONE target or an ordered list of",
    "targets (first installed one wins, so put the core node first):",
    "",
    "  \"rules\": {",
    "    \"SourceNodeType\": [",
    "      {",
    "        \"to\": \"TargetNodeType\",",
    "        \"note\": \"why this is equivalent (shown in the preview)\",",
    "        \"inputs\":  { \"srcInputName\":  \"dstInputName\"  },",
    "        \"widgets\": { \"srcWidgetName\": \"dstWidgetName\" },",
    "        \"outputs\": { \"srcOutputName\": \"dstOutputName\" }",
    "      }",
    "    ]",
    "  }",
    "",
    "Any input/widget/output slot you don't list is matched by identical name, then",
    "by type+order. Don't edit this file for your own rules — put those in",
    "user_mappings.json (same schema); it is merged on top and survives updates.",
    "",
    "The rules below were mined from installed packs (ComfyUI_essentials, KJNodes,",
    "was-node-suite) and verified lossless against the real core signatures. Rules",
    "for nodes you don't have installed are simply ignored."
  ],

  "rules": {
    "GetImageSize+": [
      {
        "to": "GetImageSize",
        "note": "essentials Get Image Size == core Get Image Size; 'count' is core's 'batch_size'.",
        "outputs": { "count": "batch_size" }
      }
    ],
    "MaskPreview+": [
      {
        "to": "MaskPreview",
        "note": "essentials mask preview == core MaskPreview (same single-MASK preview node)."
      }
    ],

    "BOOLConstant": [
      {
        "to": "PrimitiveBoolean",
        "note": "KJ boolean constant == core Primitive Boolean (single BOOLEAN passthrough)."
      }
    ],
    "INTConstant": [
      {
        "to": "PrimitiveInt",
        "note": "KJ int constant == core Primitive Int. Core adds a (fixed) control_after_generate; value is identical."
      }
    ],
    "FloatConstant": [
      {
        "to": "PrimitiveFloat",
        "note": "KJ float constant == core Primitive Float. KJ rounds to 6 decimals; negligible for a UI constant."
      }
    ],

    "Convert Masks to Images": [
      {
        "to": "MaskToImage",
        "note": "WAS mask->image == core MaskToImage (broadcast MASK to a 3-channel IMAGE).",
        "inputs": { "masks": "mask" }
      }
    ],
    "Mask Invert": [
      {
        "to": "InvertMask",
        "note": "WAS mask invert == core InvertMask (1.0 - mask).",
        "inputs": { "masks": "mask" }
      }
    ]
  }
}