three.js/examples/jsm/nodes/effects/LuminanceNode.d.ts

import { TempNode } from '../core/TempNode';
import { NodeBuilder } from '../core/NodeBuilder';
import { FunctionNode } from '../core/FunctionNode';
import { ConstNode } from '../core/ConstNode';
import { Node } from '../core/Node';

export class LuminanceNode extends TempNode {
  constructor(rgb: Node);

  rgb: Node;
  nodeType: string;

  generate(builder: NodeBuilder, output: string): string;
  copy(source: LuminanceNode): this;

  static Nodes: {
    LUMA: ConstNode;
    luminance: FunctionNode;
  }

}