three.js/examples/jsm/math/Lut.d.ts

import {
	Color
} from '../../../src/Three';

export class Lut {

	constructor( colormap?: string, numberofcolors?: number );
	lut: Color[];
	map: object[];
	n: number;
	minV: number;
	maxV: number;

	set( value: Lut ): this;
	setMin( min: number ): this;
	setMax( max: number ): this;
	setColorMap( colormap?: string, numberofcolors?: number ): this;
	copy( lut: Lut ): this;
	getColor( alpha: number ): Color;
	addColorMap( colormapName: string, arrayOfColors: number[][] ): void;
	createCanvas(): HTMLCanvasElement;
	updateCanvas( canvas: HTMLCanvasElement ): HTMLCanvasElement;

}

export interface ColorMapKeywords {
	rainbow: number[][];
	cooltowarm: number[][];
	blackbody: number[][];
	grayscale: number[][];
}