/**
 * Represents a compiled shader program. Checks compilation errors.
 * Caches attribute and uniform locations.
 */
export class Shader {
    /**
     * Compile and link a shader program.
     * @param {WebGLRenderingContext} gl
     * @param {String} vs - vertex shader source text
     * @param {String} fs - fragment shader source text
     * @param {String} preamble - (optional) definitions to prepend to both vs/fs
     */
    constructor(gl: WebGLRenderingContext, vs: string, fs: string, preamble?: string);
    gl: WebGLRenderingContext;
    vs: WebGLShader | null;
    fs: WebGLShader | null;
    program: WebGLProgram | null;
    aLoc: Map<any, any>;
    uLoc: Map<any, any>;
    use(): void;
    uniform(name: any): any;
    attrib(name: any): any;
    relink(): void;
    _compile(type: any, source: any): WebGLShader | null;
    _link(vertexShader: any, fragmentShader: any): WebGLProgram | null;
    delete(): void;
}