import { Notebook } from "./notebooks";
export declare module NotebookTransformers {
    /**
     * Returns true if a notebook has a module, that has a variable with name == cellName
     * @param notebook
     * @param cellName
     */
    function hasCell(notebook: Notebook, cellName: string): boolean;
    /**
     * Replaces a named variable in the notebook with a new value.
     *
     * Pass true for appendIfNotFound to append the variable if it isn't already in the notebook - this is useful to override
     * libraries built into the @observable/runtime
     *
     * Returns undefined if the variable isn't found and appendIfNotFound == false
     *
     * @param notebook
     * @param variableName
     * @param newValue
     * @param inputs
     * @param appendIfNotFound
     */
    function setNotebookVariable(notebook: Notebook, variableName: string, newValue: ((...args: any[]) => any), inputs?: string[] | undefined, appendIfNotFound?: boolean): Notebook | undefined;
}