export declare const ASSET_PATH: string;
export interface ThemeObject {
    [key: string]: string;
}
/**
 * The keys used to refer to which example and
 * which theme the user wants to see.
 */
export declare enum keys {
    EXAMPLE = "example",
    THEME = "theme",
    HEADER = "header"
}
/**
 * Create an object consisting only of changed values
 *
 * @function diff
 * @param {Object} original - Source object to compare against
 * @param {Object} updated - New object with partially updated values
 * @return {Object} Object containing keys with changed values
 */
export declare const diff: <O extends Record<string, unknown>>(original: O, updated: O) => O;
/**
 * Convert a JS object to a stringified CSS rule, using object keys as variable names.
 *
 * @function objToVars
 * @param {Object} obj - JS Object, where the keys are variable names (without leading `--` dashes)
 * @param {boolean} [compile] - If true, translates Stencila's Custom `:--root` Selector into `[data-itemscope='root']`
 * @return {string} Stringified CSS styleesheet containing variable declarations
 */
export declare const objToVars: (obj: ThemeObject, compile?: boolean) => string;
/**
 * Submit a PR to https://github.com/stencila/thema for a new theme.
 *
 * Uses the github `/new` route to create a new `styles.css` file
 * within `src/themes/<new-theme-name>` folder.
 */
export declare const submitPR: (name: string, theme: ThemeObject, baseName: string, baseTheme: ThemeObject) => void;