import { SpectrumElement } from '../../element/index.js';
import { LINEAR_PROGRESS_VALID_SIZES } from '../../mixins/index.js';
declare const ProgressBarBase_base: typeof SpectrumElement & {
    new (...args: any[]): import('../../mixins/index.js').SizedElementInterface;
    prototype: import('../../mixins/index.js').SizedElementInterface;
} & import('../../mixins/index.js').SizedElementConstructor & {
    new (...args: any[]): import('../../mixins/index.js').LinearProgressInterface;
    prototype: import('../../mixins/index.js').LinearProgressInterface;
};
/**
 * A non-focusable, read-only bar that shows task progress (0–100, or a custom
 * range) or an indeterminate loading animation when completion time is unknown.
 * Implements the WAI-ARIA `progressbar` role on the shadow `.swc-LinearProgress`
 * element (the host carries no ARIA).
 *
 * @attribute {ElementSize} size - The size of the progress bar.
 */
export declare abstract class ProgressBarBase extends ProgressBarBase_base {
    /**
     * The size of the progress bar.
     *
     * @default m
     */
    size: (typeof LINEAR_PROGRESS_VALID_SIZES)[number];
    /**
     * When true, the bar runs a looping fill animation and all four
     * `aria-value*` attributes are omitted from the DOM. The visible
     * value text is also omitted.
     *
     * @default false
     */
    indeterminate: boolean;
}
export {};