import type { VNode } from './vnodes';
import type { Template } from './template';
import type { VM } from './vm';
import type { Stylesheet } from '@lwc/shared';
export declare function updateStylesheetToken(vm: VM, template: Template, legacy: boolean): void;
export declare function getStylesheetsContent(vm: VM, template: Template): ReadonlyArray<string>;
/**
 * If the component that is currently being rendered uses scoped styles,
 * this returns the unique token for that scoped stylesheet. Otherwise
 * it returns null.
 * @param owner
 * @param legacy
 */
export declare function getScopeTokenClass(owner: VM, legacy: boolean): string | null;
export declare function createStylesheet(vm: VM, stylesheets: ReadonlyArray<string>): VNode[] | null;
export declare function unrenderStylesheet(stylesheet: Stylesheet): void;
export declare function isValidScopeToken(token: unknown): boolean;
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