import type { ProviderSettings } from "../settings.js";
export type ModelRoleApplyResult = {
    providers: ProviderSettings[];
    providerId: string | null;
};
/**
 * Applies a role-based model config string to the provider list.
 * Moves the target provider to the front and overrides its model.
 *
 * Returns the original providers unchanged when config is undefined or the provider is not found.
 */
export declare function modelRoleApply(providers: ProviderSettings[], modelConfig: string | undefined): ModelRoleApplyResult;
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