export type PublicMarketSourceType = 'sportsbook' | 'feed' | 'provider' | 'unknown';
export declare function normalizeMarketSourceToken(value: unknown): string | null;
export declare function getPublicMarketSourceMeta(value: unknown): {
    source: string | null;
    label: string | null;
    type: PublicMarketSourceType;
};
export declare function hasNamedMarketSource(value: unknown): boolean;
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