/**
 * Utilities for parsing Google Firestore REST API document fields
 * into plain JavaScript values.
 */
type FirestoreValue = {
    stringValue: string;
} | {
    integerValue: string;
} | {
    doubleValue: number;
} | {
    booleanValue: boolean;
} | {
    timestampValue: string;
} | {
    nullValue: null;
} | {
    mapValue: {
        fields?: Record<string, FirestoreValue>;
    };
} | {
    arrayValue: {
        values?: FirestoreValue[];
    };
};
export type { FirestoreValue };
export type FirestoreFields = Record<string, FirestoreValue>;
/** Extract a string from a Firestore field. */
export declare function getString(fields: FirestoreFields, key: string): string | null;
/** Extract a number from a Firestore field (handles both integerValue and doubleValue). */
export declare function getNumber(fields: FirestoreFields, key: string): number | null;
/** Extract a boolean from a Firestore field. */
export declare function getBoolean(fields: FirestoreFields, key: string): boolean | null;
/** Extract a Date from a Firestore timestamp field. */
export declare function getTimestamp(fields: FirestoreFields, key: string): Date | null;
/** Extract nested map fields from a Firestore field. */
export declare function getMapFields(fields: FirestoreFields, key: string): FirestoreFields | null;
/** Extract an array of values from a Firestore field. */
export declare function getArray(fields: FirestoreFields, key: string): FirestoreValue[] | null;
/** Extract string values from an array field. */
export declare function getStringArray(fields: FirestoreFields, key: string): string[] | null;
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