import { DataCollector } from "src/core/contract/DataCollector";
import { ConfigItem } from "src/core/model/TrackerConfig";
import { TrackerVariableType } from "src/core/model/TrackerVariableType";
/**
 * Base collector with lazy evaluation and variable mapping.
 * Mirrors Android BaseDataCollector.
 *
 * Collectors only evaluate a variable if it is mapped in the backend config.
 */
export declare abstract class BaseDataCollector implements DataCollector {
    abstract collect(): Map<TrackerVariableType, unknown>;
    /**
     * Only call the supplier if the variable is actually mapped in at least one config.
     * This is the "lazy evaluation" pattern from Android.
     */
    protected collectIfNeeded(data: Map<TrackerVariableType, unknown>, variableType: TrackerVariableType, supplier: () => unknown, configs?: ConfigItem[]): void;
    /**
     * Maps collected TrackerVariableType → backend field names using config variableMappings.
     */
    static mapVariablesToBackend(config: ConfigItem, variables: Map<TrackerVariableType, unknown>): Record<string, unknown>;
    /**
     * Check if a variable type is mapped in any config's variableMappings.
     */
    private static isVariableMapped;
}