import type { ClosureModule, RequireInfo } from '../closure/ClosureModule';
import type { TargetOption } from '../Plugin';
/**
 * Get module transform target, defaults to "esm".
 * If not ES or CommonJS module, result depend on target option;
 * @param target - Defaults to "esm".
 */
export declare function getTransTarget(module: ClosureModule, target?: TargetOption): TargetOption;
/**
 * Convert the required module request to relative.
 * @param originalModule - Absolute request for the original module.
 * @param requiredModule - Absolute request for the required module.
 * @returns Relative request for argument of transformed require statement.
 */
export declare function getRelativeRequest(originalModule: string, requiredModule: string): string;
/**
 * Get the require local variable name for the goog.require expression.
 * @returns Return null if not has.
 */
export declare function getRequiredVar(originalModule: ClosureModule, requiredModule: ClosureModule, namespace: string, info: RequireInfo): string | null;
/**
 * Get equivalent identifier name to replace the used goog.require expression.
 * @returns Return null if not has;
 * Return "null" if the original module is PROVIDE module;
 */
export declare function getRequireIdentifier(originalModule: ClosureModule, requiredModule: ClosureModule, namespace: string, info: RequireInfo): string | null;
/** Get the transformed require statement. */
export declare function getRequireStatement(originalModule: ClosureModule, requiredModule: ClosureModule, requireVar?: string | null | undefined, target?: TargetOption): string;
/** Get the transformed export statement. */
export declare function getExportStatement(module: ClosureModule, exportVar: string, target?: TargetOption): string;