import * as pulumi from "@pulumi/pulumi";
/**
 * Returns a copy of the string with all Unicode letters mapped to their lower case.
 */
export declare function lower(args: LowerArgs, opts?: pulumi.InvokeOptions): Promise<LowerResult>;
export interface LowerArgs {
    input: string;
}
export interface LowerResult {
    readonly result: string;
}
/**
 * Returns a copy of the string with all Unicode letters mapped to their lower case.
 */
export declare function lowerOutput(args: LowerOutputArgs, opts?: pulumi.InvokeOutputOptions): pulumi.Output<LowerResult>;
export interface LowerOutputArgs {
    input: pulumi.Input<string>;
}