import * as pulumi from "@pulumi/pulumi";
/**
 * Converts all cased letters in the given string to uppercase.
 */
export declare function upper(args: UpperArgs, opts?: pulumi.InvokeOptions): Promise<UpperResult>;
export interface UpperArgs {
    input: string;
}
export interface UpperResult {
    readonly result: string;
}
/**
 * Converts all cased letters in the given string to uppercase.
 */
export declare function upperOutput(args: UpperOutputArgs, opts?: pulumi.InvokeOutputOptions): pulumi.Output<UpperResult>;
export interface UpperOutputArgs {
    input: pulumi.Input<string>;
}