import * as pulumi from "@pulumi/pulumi";
/**
 * Extracts a substring from the given string.
 */
export declare function substr(args: SubstrArgs, opts?: pulumi.InvokeOptions): Promise<SubstrResult>;
export interface SubstrArgs {
    input: string;
    length: number;
    offset: number;
}
export interface SubstrResult {
    readonly result: string;
}
/**
 * Extracts a substring from the given string.
 */
export declare function substrOutput(args: SubstrOutputArgs, opts?: pulumi.InvokeOutputOptions): pulumi.Output<SubstrResult>;
export interface SubstrOutputArgs {
    input: pulumi.Input<string>;
    length: pulumi.Input<number>;
    offset: pulumi.Input<number>;
}