import { PARSE_TYPE } from "../@types/types";
export default class StringUtil {
    constructor();
    static null2str(obj: any, key: string, defaultValue?: string): string;
    static null2int(obj: any, key: string, defaultValue?: number): number;
    static format(formtstring: string, ...args: Array<any>): string;
    static toString(obj: any): " " | undefined;
    static parse(target: any, _type: PARSE_TYPE): string;
}
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