import { Args } from './types/common';
import { Output, IOutput } from './Output';
export declare class Variables {
    json: any;
    overwriteSyntax: RegExp;
    envRefSyntax: RegExp;
    selfRefSyntax: RegExp;
    stringRefSyntax: RegExp;
    optRefSyntax: RegExp;
    variableSyntax: RegExp;
    fileName: string;
    options: Args;
    out: Output;
    envVars: any;
    constructor(fileName: string, options?: Args, out?: IOutput, envVars?: any);
    populateJson(json: any): Promise<any>;
    populateObject(objectToPopulate: any): any;
    populateProperty(propertyParam: any, populateInPlace?: boolean): any;
    populateVariable(propertyParam: any, matchedString: any, valueToPopulate: any): any;
    overwrite(variableStringsString: any): any;
    getValueFromSource(variableString: any): any;
    getValueFromEnv(variableString: any): any;
    getValueFromString(variableString: any): any;
    getValueFromOptions(variableString: any): any;
    getValueFromSelf(variableString: any): any;
    getDeepValue(deepProperties: any, valueToPopulate: any): any;
    warnIfNotFound(variableString: any, valueToPopulate: any): boolean;
}