declare namespace Ext {
    export namespace data {
        export namespace reader {
            export interface JsonConfig {
                implicitIncludes?: boolean;
                keepRawData?: boolean;
                listeners?: object;
                messageProperty?: string;
                metaProperty?: string;
                model?: string | Ext.data.Model;
                preserveRawData?: boolean;
                readRecordsOnFailure?: boolean;
                record?: string;
                rootProperty?: string | CallableFunction;
                successProperty?: string;
                totalProperty?: string;
                transform?: string | object | CallableFunction;
                typeProperty?: string;
                useSimpleAccessors?: boolean;
            }

            export class Json extends Ext.data.reader.Reader  {
                public getMetaProperty(): void;
                public getPreserveRawData(): void;
                public getRecord(): void;
                public getUseSimpleAccessors(): void;
                public setMetaProperty(): void;
                public setPreserveRawData(): void;
                public setRecord(): void;
                public setUseSimpleAccessors(): void;
            }
        }
    }
}