declare namespace Ext {
    export namespace data {
        export namespace field {
            export interface FieldConfig {
                allowNull?: boolean;
                calculate?: CallableFunction;
                convert?: CallableFunction;
                critical?: boolean;
                defaultValue?: object;
                depends?: string | string[];
                mapping?: string | number | CallableFunction;
                name?: string;
                persist?: boolean;
                reference?: string | object;
                serialize?: CallableFunction;
                sortType?: string | CallableFunction;
                unique?: boolean;
                validators?: object[];
            }

            export class Field extends Ext.Base  {
                public calculated?: boolean;
                public defaultInvalidMessage?: string;
                public definedBy?: Ext.Class;
                public identifier?: boolean;
                public ordinal?: number;
                public stripRe?: RegExp;
                public collate(value1?: object, value2?: object): number;
                public compare(value1?: object, value2?: object): number;
                public convert(value?: any, record?: Ext.data.Model): any;
                public getAllowBlank(): void;
                public getAllowNull(): void;
                public getConvert(): void;
                public getDefaultValue(): void;
                public getDepends(): void;
                public getMapping(): void;
                public getPersist(): void;
                public getSortDir(): string;
                public getSortType(): void;
                public getType(): string;
                public hasMapping(): boolean;
                public isEqual(value1?: object, value2?: object): boolean;
                public serialize(value?: any, record?: Ext.data.Model): string;
                public validate(value?: object, separator?: string, errors?: Ext.data.ErrorCollection, record?: Ext.data.Model): boolean | string;
            }
        }
    }
}