/**
 * Functions and types to parse XML schema definitions (ie. .xsd files).
 * @module
 */
import type { SaveData } from '../type';
/**
 * A simple datatype in an XML schema.
 */
export type SimpleType = {
    /** Name of the simple type. */
    name: string;
    /** Documentation of the simple type. Extracted from comments or annotations. */
    doc?: string;
    /** Regex to validate the type. */
    pattern?: string;
    /** Options if type is an enum. */
    options?: string[];
};
/**
 * An attribute of a complex type in an XML schema.
 */
export type Attribute = {
    /** Name of the attribute. */
    name: string;
    /** Default value of the attribute. */
    default: unknown;
    /** Documentation of the attribute. Extracted from comment or annotation. */
    doc?: string;
    /** Data type of the attribute. */
    type: string;
    /** Is the attribute required. */
    required: boolean;
};
export declare class ChildProps {
    type: string;
    minOccurs?: number;
    maxOccurs?: number;
    constructor(params: {
        type: string;
        minOccurs?: number;
        maxOccurs?: number;
    });
    get unique(): boolean;
    get required(): boolean;
    static fromObject(obj: SaveData<ChildProps>): ChildProps;
    toJSON(): {
        type: string;
        minOccurs: number | undefined;
        maxOccurs: number | undefined;
    };
}
/** A complex type in an XML schema definition.
 */
export declare class ComplexType {
    /** Name of the complex type. */
    name: string;
    /** Documentation of the complex type. */
    doc?: string;
    /** Attributes of the complex type. */
    get attrs(): Attribute[];
    attributes: Map<string, Attribute>;
    children: ChildProps[];
    constructor(params: {
        name: string;
        attributes?: Attribute[];
        doc?: string;
        children?: ChildProps[];
    });
    get childTypes(): string[];
    get optionalChildren(): ChildProps[];
    get optionalChildTypes(): string[];
    get requiredChildren(): ChildProps[];
    get uniqueChildren(): ChildProps[];
    toJSON(): {
        name: string;
        doc: string | undefined;
        attributes: Attribute[];
        children: {
            type: string;
            minOccurs: number | undefined;
            maxOccurs: number | undefined;
        }[];
    };
    static fromObject({ name, attributes, children, doc }: SaveData<ComplexType>): ComplexType;
}
/**
 * A tree view of an XML schema.
 *
 * It is a recursive structure that represents the hierarchy of types in a schema.
 */
export type XMLTypeTree = {
    [key: string]: XMLTypeTree | 'recursive';
};
/** Type alias to make code more explicit. */
export type XMLTypeName = string;
/**
 * Type of an XML schema definition.
 *
 * It defines the types allowed in an xml file, usually derived from an xsd file.
 */
export declare class XmlSchema {
    static fromJSON(data: SaveData<XmlSchema>): XmlSchema;
    toJSON(): {
        simpleTypes: SimpleType[];
        complexTypes: {
            name: string;
            doc: string | undefined;
            attributes: Attribute[];
            children: {
                type: string;
                minOccurs: number | undefined;
                maxOccurs: number | undefined;
            }[];
        }[];
    };
    /** Simple types of the xml schema. */
    simpleTypes: Map<string, SimpleType>;
    /** Complex types of the xml schema. */
    complexTypes: Map<string, ComplexType>;
    /** Map which associates the names of simple XML types to their definition. */
    get simpleTypeMap(): Map<XMLTypeName, SimpleType>;
    /** Map which associates the names of complex XML types to their definitions. */
    get typeMap(): Map<XMLTypeName, ComplexType>;
    addComplexType(...complexs: ComplexType[]): void;
    addSimpleType(...simples: SimpleType[]): void;
    /** Map which associates the names of complex XML types to their parents' names. */
    get parentsMap(): Map<XMLTypeName, XMLTypeName[]>;
    /** Roots of the XML schema. */
    get roots(): string[];
    /**
     * Tree representation of the XML schema.
     *
     * It is a recursive structure that represents the hierarchy of the types in the schema.
     */
    get tree(): XMLTypeTree;
    /**
     * Map which associates the names of complex XML types to their possible paths in an XML file.
     *
     * The paths are represented as an array of type names.
     * If a type is recursive, the value is 'infinite'.
     */
    get typePaths(): Map<XMLTypeName, XMLTypeName[][] | 'infinite'>;
}
/**
 * Parses an XML schema from an XSD string.
 * @param xsd - xsd string
 * @returns XMLSchema, or undefined if the string could not be parsed
 */
export declare function parseXsd(xsd: string): Promise<XmlSchema | undefined>;
/**
 * Parses an XML schema from the url of an XSD file.
 * @param url - url of the xsd file
 * @returns XMLSchema, or undefined if the file could not be fetched or parsed
 */
export declare function parseXsdFromUrl(url: string): Promise<XmlSchema | undefined>;