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import { Key, Values, makeValues } from "../libs/types.ts";import { ErrorHandler } from "../libs/publicTypes.ts";import { ValueSchemaError } from "../libs/ValueSchemaError.ts";interface Options {}type ApplyTo<T> = (values: Values, options: Options, keyStack: Key[]) => values is Values<T>;/** * Base Schema Class */export class BaseSchema<T = unknown> {    private readonly options: Options;    private readonly applyToList: ApplyTo<T>[];    /**     * constructor     * @param options options     * @param applyToList list of applyTo     */    constructor(options: Options, applyToList: ApplyTo<T>[]) {        this.options = options;        this.applyToList = applyToList;    }    /**     * apply schema     * @param value value to apply     * @param onError error handler     * @returns applied value     */    applyTo(value: unknown, onError: ErrorHandler<T> = onErrorDefault): T {        return this._applyTo(value, onError, []);    }    private _applyTo(value: unknown, onError: ErrorHandler<T>, keyStack: Key[]): T {        try {            const values = makeValues(value);            for (const applyTo of this.applyToList) {                if (applyTo(values, this.options, keyStack)) {                    return values.output;                }            }            return values.output as T;        }        catch (err) {            return onError(err);        }    }}/** * default error handler * @param err error object */export function onErrorDefault(err: ValueSchemaError): never {    throw err;}/** * default finish handler */export function onFinishedDefault(): void {    // do nothing}