Validator para validar RUT en NestJS

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import {
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  ValidationOptions,
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  ValidatorConstraint,
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  ValidatorConstraintInterface,
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  registerDecorator,
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} from "class-validator";
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@ValidatorConstraint({ name: "RutValidator", async: false })
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class RutValidator implements ValidatorConstraintInterface {
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  validate(value: string): boolean {
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    if (!value || !value.match(/^[0-9]+[-]{1}[0-9kK]{1}$/)) {
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      return false;
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    }
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    return true;
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  }
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  defaultMessage(): string {
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    return `$property must be a valid RUT (e.g. 12345678-9)`;
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  }
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}
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export function IsRut(validationOptions?: ValidationOptions) {
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  return (object: unknown, propertyName: string) => {
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    registerDecorator({
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      name: "isRut",
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      target: object.constructor,
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      propertyName: propertyName,
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      options: validationOptions,
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      validator: RutValidator,
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    });
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  };
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}

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import { IsRut } from "./rut.validator";
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import { Controller, Get, Header, Query } from "@nestjs/common";
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import { Validate } from "class-validator";
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export class TestRequestDto {
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  @IsRut()
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  clientCode: string;
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}
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@Controller()
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export class TestController {
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  @Get("test-rut")
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  @Header("content-type", "application/json")
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  testRut(
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    @Query()
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    rut: TestRequestDto,
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  ): any {
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    return rut;
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  }
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}