Pipe para validar RUT en NestJS

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import { BadRequestException, PipeTransform } from "@nestjs/common";
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export class isRutValid implements PipeTransform {
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  async transform(value: any) {
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    if (!value) {
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      throw new BadRequestException("RUT is required");
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    }
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    if (!value.match(/^[0-9]+[-]{1}[0-9kK]{1}$/)) {
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      throw new BadRequestException(
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        "RUT have invalid format, must be 12345678-9",
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      );
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    }
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    return value;
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  }
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}

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import { Controller, Get, Header, Query } from "@nestjs/common";
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import { isRutValid } from "./rut.pipe";
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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("rut", isRutValid)
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    rut: string,
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  ): any {
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    return rut;
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  }
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}