<commit_before>import {Filter, IFilter} from "@tsed/common";
import {getValue} from "@tsed/core";

/**
 * @private
 * @filter
 */
@Filter()
export class MultipartFilesFilter implements IFilter {
  transform(expression: string, request: any, response: any) {
    if (expression) {
      return getValue(expression, request["files"]);
    }

    return request["files"];
  }
}<commit_msg>fix(multipartfile): fix problem when files is empty<commit_after>import {Filter, IFilter} from "@tsed/common";
import {getValue} from "@tsed/core";

/**
 * @private
 * @filter
 */
@Filter()
export class MultipartFilesFilter implements IFilter {
  transform(expression: string, request: any, response: any) {
    if (expression) {
      return request["files"] && getValue(expression, request["files"]);
    }

    return request["files"];
  }
}
{'fraction_non_alphanumeric': 0.15060240963855423, 'fraction_numerical': 0.0, 'mean_word_length': 4.577181208053691, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1217163', 'n_tokens_mistral': 247, 'n_tokens_neox': 243, 'n_words': 67}