[javascript] ReferenceError : 페치가 정의되지 않았습니다

node.js에서 코드를 컴파일 할 때이 오류가 발생합니다. 어떻게 해결할 수 있습니까?

RefernceError : 가져 오기가 정의되지 않았습니다

이것은 내가하고있는 기능이며 특정 영화 데이터베이스에서 정보를 복구합니다.

function getMovieTitles(substr){  
  pageNumber=1;
  let url = 'https://jsonmock.hackerrank.com/api/movies/search/?Title=' + substr + "&page=" + pageNumber;
  fetch(url).then((resp) => resp.json()).then(function(data) {
    let movies = data.data;
    let totPages = data.total_pages;
    let sortArray = [];
    for(let i=0; i<movies.length;i++){
        sortArray.push(data.data[i].Title);
     }
    for(let i=2; i<=totPages; i++){
           let newPage = i;
           let url1 = 'https://jsonmock.hackerrank.com/api/movies/search/?Title=' + substr + "&page=" + newPage;

          fetch(url1).then(function(response) {
              var contentType = response.headers.get("content-type");
              if(contentType && contentType.indexOf("application/json") !== -1) {
                return response.json().then(function(json) {
                  //console.log(json); //uncomment this console.log to see the JSON data.

                 for(let i=0; i<json.data.length;i++){
                    sortArray.push(json.data[i].Title);
                 }

                 if(i==totPages)console.log(sortArray.sort());

                });
              } else {
                console.log("Oops, we haven't got JSON!");
              }
            });

        }
  })
  .catch(function(error) {
    console.log(error);
  });   
}

답변

npm i node-fetch --save

const fetch = require("node-fetch");

global.fetch = require("node-fetch");

npm install --save cross-fetch

import fetch from 'cross-fetch';
// Or just: import 'cross-fetch/polyfill';

fetch('//api.github.com/users/lquixada')
  .then(res => {
    if (res.status >= 400) {
      throw new Error("Bad response from server");
    }
    return res.json();
  })
  .then(user => {
    console.log(user);
  })
  .catch(err => {
    console.error(err);
  });

import fetch from 'cross-fetch';
// Or just: import 'cross-fetch/polyfill';

(async () => {
  try {
    const res = await fetch('//api.github.com/users/lquixada');

    if (res.status >= 400) {
      throw new Error("Bad response from server");
    }

    const user = await res.json();

    console.log(user);
  } catch (err) {
    console.error(err);
  }
})();

    "amazon-cognito-identity-js": "3.0.11"
    "node-fetch": "^2.3.0"

import Global = NodeJS.Global;
export interface GlobalWithCognitoFix extends Global {
    fetch: any
}
declare const global: GlobalWithCognitoFix;
global.fetch = require('node-fetch');

npm install --save isomorphic-fetch es6-promise

import "isomorphic-fetch"