사용자 폼 유효성 검사에서 에러

안녕하세요.

https://stackoverflow.com/questions/46155/how-to-validate-an-email-address-in-javascript

위의 링크의 정규표현식을 긁어서 붙이면 아래와 같이 에러가 뜹니다.

 ERROR  Failed to compile with 1 errors                                             9:02:31 PM

 error  in ./src/utils/validation.js

Module Error (from ./node_modules/eslint-loader/index.js):

error: Unnecessary escape character: \[ (no-useless-escape) at src/utils/validation.js:2:22:

  1 | function validateEmail(email) {

> 2 |   var re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}

\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

    |                      ^

  3 |   return re.test(String(email).toLowerCase());

  4 | }

  5 | 

error: Unnecessary escape character: \[ (no-useless-escape) at src/utils/validation.js:2:47:

  1 | function validateEmail(email) {

> 2 |   var re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}

\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

    |                                               ^

  3 |   return re.test(String(email).toLowerCase());

  4 | }

  5 | 

2 errors found.

 @ ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/LoginForm.vue?vue&type=script&lang=js& 19:0-51 30:13-26

 @ ./src/components/LoginForm.vue?vue&type=script&lang=js&

 @ ./src/components/LoginForm.vue

 @ ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/views/LoginPage.vue?vue&type=script&lang=js&

 @ ./src/views/LoginPage.vue?vue&type=script&lang=js&

 @ ./src/views/LoginPage.vue

 @ ./src/routes/index.js

 @ ./src/main.js

 @ multi (webpack)-dev-server/client?http://192.168.219.108:8080/sockjs-node (webpack)/hot/dev-server.js ./src/main.js