Javascript eslint：错误解析错误：关键字'const'被保留
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eslint: error Parsing error: The keyword 'const' is reserved
提问by opike
I am getting this error from ESLint:
我从 ESLint 收到此错误：
error Parsing error: The keyword 'const' is reserved
from this code:
从这个代码：
const express = require('express');
const app = express();
const _ = require('underscore');
I've tried removing node_modulesand reinstalling all npm packages (as suggested here), but to no avail.
我试过删除node_modules并重新安装所有 npm 包（如建议here），但无济于事。
回答by iamjpg
ESLint defaults to ES5 syntax-checking. You'll want to override to the latest well-supported version of JavaScript.
ESLint 默认使用 ES5 语法检查。您需要覆盖到最新的受良好支持的 JavaScript 版本。
Try adding a .eslintrcfile to your project. Inside it:
尝试将.eslintrc文件添加到您的项目。在里面：
{
"parserOptions": {
"ecmaVersion": 2017
},
"env": {
"es6": true
}
}
Hopefully this helps.
希望这会有所帮助。
EDIT: I also found this example .eslintrcwhich might help.
编辑：我还发现了这个.eslintrc可能有帮助的例子。
回答by Khachornchit Songsaen
I used .eslintrc.js and I have added following code.
我使用了 .eslintrc.js 并添加了以下代码。
module.exports = {
"parserOptions": {
"ecmaVersion": 6
}
};
回答by yousef
you also can add this inline instead of config, just add it to the same file before you add your own disable stuff
您也可以添加此内联而不是配置，只需在添加自己的禁用内容之前将其添加到同一个文件中
/* eslint-env es6 */
/* eslint-disable no-console */
my case was disable a file and eslint-disable were not working for me alone
我的情况是禁用文件并且 eslint-disable 不能单独为我工作
/* eslint-env es6 */
/* eslint-disable */
回答by Marcos Sevilla
I had this same problem with this part of my code:
我的这部分代码有同样的问题：
const newComment = {
dishId: dishId,
rating: rating,
author: author,
comment: comment
};
newComment.date = new Date().toISOString();
Same error, const is a reserved word.
同样的错误，const 是一个保留字。
The thing is, I made the .eslintrc.js from the link you gave in the update and still got the same error. Also, I get an parsing error in the .eslintrc.js: Unexpected token ':'.
问题是，我从您在更新中提供的链接制作了 .eslintrc.js，但仍然出现相同的错误。另外，我在.eslintrc.js: 中遇到解析错误Unexpected token ':'。
Right in this part:
就在这部分：
"env": {
"browser": true,
"node": true,
"es6": true
},
...
回答by Bj?rnar Hvidsten
If using Visual Code one option is to add this to the settings.json file:
如果使用 Visual Code，一种选择是将其添加到 settings.json 文件中：
"eslint.options": {
"useEslintrc": false,
"parserOptions": {
"ecmaVersion": 2017
},
"env": {
"es6": true
}
}
回答by fuddin
In my case, it was unable to find the .eslintrcfile so I copied from node_modules/.bin to root.
就我而言，它无法找到该.eslintrc文件，所以我从 node_modules/.bin 复制到 root。
