error '_' is not defined no-undef

问题

I use eslint to check my code ,and a error happen -- "error '_' is not defined no-undef".

I write the code like this:

new webpack.ProvidePlugin({
    $: "jquery",//jquery
    jQuery: "jquery",
    "window.jQuery": "jquery",
    _:"lodash"//lodash
})

and get .eslintrc.js, part of it like this:

"env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "jquery":true,
},

before I add the jquery into ,it happen an error -- "error '_' is not defined no-undef". However, when I add lodash into ,just like that "'lodash':true".It doesn't work.

Can you help me?

回答1:

ESLint doesn't understand lodash library. you need to add a global section in your config.

"globals": { "_": true },

来源：https://stackoverflow.com/questions/45317154/error-is-not-defined-no-undef