ESLint plugin for detecting unsupported ES6 features in IE11

You'll first need to install ESLint:

$ npm i eslint --save-dev

Next, install eslint-plugin-ie11:

$ npm install eslint-plugin-ie11 --save-dev

Note: If you installed ESLint globally (using the -g flag) then you must also install eslint-plugin-ie11 globally.

Add ie11 to the plugins section of your .eslintrc configuration file. You can omit the eslint-plugin- prefix:

{
    "plugins": [
        "ie11"
    ]
}

Then configure the rules you want to use under the rules section.

{
    "rules": {
				"ie11/no-collection-args": [ "error" ],
				"ie11/no-for-in-const": [ "error" ],
				"ie11/no-loop-func": [ "warn" ],
				"ie11/no-weak-collections": [ "error" ]
    }
}

• no-collection-args: Map and Set constructors does not accept arguments.
• no-for-in-const: Do not use const in for-in.
• no-loop-func: So not create functions inside loops.
• no-weak-collections: Do not use Weak collections