Some js methods not supported on IE 11

[teepobharu]

Problem

• It seems like support for IE 11 does not work on some function such as
  [].includes() , "strsd".includes()
• only fetch works in this case

How to solve this problem and are their workarounds ?
Thanks 👍

Code

packge.json

{
  "name": "testproject",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "eslint": "^7.17.0",
    "eslint-plugin-compat": "^3.9.0"
  }
}

test.js

// IE 11 No Support

Array.includes();

Array.from(Set(1,2,3));

[3,2,1].includes(1);

"asdasd".includes("a");

fetch('asdasd');

.eslintrc.js

module.exports = {
    "env": {
        "browser": true,
        "es2020": true
    },
    "settings": {
        targets: [
            "ie >= 11"
        ],
        polyfills: [],
    },
    "extends": [ ],
    "plugins": [ "compat" ],
    "rules": {
        "compat/compat": "error"
    }
};

[TomPradat]

Object.assign is not detected either. Any news about this ?

[kaysonwu]

I have the same issue.

[HansBrende]

@teepobharu @TomPradat

Half of this issue can be solved by applying #507: just add "lintAllEsApis": true to your settings. Fixes:

new Array().includes()  // errors with: ESLint: Array.includes() is not supported in IE 11(compat/compat)
new String().includes()  // errors with: ESLint: String.includes() is not supported in IE 11(compat/compat)
Array.from()  // errors with: ESLint: Array.from() is not supported in IE 11(compat/compat)
Object.assign()  // errors with: ESLint: Object.assign() is not supported in IE 11(compat/compat)

The other half of this issue (calling methods from literals) still appears to be broken:

"abc".includes()  // false negative
[].includes() // false negative

[HansBrende]

@teepobharu given my above ^ comment I would suggest renaming this issue to "String and array literals not supported".