---
agentTools:
  projectIndex: https://angular2-tree.readme.io/llms.txt
---

# IE11

To support IE11 you'll need to turn on some polyfills in your polyfills.ts file:

[block:code]
{
  "codes": [
    {
      "code": "/** IE9, IE10 and IE11 requires all of the following polyfills. **/\n// import 'core-js/es6/symbol';\nimport 'core-js/es6/object';\n// import 'core-js/es6/function';\n// import 'core-js/es6/parse-int';\n// import 'core-js/es6/parse-float';\n// import 'core-js/es6/number';\n// import 'core-js/es6/math';\nimport 'core-js/es6/string';\n// import 'core-js/es6/date';\nimport 'core-js/es6/array';\n// import 'core-js/es6/regexp';\n// import 'core-js/es6/map';\n// import 'core-js/es6/weak-map';\n// import 'core-js/es6/set';\n",
      "language": "javascript",
      "name": "polyfills.ts"
    }
  ]
}
[/block]