[IE-11]: errors on multiple components

[sjdemoor]

I'm submitting a ... (check one with "x")

[x ] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request => Please do not submit support request here

Current behavior

• errors on all charts when (select) is hit.
• errors on line-chart, area, stacked-area, and normalized-area charts when (activate) and (deactivate) are hit.
• several charts do not behave normally. (bubble chart displays bubbles, then they immediately go away; tree-map generates ERROR TypeError: Unable to set property 'pointer-events' of undefined or null reference errors upon initial rendering, etc...)

Expected behavior IE-11 should be supported.

Reproduction of the problem cloned this repo, and ran on Windows-10 in IE-11.

What is the motivation / use case for changing the behavior? IE-11 should be supported.

Please tell us about your environment:

Windows-10, executing npm run start in Git Bash, $ npm -v 5.5.1, $ node -v v7.7.4

• ngx-charts version: 7.0.1 { "name": "@swimlane/ngx-charts", "version": "7.0.1", "description": "Declarative Charting Framework for Angular2 and beyond!", ... }

• Angular version: 5.x

• Browser: [ IE 11 ] IE 11

• Language: [all ]

Note: the following file updates resolves many, but not all of the issues:

• demo/app.component.ts ==> tooltipDisabled = true; (resolves activate/deactivate issue on line-charts and several others, but you still cannot (select) on a data point in a series.

• package.json ==> add "classlist.js": "^1.1.20150312" to dependencies.

• src/polyfills.ts ==> add the following imports:

  import 'classlist.js';
  import 'web-animations-js';
  import 'core-js/es6/symbol';
  import 'core-js/es6/object';
  import 'core-js/es6/function';
  import 'core-js/es6/parse-int';
  import 'core-js/es6/parse-float';
  import 'core-js/es6/number';
  import 'core-js/es6/math';
  import 'core-js/es6/string';
  import 'core-js/es6/date';
  import 'core-js/es6/array';
  import 'core-js/es6/regexp';
  import 'core-js/es6/map';
  import 'core-js/es6/set';
  import 'zone.js/dist/zone'; 

[akaztp]

The error with "pointer-events" is also on #449

[jogaj]

Thank you for your report, IE is not currently supported.