Can't drag mat-slider - when Ivy enabled

[theunreal]

Reproduction

Any angular project with mat-slider and Ivy enabled

"angularCompilerOptions": {
    "enableIvy": false
  }

Steps to reproduce:

1. Using mat-slider:

<mat-slider></mat-slider>

Enable ivy in tsconfig.app.json:

"angularCompilerOptions": {
    "enableIvy": false
  },

Expected Behavior

mat slider should be dragged using the cursor

Actual Behavior

Using the cursor to drag the mat-slider is not working when Ivy is enabled.

Environment

• Angular: 9.0.0-next.8
• CDK/Material:8.2.3
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Windows

[crisbeto]

You probably need to import HammerModule. Pre-Ivy it used to be imported by Angular, but it's not anymore. You can also update to the latest Material which doesn't use Hammer for the slider at all.

[jelbourn]

Closing this since it's almost certainly due to missing HammerModule. Angular Material will also drop its dependency on HammerJS in v9.

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