I created an angular project from "single-spa" as the library and I implemented angular material inside the project. I used mat-icon but it doesn’t work. it doesn't show anything. And also I use a design kit and I took some components there but again icon doesn't show in the used component. Icon display like this -> 
Who can help me?
Thanks in advance.
According to document, mat-icon require the icon font to be import in the HTML. To import the font icon, you may refers to https://google.github.io/material-design-icons/#icon-font-for-the-web