font-awesome/fonts";
@import "../node_modules/font-awesome/scss/font-awesome.scss";
3 : Your global.scss file should look something like this after that:
// http://ionicframework.com/docs/theming/"
$fa-font-path : "../node_modules/font-awesome/fonts";
@import "../node_modules/font-awesome/scss/font-awesome.scss";
@import "~@ionic/angular/css/normalize.css";
@import "~@ionic/angular/css/structure.css";
@import "~@ionic/angular/css/typography.css";
@import "~@ionic/angular/css/colors.css";
@import "~@ionic/angular/css/padding.css";
@import "~@ionic/angular/css/float-elements.css";
@import "~@ionic/angular/css/text-alignment.css";
@import "~@ionic/angular/css/text-transformation.css";
@import "~@ionic/angular/css/flex-utils.css";
Try displaying font awesome icon with this
<i primary class="fa fa-cart-plus fa-lg"></i>