NativeScript/nativescript-core/ui/activity-indicator/activity-indicator-common.ts

import { ActivityIndicator as ActivityIndicatorDefinition } from ".";
import { View, Property, booleanConverter, CSSType } from "../core/view";

@CSSType("ActivityIndicator")
export class ActivityIndicatorBase extends View implements ActivityIndicatorDefinition {
    public busy: boolean;
}

ActivityIndicatorBase.prototype.recycleNativeView = "auto";

export const busyProperty = new Property<ActivityIndicatorBase, boolean>({ name: "busy", defaultValue: false, valueConverter: booleanConverter });
busyProperty.register(ActivityIndicatorBase);