I am using Ionic for my latest project, but I am struggling with Alert. I have created one this way: const alert = await this.alertController.create({ header: 'Ordering options', inputs: this.order.options.map(option => ({ name: option.name, type: "radio", label: option.readable, value: option.name, checked: (option.name === this.order.selected), handler: () => { this.order.selected = option.name; this.order.apply(); alert.dismiss(); }, })) Although the code works, the part of ionic lab compilation output is the following alert: [ng] ERROR in src/app/overview/order/order-mobile.component.ts(24,7): error TS2322: Type '{ name: any; type: string; label: any; value: any; checked: boolean; handler: () => void; }[]' is not assignable to type 'AlertInput[]'. [ng] Type '{ name: any; type: string; label: any; value: any; checked: boolean; handler: () => void; }' is not assignable to type 'AlertInput'. [ng] Types of property 'type' are incompatible. [ng] Type 'string' is not assignable to type '"number" | "password" | "time" | "text" | "date" | "email" | "search" | "tel" | "url" | "checkbox" | "radio"'. What's the matter? Thanks for your help. Continue reading...