add attach/renderButton to instance

types/lib/amazon-pay.d.ts

@@ -7,28 +7,42 @@ export type AmazonPayOptions = {
   region: string;
 
   /**
-   * The customer's locale. This is used to set the language rendered in the UI.
+   * Specify which Payment Gateway in Recurly must handle the payment.
    */
-  locale: string;
+  gatewayCode?: string
 
   /**
-   * The currency of the payment.
+   * Sets button to Sandbox environment
    */
-  currency: string;
+  sandbox?: boolean;
 
-  /**
-   * Specify which Payment Gateway in Recurly must handle the payment.
-   */
-  gatewayCode?: string
+  merchantId?: string;
+};
+
+export type AmazonPayRenderButtonOptions = {
+  productType?: string;
+  placement?: string;
+  buttonColor?: string;
 };
 
-export type AmazonPayEvent = 'token' | 'error' | 'close';
+export type AmazonPayEvent = 'ready' | 'token' | 'error' | 'close' | 'done';
 
 export interface AmazonPayInstance extends Emitter<AmazonPayEvent> {
   /**
    * Invokes the Amazon Payment Modal
    */
   start: (amazonPayOptions: AmazonPayOptions) => void;
+
+  /**
+   * Attaches an Element to the DOM, as a child of the specified parent target.
+   *
+   */
+  attach: (defaultEventName: string, gatewayCode?: string) => AmazonPayInstance;
+
+  /**
+   * Renders Amazon Pay button to the page
+   */
+  renderButton: (element: string | HTMLElement, amazonPayRenderButtonOptions: AmazonPayOptions & AmazonPayRenderButtonOptions) => AmazonPayInstance;
 }
 
 export type AmazonPay = (amazonPayOptions?: AmazonPayOptions) => AmazonPayInstance;