Fix according to Deno 1.4

mod.ts

@@ -1,7 +1,7 @@
 import * as baloon from "./src/balloon.ts";
 import * as cows from "./src/cows.ts";
 import { faces } from "./src/faces.ts";
-import { IOptions } from "./src/models/IOptions.ts";
+import type { IOptions } from "./src/models/IOptions.ts";
 
 export const say = (options: IOptions): string => {
   return doIt(options, true);

src/cows.ts

@@ -1,6 +1,6 @@
 import replacer from "./replacer.ts";
 import * as cows from "./cows/cows.ts";
-import { IOptions } from "./models/IOptions.ts";
+import type { IOptions } from "./models/IOptions.ts";
 
 export const get = (cow: string) => {
   const text = (cows as Record<string, string>)[cow];

src/faces.ts

@@ -1,4 +1,4 @@
-import { IOptions } from "./models/IOptions.ts";
+import type { IOptions } from "./models/IOptions.ts";
 
 const modes = [
   {