refactor: show that imports aren't working well

Sadly, we can't do imports without TS screaming bloody murder in Vim:

    An import path cannot end with a '.d.ts' extension

etc

Related:

    microsoft/TypeScript#27481

We can suppress the error, but either way, the editor can't see the
types, sadly obviating one of the big upsides of using TypeScript.

lib/main.ts

@@ -1,4 +1,8 @@
 // This is only for the benefit of the LanguageClient.
+// @ts-ignore
 import type Deno from '../vendor/deno/types.d.ts';
 
-console.log(Deno.args);
+// @ts-ignore
+import test from './other.ts';
+
+test(Deno.args);

lib/other.ts

@@ -0,0 +1,3 @@
+export default function(args: Array<string>) {
+  console.log(...args);
+}

tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "include": ["src/**/*.ts", "vendor/deno/types.d.ts"]
+}