fix type changes on deflate function

.gitignore

@@ -1,2 +1,3 @@
 .vscode/
-test*.zip
+test*.zip
+.gitconfig

_test.ts

@@ -19,7 +19,7 @@ await test.push(new TextEncoder().encode('Hello World'), 'hello.txt');
 await test.close();
 
 // edit file
-const {insert, remove, entries, close} = await open_zip('test copy.zip');
+const {insert, remove, entries, close} = await open_zip('test.zip');
 console.log(entries());
 await insert(await Deno.open('icon.png'),'icon3.png');
 console.log(entries());

lib/deflate.ts

@@ -1,9 +1,12 @@
 import { deflateRaw, inflateRaw } from 'https://esm.sh/pako';
 
 export function deflate(data:Uint8Array) {
-    return deflateRaw(data)
+    return deflateRaw(data) || new Uint8Array();
 }
 
 export function inflate(data:Uint8Array) {
-    return inflateRaw(data);
+    const output = inflateRaw(data);
+    if (!output) return new Uint8Array();
+    if (typeof output === 'string') return new TextEncoder().encode(output);
+    else return output;
 }