fix: dont break transform when there is no space between function and…

… generic parameter (#305)

src/transform/preprocess.ts

@@ -189,7 +189,8 @@ export function preProcess({ sourceFile }: PreProcessInput): PreProcessOutput {
         nextToken.kind >= ts.SyntaxKind.FirstPunctuation && nextToken.kind <= ts.SyntaxKind.LastPunctuation;
 
       if (isPunctuation) {
-        code.appendLeft(nextToken.getStart(), defaultExport);
+        const addSpace = code.slice(token.getEnd(), nextToken.getStart()) != " ";
+        code.appendLeft(nextToken.getStart(), `${addSpace ? " " : ""}${defaultExport}`);
       } else {
         code.appendRight(token.getEnd(), ` ${defaultExport}`);
       }

tests/testcases/unnamed-default-export-without-space/expected.d.ts

@@ -0,0 +1,10 @@
+/**
+ * @description @TODO
+ */
+declare function export_default<T extends object>(
+  object: T,
+  initializationObject: {
+    [x in keyof T]: () => Promise<T[x]>;
+  },
+): Promise<void>;
+export { export_default as default };

tests/testcases/unnamed-default-export-without-space/index.d.ts

@@ -0,0 +1,9 @@
+/**
+ * @description @TODO
+ */
+export default function<T extends object>(
+  object: T,
+  initializationObject: {
+    [x in keyof T]: () => Promise<T[x]>;
+  },
+): Promise<void>;