fix: Reverted callable module to self-executable (#14)

.npmignore

@@ -1,5 +1,6 @@
 # Config files
 *.config.*
+.tsconfig.*
 
 # Git
 .gitignore

src/index.test.ts

@@ -1,12 +1,10 @@
-import onTheCase from './index';
-
 global.String.prototype.toCamelCase = () => 'foo';
 global.String.prototype.toKebabCase = () => 'bar';
 global.String.prototype.toPascalCase = () => 'baz';
 global.String.prototype.toSnakeCase = () => 'qui';
 global.String.prototype.toTitleCase = () => 'thud';
 
-onTheCase();
+import './index';
 
 describe('On The Case', () => {
   it('Respects pre-existing toCamelCase prop on the String object', () => {

src/index.ts

@@ -12,18 +12,14 @@ const funcs: Record<string, () => string> = {
   toTitleCase,
 };
 
-const onTheCase = (): void => {
-  Object.keys(funcs).map((func: string) => {
-    if (func in String.prototype) {
-      if (process.env.NODE_ENV !== 'test') {
-        console.error(
-          `On The Case:\n${func} could not be written to JavaScript\'s String object because a function with this name already exists.`,
-        );
-      }
-    } else {
-      String.prototype[func] = funcs[func];
+Object.keys(funcs).map((func: string) => {
+  if (func in String.prototype) {
+    if (process.env.NODE_ENV !== 'test') {
+      console.error(
+        `On The Case:\n${func} could not be written to JavaScript\'s String object because a function with this name already exists.`,
+      );
     }
-  });
-};
-
-export { onTheCase as default };
+  } else {
+    String.prototype[func] = funcs[func];
+  }
+});