diff --git a/index.ts b/index.ts
deleted file mode 100644
index 69ce92ac081f182b5123409021e1b1028255c7f3..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/index.ts
+++ /dev/null
@@ -1,62 +0,0 @@
-export class Semaphore {
-    private tasks: (() => void)[] = [];
-    count: number;
-
-    constructor(count: number) {
-        this.count = count;
-    }
-
-    private sched() {
-        if (this.count > 0 && this.tasks.length > 0) {
-            this.count--;
-            let next = this.tasks.shift();
-            if (next === undefined) {
-                throw "Unexpected undefined value in tasks list";
-            }
-
-            next();
-        }
-    }
-
-    public acquire() {
-        return new Promise<() => void>((res, rej) => {
-            var task = () => {
-                var released = false;
-                res(() => {
-                    if (!released) {
-                        released = true;
-                        this.count++;
-                        this.sched();
-                    }
-                });
-            };
-            this.tasks.push(task);
-            if (process && process.nextTick) {
-                process.nextTick(this.sched.bind(this));
-            } else {
-                setImmediate(this.sched.bind(this));
-            }
-        });
-    }
-
-    public use<T>(f: () => Promise<T>) {
-        return this.acquire()
-        .then(release => {
-            return f()
-            .then((res) => {
-                release();
-                return res;
-            })
-            .catch((err) => {
-                release();
-                throw err;
-            });
-        });
-    }
-}
-
-export class Mutex extends Semaphore {
-    constructor() {
-        super(1);
-    }
-}