routie dev init since i didn't adhere to any proper guidance up until now

frontend/node_modules/sync-message-port/dist/lib/atomic_counter.d.ts

@@ -0,0 +1,35 @@
+/**
+ * A counter that can be atomically incremented and decremented, and which
+ * callers can synchronously listen for it becoming non-zero.
+ *
+ * This can be "open" or "closed"; once it's closed, {@link wait} will no longer
+ * emit useful events.
+ */
+export declare class AtomicCounter {
+    /**
+     * The underlying BigInt64Array.
+     *
+     * The first BigInt64 represents the current value of the counter. The second
+     * BigInt64 is used to track the closed state.
+     */
+    private readonly buffer;
+    constructor(buffer: SharedArrayBuffer);
+    /** Atomically decrement the current value by one. */
+    decrement(): void;
+    /** Atomically increment the current value by one. */
+    increment(): void;
+    /**
+     * Closes the counter.
+     *
+     * This will cause any outstanding calls to {@link wait} on any thread to
+     * return `true` immediately.
+     */
+    close(): void;
+    /**
+     * Waits until the current value is not zero or the counter is closed.
+     *
+     * Returns `true` when the counter is non-zero *or* when it's closed. Returns
+     * `false` if the counter remains zero for `timeout` milliseconds.
+     */
+    wait(timeout?: number): boolean;
+}