Rewrite into TypeScript

lib/types.ts

@@ -0,0 +1,33 @@
+export interface SnowflakeConfig {
+  name?: string;
+  async?: boolean;
+  epoch?: number;
+  workerId?: any,
+  processId?: number,
+  stringify?: boolean,
+  workerBits: number,
+  processBits: number,
+  incrementBits: number
+}
+
+export interface SnowflakeMutable {
+  locks: any;
+  locked: boolean;
+  increment: any;
+  lastTimestamp: number;
+}
+
+export type Snowflake = number;
+
+export interface SnowflakeWorker {
+  options:          SnowflakeConfig;
+  workerId:         number;
+  _mutable:         SnowflakeMutable;
+  processId:        number;
+  _maxIncrement:    number;
+  _lock():          void;
+  _unlock():        void;
+  generate():       Snowflake;
+  _generate():      Snowflake;
+  _generateAsync(): Snowflake;
+}