Split code into modules and add gulpfile

src/sony.ts

@@ -0,0 +1,22 @@
+import { makeSolver } from "./utils";
+/* Return password for old sony laptops
+ * password 7 digit number like 1234567
+ */
+function sonyKeygen(serial: string): string {
+    const table = "0987654321876543210976543210982109876543109876543221098765436543210987";
+    let code: string = "";
+    for (let i = 0; i < serial.length; i++) {
+        code += table.charAt(parseInt(serial.charAt(i), 10) + 10 * i);
+    }
+    return code;
+}
+
+export let sonySolver = makeSolver({
+    name: "Sony",
+    examples: ["1234567"],
+    inputValidator: (s) => /^\d{7}$/i.test(s),
+    fun: (code: string) => {
+        let res = sonyKeygen(code);
+        return res ? [res] : [];
+    }
+});