feat: add type definition

Author: micaiah-effiong

index.d.ts

@@ -0,0 +1,23 @@
+type VinRawInfo = {
+  madeIn: string;
+  manufacturer: string;
+  details: string;
+  securityCode: string;
+  year: string;
+  assemblyPlant: string;
+  serialNumber: string;
+};
+
+type VinDecodedCarInfo = {
+  country: string;
+  serialNumber: string;
+  manufacturer: string;
+  modelYear: Array<string>;
+};
+
+declare module "vin-decoder" {
+  export function validate(vin: string, checksumParam?: string): boolean;
+
+  export function split(vin: string): VinRawInfo;
+  export function decode(): VinDecodedCarInfo;
+}

tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "es2016",
+    "module": "commonjs",
+    "allowJs": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "noEmit": true
+  },
+  "exclude": ["test", "node_modules"]
+}