Add bin to debug personnummer

bin/personnummer

@@ -0,0 +1,29 @@
+#!/usr/bin/env node
+
+const fs = require("fs");
+const Personnummer = fs.existsSync(`${__dirname}/../dist/cjs/index.js`)
+  ? require(`${__dirname}/../dist/cjs/index.js`)
+  : require(`${__dirname}/../src/index.ts`);
+
+const main = () => {
+  const argv = process.argv.slice(2);
+  if (argv.length < 1) {
+    console.log("Usage: npx personnummer <personnummer>");
+    return;
+  }
+
+  try {
+    const pnr = Personnummer.parse(argv[0]);
+    console.log(`       Short format: ${pnr.format()}
+        Long format: ${pnr.format(true)}
+                Age: ${pnr.getAge()}
+                Sex: ${pnr.isMale() ? "male" : "female"}
+Coordination number: ${pnr.isCoordinationNumber()}
+     Interim number: ${pnr.isInterimNumber()}`);
+  } catch (err) {
+    console.log(err);
+    console.log("Invalid personal identity number provided");
+  }
+};
+
+main();

package.json

@@ -13,6 +13,9 @@
     "type": "git",
     "url": "git://github.com/personnummer/js.git"
   },
+  "bin": {
+    "personnummer": "bin/personnummer"
+  },
   "files": [
     "dist/**/*"
   ],