Add --version support

Author: gpotter2

src/cli.ts

@@ -15,6 +15,7 @@ import utils = require('./lib/utils');
     var program = require('commander');
     program
         .name('lambda-local')
+        .version(lambdaLocal.version)
         .option('-l, --lambda-path <lambda index path>', '(required) Lambda function file name.')
         .option('-e, --event-path <path>', '(required) Event data file name.')
         .option('-h, --handler <handler name>',

src/lambdalocal.ts

@@ -14,6 +14,11 @@ import { createServer, IncomingMessage, ServerResponse } from 'http';
 import utils = require('./lib/utils.js');
 import Context = require('./lib/context.js');
 
+/*
+ * Lambda local version
+ */
+export const version = "1.7.3";
+
 var logger = utils.getWinstonConsole();
 
 export function setLogger(_logger){

test/test.js

@@ -560,4 +560,14 @@ describe("- Testing cli.js", function () {
             assert.equal((r.output.indexOf("Timeout finished !") !== -1), true)
         });
     });
+    describe("* Test --version", function() {
+      var lambdalocal = require(lambdalocal_path);
+      it("should match the current latest version", function() {
+          var command = get_shell("node ../build/cli.js --version");
+          var r = spawnSync(command[0], command[1]);
+          process_outputs(r);
+          assert.equal(r.status, 0);
+          assert.equal(r.output.trim(), lambdalocal.version);
+      });
+    });
 });