diff --git a/BuildServer/lib/builder.ts b/BuildServer/lib/builder.ts
index deae832..751612b 100644
--- a/BuildServer/lib/builder.ts
+++ b/BuildServer/lib/builder.ts
@@ -57,12 +57,12 @@ const notifyStatus = (settings: Settings, options, notifyStatusCallback) => {
     });
 };
 
-const wrapGitLoader = (skipGitLoader) => {
+const wrapGitLoader: (skipGitLoader: boolean) => typeof gitLoader = (skipGitLoader) => {
     if (!skipGitLoader) {
         return gitLoader;
     }
 
-    return (gitLoaderOptions, gitLoaderCallback) => process.nextTick(gitLoaderCallback);
+    return (_gitLoaderOptions, gitLoaderCallback) => process.nextTick(gitLoaderCallback);
 };
 
 export const build = (settings: Settings, options, buildCallback) => {
diff --git a/BuildServer/lib/git/copy.ts b/BuildServer/lib/git/copy.ts
index aca540c..9cf393d 100644
--- a/BuildServer/lib/git/copy.ts
+++ b/BuildServer/lib/git/copy.ts
@@ -39,7 +39,7 @@ const gitToFsCopier = new Copier({
             return callback(null, targetSubdir);
         });
     },
-    finalizeTargetTree: (targetSubdir, callback) => callback(),
+    finalizeTargetTree: (_targetSubdir, callback) => callback(),
     walkSourceTree: (tree) => {
         const emitter = new EventEmitter();
 
diff --git a/BuildServer/lib/index.ts b/BuildServer/lib/index.ts
index fbd7051..a16c52d 100644
--- a/BuildServer/lib/index.ts
+++ b/BuildServer/lib/index.ts
@@ -11,7 +11,6 @@ import * as express from "express";
 import { createServer } from "http";
 import * as methodOverride from "method-override";
 import * as morgan from "morgan";
-import { join } from "path";
 import * as serveFavicon from "serve-favicon";
 import * as serveStatic from "serve-static";
 
@@ -42,7 +41,7 @@ const run = (settings: Settings) => {
     app.route("/").get(routes.index);
     app.route("/github/postreceive")
         .post(routes.postreceive)
-        .get((req, res) => res.send("Only automated POST requests are allowed for postreceive route"));
+        .get((_req, res) => res.send("Only automated POST requests are allowed for postreceive route"));
 
     app.route("/manual")
         .get(routes.manual.get)
diff --git a/BuildServer/lib/mail-sender.ts b/BuildServer/lib/mail-sender.ts
index 2249d0d..05ba317 100644
--- a/BuildServer/lib/mail-sender.ts
+++ b/BuildServer/lib/mail-sender.ts
@@ -1,3 +1,7 @@
 "use strict";
 
-export const send = (message, callback) => process.nextTick(callback);
+export const send = (message, callback) => {
+    console.log("Mail sender is not implemented");
+    console.log(message.title);
+    process.nextTick(callback);
+};
diff --git a/BuildServer/lib/routes/manual.ts b/BuildServer/lib/routes/manual.ts
index 7391572..1e723bf 100644
--- a/BuildServer/lib/routes/manual.ts
+++ b/BuildServer/lib/routes/manual.ts
@@ -1,12 +1,11 @@
 "use strict";
 
 import * as express from "express";
-import * as _ from "underscore";
 
 import { build } from "../builder";
 import { getSettings } from "../settings-wrapper";
 
-export const get: express.RequestHandler = (req, res) => res.render("manual");
+export const get: express.RequestHandler = (_req, res) => res.render("manual");
 
 export const post: express.RequestHandler = (req, res) => {
     const settings = getSettings(req.app);
diff --git a/BuildServer/lib/routes/postreceive.ts b/BuildServer/lib/routes/postreceive.ts
index 3d87b13..bf743ce 100644
--- a/BuildServer/lib/routes/postreceive.ts
+++ b/BuildServer/lib/routes/postreceive.ts
@@ -66,12 +66,6 @@ const processPullRequest = (req: express.Request, res: express.Response, payload
         headRepoOptions,
         pullRequestNumber,
     };
-    const masterOptions = {
-        action,
-        baseRepoOptions,
-        headRepoOptions: baseRepoOptions,
-        pullRequestNumber,
-    };
 
     console.log(`Got pull request ${action} event, `
         + `from ${getBranchDescription(headRepoOptions)} (${headRepoOptions.rev}) to ${getBranchDescription(baseRepoOptions)}`);
diff --git a/BuildServer/lib/routes/status.ts b/BuildServer/lib/routes/status.ts
index 9cdf802..a19b438 100644
--- a/BuildServer/lib/routes/status.ts
+++ b/BuildServer/lib/routes/status.ts
@@ -1,7 +1,6 @@
 "use strict";
 
 import * as express from "express";
-import * as _ from "underscore";
 import { parse } from "url";
 
 import { getSettings } from "../settings-wrapper";
diff --git a/BuildServer/lib/status-processor.ts b/BuildServer/lib/status-processor.ts
index b490c3d..91bc24b 100644
--- a/BuildServer/lib/status-processor.ts
+++ b/BuildServer/lib/status-processor.ts
@@ -2,7 +2,6 @@
 
 import { exists, readFile } from "fs";
 import { join } from "path";
-import * as _ from "underscore";
 
 import { loadReport } from "./report-processor";
 import { Settings } from "./types";
diff --git a/BuildServer/lib/task-processor.ts b/BuildServer/lib/task-processor.ts
index 91b005f..c817ead 100644
--- a/BuildServer/lib/task-processor.ts
+++ b/BuildServer/lib/task-processor.ts
@@ -1,7 +1,5 @@
 "use strict";
 
-import * as _ from "underscore";
-
 import tasks from "./tasks";
 import { MessagesRoot, ProcessTaskContext, Settings, TaskInfo, TaskProcessor, TaskProcessorCallback, TaskProcessorCore } from "./types";
 
diff --git a/BuildServer/lib/tasks/cleanupafterdotnetbuild.ts b/BuildServer/lib/tasks/cleanupafterdotnetbuild.ts
index 79fb82d..6d93699 100644
--- a/BuildServer/lib/tasks/cleanupafterdotnetbuild.ts
+++ b/BuildServer/lib/tasks/cleanupafterdotnetbuild.ts
@@ -4,7 +4,7 @@ import * as glob from "glob";
 
 import { Task } from "../types";
 
-export default ((params, processor) => () => glob("**/obj/{Debug,Release}/*.{dll,pdb,xml}", {
+export default ((_params, processor) => () => glob("**/obj/{Debug,Release}/*.{dll,pdb,xml}", {
     cwd: processor.context.exported,
     dot: true,
 }, (err, files) => {
diff --git a/BuildServer/lib/tasks/dotnetbuilderwrapper.ts b/BuildServer/lib/tasks/dotnetbuilderwrapper.ts
index fc9763a..6d11b12 100644
--- a/BuildServer/lib/tasks/dotnetbuilderwrapper.ts
+++ b/BuildServer/lib/tasks/dotnetbuilderwrapper.ts
@@ -31,7 +31,7 @@ const wrapBuilder = (builder: ChildProcess, input: string, onExit: (code: number
             });
     });
 
-    const builderPromise = new Promise((resolve, reject) => {
+    const builderPromise = new Promise((resolve) => {
         builder.stdin.write(input);
         builder.stdin.end();
         builder.on("exit", resolve);
diff --git a/BuildServer/lib/tasks/dotnetcompile.ts b/BuildServer/lib/tasks/dotnetcompile.ts
index faac647..3461226 100644
--- a/BuildServer/lib/tasks/dotnetcompile.ts
+++ b/BuildServer/lib/tasks/dotnetcompile.ts
@@ -1,9 +1,8 @@
 "use strict";
 
 import { join } from "path";
-import * as _ from "underscore";
 
-import { Settings, Task } from "../types";
+import { Task } from "../types";
 import dotnetbuilderwrapper from "./dotnetbuilderwrapper";
 
 export default ((params, processor) => {
diff --git a/BuildServer/lib/tasks/dotnetnugetpack.ts b/BuildServer/lib/tasks/dotnetnugetpack.ts
index 05179b0..6ec0071 100644
--- a/BuildServer/lib/tasks/dotnetnugetpack.ts
+++ b/BuildServer/lib/tasks/dotnetnugetpack.ts
@@ -1,7 +1,5 @@
 "use strict";
 
-import * as _ from "underscore";
-
 import { Task } from "../types";
 import dotnetnugetprocessinternal from "./dotnetnugetprocessinternal";
 
diff --git a/BuildServer/lib/tasks/dotnetnugetpush.ts b/BuildServer/lib/tasks/dotnetnugetpush.ts
index 226c895..fb1d964 100644
--- a/BuildServer/lib/tasks/dotnetnugetpush.ts
+++ b/BuildServer/lib/tasks/dotnetnugetpush.ts
@@ -1,7 +1,5 @@
 "use strict";
 
-import * as _ from "underscore";
-
 import { Task } from "../types";
 import dotnetnugetprocessinternal from "./dotnetnugetprocessinternal";
 
diff --git a/BuildServer/lib/tasks/dotnetrewrite.ts b/BuildServer/lib/tasks/dotnetrewrite.ts
index bae6f19..3775ac3 100644
--- a/BuildServer/lib/tasks/dotnetrewrite.ts
+++ b/BuildServer/lib/tasks/dotnetrewrite.ts
@@ -5,7 +5,7 @@ import { readFile, writeFile } from "fs";
 import * as glob from "glob";
 import { join } from "path";
 
-import { Settings, Task, TaskProcessor } from "../types";
+import { Task, TaskProcessor } from "../types";
 
 const flagDoneName = "dotnetrewriterDone";
 
@@ -17,7 +17,7 @@ const processAssemblyInfo = (params, processor: TaskProcessor, appendInformation
 
         const publicKey = processor.settings.codeSigningPublicKey;
         const pattern = /InternalsVisibleTo\s*\(\s*"([\w.]+)"\s*\)/g;
-        const replacer = (match, p1) => `InternalsVisibleTo("${p1},PublicKey=${publicKey}")`;
+        const replacer = (_match, p1) => `InternalsVisibleTo("${p1},PublicKey=${publicKey}")`;
 
         return content.replace(pattern, replacer);
     };
diff --git a/BuildServer/lib/tasks/eslintbrowser.ts b/BuildServer/lib/tasks/eslintbrowser.ts
index 56612af..211ee0a 100644
--- a/BuildServer/lib/tasks/eslintbrowser.ts
+++ b/BuildServer/lib/tasks/eslintbrowser.ts
@@ -3,7 +3,7 @@
 import { CLIEngine } from "eslint";
 import { join } from "path";
 
-import { Settings, Task } from "../types";
+import { Task } from "../types";
 
 const errorSeverity = 2;
 
diff --git a/BuildServer/lib/tasks/noop.ts b/BuildServer/lib/tasks/noop.ts
index 6c5eaa1..899dd24 100644
--- a/BuildServer/lib/tasks/noop.ts
+++ b/BuildServer/lib/tasks/noop.ts
@@ -2,4 +2,4 @@
 
 import { Task } from "../types";
 
-export default ((params, processor) => processor.done()) as Task;
+export default ((_params, processor) => processor.done()) as Task;
diff --git a/BuildServer/tsconfig.json b/BuildServer/tsconfig.json
index c430d98..e445ecc 100644
--- a/BuildServer/tsconfig.json
+++ b/BuildServer/tsconfig.json
@@ -2,6 +2,13 @@
     "compilerOptions": {
         "module": "commonjs",
         "target": "es6",
+        "alwaysStrict": true,
+        "forceConsistentCasingInFileNames": true,
+        "noEmitOnError": true,
+        "noImplicitReturns": true,
+        "noImplicitThis": true,
+        "noUnusedLocals": true,
+        "noUnusedParameters": true,
         "strictNullChecks": true,
         "typeRoots": [
             "node_modules/@types"
diff --git a/BuildServer/tslint.json b/BuildServer/tslint.json
index 0af5928..b26eb18 100644
--- a/BuildServer/tslint.json
+++ b/BuildServer/tslint.json
@@ -5,6 +5,7 @@
     ],
     "rules": {
         "no-console": false,
-        "max-line-length": false
+        "max-line-length": false,
+        "variable-name": [true, "ban-keywords", "check-format", "allow-leading-underscore"]
     }
 }
\ No newline at end of file