diff --git a/.gitignore b/.gitignore
index 2a09fea..f3c5acb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ node_modules
 *.swp
 config.json
 README.html
+/server-build/
diff --git a/Gruntfile.js b/Gruntfile.js
index 9b81afb..560d9f6 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -115,7 +115,7 @@ module.exports = function (grunt) {
                 '<%= yeoman.app %>/scripts/{,**/}*.js',
                 'shared/{,**/}*.js',
                 'server/{,**/}*.js',
-                '!server/templates/{,**/}*.js'
+                '!server/templates/{,**/}*.template'
             ]
         },
 
@@ -356,10 +356,11 @@ module.exports = function (grunt) {
                     },
                     {
                         expand: true,
-                        cwd: 'server',
+                        cwd: 'server-build',
                         dest: '<%= yeoman.dist %>/server',
                         src: [
                             '{,**/}*.html',
+                            '{,**/}*.template',
                             '{,**/}*.js',
                             '{,**/}*.sql',
                             '{,**/}*.txt'
diff --git a/README.md b/README.md
index a2cbe9a..baacafb 100644
--- a/README.md
+++ b/README.md
@@ -333,7 +333,7 @@ fastd-Key und die MAC-Adresse angeben.
 
 ### Build
 
-`grunt clean build`
+`npm run clean && npm run build`
 
 Der Output landet dann unter `dist/`.
 
@@ -341,14 +341,14 @@ Der Output landet dann unter `dist/`.
 ### Server starten
 
 1. Zunächst eine `config.json` anlegen wie oben unter "Installation / Konfiguration" beschrieben.
-2. `node server/main.js -c config.json`
+2. `npm run server:run -- -c config.json`
 
 Der Server ist dann erreichbar unter [http://localhost:8080](http://localhost:8080).
 
 
 ### Life-Reload vom Client
 
-`grunt serve`
+`npm client:serve`
 
 Der Client ist dann erreichbar via [http://localhost:9000](http://localhost:9000), erwartet aber, dass der Server für
 die REST-API auch läuft (s. o.) und auf Port `8080` erreichbar ist.
diff --git a/REFACTOR.md b/REFACTOR.md
index 1ee47ec..0b0f2a6 100644
--- a/REFACTOR.md
+++ b/REFACTOR.md
@@ -3,6 +3,7 @@
 ## Short term
 
 * Integrate typescript in the build and start migrating the server code.
+* Find a nice way to integrate typescript with grunt.
 
 ## Mid term
 
diff --git a/package-lock.json b/package-lock.json
index acdfb62..fc8eed2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9070,6 +9070,12 @@
                 "mime-types": "~2.1.24"
             }
         },
+        "typescript": {
+            "version": "3.8.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+            "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+            "dev": true
+        },
         "typical": {
             "version": "4.0.0",
             "resolved": "https://registry.npmjs.org/typical/-/typical-4.0.0.tgz",
diff --git a/package.json b/package.json
index f9c0a3d..a6f54f0 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,13 @@
     "bin": {
         "ffffng": "server/main.js"
     },
+    "scripts": {
+        "build": "npm run server:build && grunt build",
+        "clean": "rm -rf server-build/ && grunt clean",
+        "client:serve": "grunt serve",
+        "server:build": "tsc -b server && ln -sfv ../server/db/patches ./server-build/db/ && ln -sfv ../server/templates ./server-build/",
+        "server:run": "npm run server:build && node server-build/main.js"
+    },
     "dependencies": {
         "async": "^3.1.0",
         "body-parser": "^1.19.0",
@@ -73,7 +80,8 @@
         "imagemin-gifsicle": "^6.0.1",
         "jshint-stylish": "^2.2.1",
         "load-grunt-tasks": "^5.1.0",
-        "time-grunt": "^2.0.0"
+        "time-grunt": "^2.0.0",
+        "typescript": "^3.8.3"
     },
     "engines": {
         "node": ">=10.0.0"
diff --git a/publish.sh b/publish.sh
index a625456..a5cce38 100755
--- a/publish.sh
+++ b/publish.sh
@@ -41,7 +41,8 @@ fi
 echo
 
 if confirm "Continue publishing?"; then
-    ./node_modules/.bin/grunt clean build
+    npm run clean
+    npm run build
 
     cd dist
     npm publish
diff --git a/server/app.js b/server/app.js
index 12b32a6..f15c4ef 100644
--- a/server/app.js
+++ b/server/app.js
@@ -43,7 +43,7 @@ module.exports = (() => {
     router.use(compress());
 
     function serveTemplate (mimeType, req, res, next) {
-        return fs.readFile(templateDir + '/' + req.path, 'utf8', function (err, body) {
+        return fs.readFile(templateDir + '/' + req.path + '.template', 'utf8', function (err, body) {
             if (err) {
                 return next(err);
             }
diff --git a/server/resources/mailResource.js b/server/resources/mailResource.js
index 5645bdc..bdde844 100644
--- a/server/resources/mailResource.js
+++ b/server/resources/mailResource.js
@@ -1,6 +1,6 @@
 'use strict';
 
-const Constraints = require('../../shared/validation/constraints')
+const Constraints = require('../validation/constraints')
 const ErrorTypes = require('../utils/errorTypes')
 const Logger = require('../logger')
 const MailService = require('../services/mailService')
diff --git a/server/resources/monitoringResource.js b/server/resources/monitoringResource.js
index 976dc7f..725d6ce 100644
--- a/server/resources/monitoringResource.js
+++ b/server/resources/monitoringResource.js
@@ -2,7 +2,7 @@
 
 const _ = require('lodash')
 
-const Constraints = require('../../shared/validation/constraints')
+const Constraints = require('../validation/constraints')
 const ErrorTypes = require('../utils/errorTypes')
 const Logger = require('../logger')
 const MonitoringService = require('../services/monitoringService')
diff --git a/server/resources/nodeResource.js b/server/resources/nodeResource.js
index 941c5ab..7b56b34 100644
--- a/server/resources/nodeResource.js
+++ b/server/resources/nodeResource.js
@@ -3,7 +3,7 @@
 const _ = require('lodash')
 const deepExtend = require('deep-extend')
 
-const Constraints = require('../../shared/validation/constraints')
+const Constraints = require('../validation/constraints')
 const ErrorTypes = require('../utils/errorTypes')
 const Logger = require('../logger')
 const MonitoringService = require('../services/monitoringService')
diff --git a/server/resources/taskResource.js b/server/resources/taskResource.js
index 5969816..178fe4b 100644
--- a/server/resources/taskResource.js
+++ b/server/resources/taskResource.js
@@ -2,7 +2,7 @@
 
 const _ = require('lodash')
 
-const Constraints = require('../../shared/validation/constraints')
+const Constraints = require('../validation/constraints')
 const ErrorTypes = require('../utils/errorTypes')
 const Resources = require('../utils/resources')
 const Scheduler = require('../jobs/scheduler')
diff --git a/server/services/monitoringService.js b/server/services/monitoringService.js
index a5a8ece..c8fe534 100644
--- a/server/services/monitoringService.js
+++ b/server/services/monitoringService.js
@@ -6,7 +6,7 @@ const moment = require('moment')
 const request = require('request')
 
 const config = require('../config').config
-const Constraints = require('../../shared/validation/constraints')
+const Constraints = require('../validation/constraints')
 const Database = require('../db/database').db
 const DatabaseUtil = require('../utils/databaseUtil')
 const ErrorTypes = require('../utils/errorTypes')
diff --git a/server/templates/config.js b/server/templates/config.js.template
similarity index 100%
rename from server/templates/config.js
rename to server/templates/config.js.template
diff --git a/server/tsconfig.json b/server/tsconfig.json
new file mode 100644
index 0000000..a46576d
--- /dev/null
+++ b/server/tsconfig.json
@@ -0,0 +1,66 @@
+{
+  "compilerOptions": {
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es2018",                       /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    "lib": ["es2018"],                        /* Specify library files to be included in the compilation. */
+    "allowJs": true,                          /* Allow javascript files to be compiled. */
+    "checkJs": false,                         /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    "sourceMap": true,                        /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "../server-build",              /* Redirect output structure to the directory. */
+    "rootDir": "./",                          /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,                           /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+
+    /* Advanced Options */
+    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */
+  }
+}
diff --git a/server/utils/resources.js b/server/utils/resources.js
index 7b0e82a..39cf467 100644
--- a/server/utils/resources.js
+++ b/server/utils/resources.js
@@ -2,7 +2,7 @@
 
 const _ = require('lodash')
 
-const Constraints = require('../../shared/validation/constraints')
+const Constraints = require('../validation/constraints')
 const ErrorTypes = require('../utils/errorTypes')
 const Logger = require('../logger')
 const Validator = require('../validation/validator')
diff --git a/server/validation/constraints.js b/server/validation/constraints.js
new file mode 120000
index 0000000..5b44939
--- /dev/null
+++ b/server/validation/constraints.js
@@ -0,0 +1 @@
+../../shared/validation/constraints.js
\ No newline at end of file