diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..0f17867
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/.eslintrc.json b/.eslintrc.json
index d097bf7..f8f61db 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,17 +1,19 @@
 {
-    "env": {
-        "commonjs": true,
-        "es6": true,
-        "node": true
-    },
-    "extends": "eslint:recommended",
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly"
-    },
-    "parserOptions": {
-        "ecmaVersion": 2018
-    },
-    "rules": {
-    }
-}
\ No newline at end of file
+  "env": {
+    "commonjs": true,
+    "es6": true,
+    "node": true
+  },
+  "extends": "eslint:recommended",
+  "globals": {
+    "Atomics": "readonly",
+    "SharedArrayBuffer": "readonly"
+  },
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "sourceType": "module",
+    "ecmaVersion": 2019
+  },
+  "rules": {
+  }
+}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 518f617..b6e6ae6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,32 +8,46 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
 
     - name: Install dependencies
       run: npm ci
 
+    - name: Format check
+      run: npm run format:check
+
     - name: Lint
       run: npm run lint
 
-    # - name: Test script
-    #   run: npm test
+    - name: Test
+      run: npm test
+
+    - uses: actions/upload-artifact@master
+      with:
+        name: coverage
+        path: coverage
 
     # - name: Build production
     #   run: npm run build
 
 
   test-prod:
-    runs-on: ubuntu-18.04
+    runs-on: ${{ matrix.os }}
     needs: test
     strategy:
       matrix:
+        # os: ['ubuntu-18.04', 'macOS-10.14']
+        os: ['ubuntu-18.04', 'macOS-10.14', 'windows-2019']
         # hugo-version: ['latest']
         # extended: [true]
-        hugo-version: ['latest', '0.58.2']
+        hugo-version: ['latest', '0.57.2']
         extended: [true, false]
 
     steps:
     - uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
 
     - name: Test action
       uses: ./
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..97b6e6d
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,11 @@
+{
+    "printWidth": 80,
+    "tabWidth": 2,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": false,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+  }
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..3b66410
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "git.ignoreLimitWarning": true
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 32972a5..61607fb 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,15 @@
 
 We can run Hugo on a virtual machine of GitHub Actions by this Hugo action. Hugo extended version and Hugo Modules are supported.
 
-From `v2.0.0`, this Hugo action migrated to a JavaScript action. We no longer build or pull a Hugo docker image. Thanks to this change, we can complete this action less than **2 sec**. (A docker base action was taking about 1 min or more execution time to build or pull.)
+From `v2.0.0`, this Hugo action migrated to a JavaScript (TypeScript)  action. We no longer build or pull a Hugo docker image. Thanks to this change, we can complete this action less than **3 sec**. (A docker base action was taking about 1 min or more execution time to build or pull.)
+
+| OS (runs-on) | ubuntu-18.04 | macOS-10.14 | windows-2019 |
+|---|:---:|:---:|:---:|
+| Support | ✅️ | ✅️ | ✅️ |
+
+| Hugo type | Hugo Extended | Hugo Modules | Latest Hugo |
+|---|:---:|:---:|:---:|
+| Support | ✅️ | ✅️ | ✅️ |
 
 
 
@@ -41,13 +49,15 @@ on:
 jobs:
   build-deploy:
     runs-on: ubuntu-18.04
+    # runs-on: macOS-10.14
+    # runs-on: windows-2019
     steps:
     - uses: actions/checkout@master
 
     - name: Setup Hugo
       uses: peaceiris/actions-hugo@v2.1.0
       with:
-        hugo-version: '0.58.2'
+        hugo-version: '0.58.3'
 
     - name: Build
       run: hugo --gc --minify --cleanDestinationDir
@@ -70,7 +80,7 @@ jobs:
 - name: Setup Hugo
   uses: peaceiris/actions-hugo@v2.1.0
   with:
-    hugo-version: '0.58.2'
+    hugo-version: '0.58.3'
     extended: true
 ```
 
diff --git a/__tests__/get-os.test.ts b/__tests__/get-os.test.ts
new file mode 100644
index 0000000..d30e939
--- /dev/null
+++ b/__tests__/get-os.test.ts
@@ -0,0 +1,18 @@
+import getOS from '../src/get-os';
+
+describe('getOS', () => {
+  test('test', () => {
+    expect(getOS('linux')).toBe('Linux');
+    expect(getOS('darwin')).toBe('macOS');
+    expect(getOS('win32')).toBe('Windows');
+  });
+
+  test('test exception', () => {
+    // expect(() => {
+    //   getOS("win32");
+    // }).toThrowError("Windows is not supported");
+    expect(() => {
+      getOS('centos');
+    }).toThrowError('centos is not supported');
+  });
+});
diff --git a/__tests__/get-url.test.ts b/__tests__/get-url.test.ts
new file mode 100644
index 0000000..118a8f2
--- /dev/null
+++ b/__tests__/get-url.test.ts
@@ -0,0 +1,22 @@
+import getURL from '../src/get-url';
+
+describe('getURL()', () => {
+  test('test', () => {
+    const baseURL =
+      'https://github.com/gohugoio/hugo/releases/download/v0.58.2';
+    const urlLinux = `${baseURL}/hugo_0.58.2_Linux-64bit.tar.gz`;
+    const urlLinuxExtended = `${baseURL}/hugo_extended_0.58.2_Linux-64bit.tar.gz`;
+    const urlMacOS = `${baseURL}/hugo_0.58.2_macOS-64bit.tar.gz`;
+    const urlWindows = `${baseURL}/hugo_0.58.2_Windows-64bit.zip`;
+    expect(getURL('Linux', 'false', '0.58.2')).toBe(urlLinux);
+    expect(getURL('Linux', 'true', '0.58.2')).toBe(urlLinuxExtended);
+    expect(getURL('macOS', 'false', '0.58.2')).toBe(urlMacOS);
+    expect(getURL('Windows', 'false', '0.58.2')).toBe(urlWindows);
+  });
+
+  // test("test exception", () => {
+  //   expect(() => {
+  //     getURL("Linux", "hoge", "0.58.2");
+  //   }).toThrowError("Invalid input (extended): hoge");
+  // });
+});
diff --git a/__tests__/index.test.js b/__tests__/index.test.js
deleted file mode 100644
index 9725109..0000000
--- a/__tests__/index.test.js
+++ /dev/null
@@ -1,23 +0,0 @@
-const wait = require('./wait');
-const process = require('process');
-const cp = require('child_process');
-const path = require('path');
-
-test('throws invalid number', async() => {
-    await expect(wait('foo')).rejects.toThrow('milleseconds not a number');
-});
-
-test('wait 500 ms', async() => {
-    const start = new Date();
-    await wait(500);
-    const end = new Date();
-    var delta = Math.abs(end - start);
-    expect(delta).toBeGreaterThan(450);
-});
-
-// shows how the runner will run a javascript action with env / stdout protocol
-test('test runs', () => {
-    process.env['INPUT_MILLISECONDS'] = 500;
-    const ip = path.join(__dirname, 'index.js');
-    console.log(cp.execSync(`node ${ip}`).toString());
-})
diff --git a/jest.config.js b/jest.config.js
new file mode 100644
index 0000000..563d4cc
--- /dev/null
+++ b/jest.config.js
@@ -0,0 +1,11 @@
+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  testRunner: 'jest-circus/runner',
+  transform: {
+    '^.+\\.ts$': 'ts-jest'
+  },
+  verbose: true
+}
\ No newline at end of file
diff --git a/lib/get-latest-version.js b/lib/get-latest-version.js
index e3bdcd3..9eeadfb 100644
--- a/lib/get-latest-version.js
+++ b/lib/get-latest-version.js
@@ -1,21 +1,22 @@
-const XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
-
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest;
 function getLatestVersion() {
-  return new Promise((resolve, reject) => {
-    const xhr = new XMLHttpRequest();
-    const url = "https://formulae.brew.sh/api/formula/hugo.json";
-    xhr.open("GET", url);
-    xhr.send();
-    xhr.onreadystatechange = function() {
-      if (xhr.readyState === 4 && xhr.status === 200) {
-        const result = JSON.parse(xhr.responseText);
-        const latestVersion = result.versions.stable;
-        resolve(latestVersion);
-      } else if (xhr.readyState === 4 && xhr.status !== 200) {
-        reject(`ERROR: got status ${xhr.status} of ${url}`);
-      }
-    };
-  });
+    return new Promise((resolve, reject) => {
+        const xhr = new XMLHttpRequest();
+        const url = 'https://formulae.brew.sh/api/formula/hugo.json';
+        xhr.open('GET', url);
+        xhr.send();
+        xhr.onreadystatechange = function () {
+            if (xhr.readyState === 4 && xhr.status === 200) {
+                const result = JSON.parse(xhr.responseText);
+                const latestVersion = result.versions.stable;
+                resolve(latestVersion);
+            }
+            else if (xhr.readyState === 4 && xhr.status !== 200) {
+                reject(`ERROR: got status ${xhr.status} of ${url}`);
+            }
+        };
+    });
 }
-
-module.exports = getLatestVersion;
+exports.default = getLatestVersion;
diff --git a/lib/get-os.js b/lib/get-os.js
new file mode 100644
index 0000000..014188c
--- /dev/null
+++ b/lib/get-os.js
@@ -0,0 +1,18 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function getOS(platform) {
+    if (platform === 'linux') {
+        return 'Linux';
+    }
+    else if (platform === 'darwin') {
+        return 'macOS';
+    }
+    else if (platform === 'win32') {
+        return 'Windows';
+        // throw new Error("Windows is not supported");
+    }
+    else {
+        throw new Error(`${platform} is not supported`);
+    }
+}
+exports.default = getOS;
diff --git a/lib/get-url.js b/lib/get-url.js
new file mode 100644
index 0000000..dc24057
--- /dev/null
+++ b/lib/get-url.js
@@ -0,0 +1,27 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function getURL(os, extended, version) {
+    const extendedStr = (extended) => {
+        if (extended === 'true') {
+            return 'extended_';
+        }
+        else {
+            return '';
+            // } else {
+            //   throw new Error(`Invalid input (extended): ${extended}`);
+        }
+    };
+    const ext = (os) => {
+        if (os === 'Windows') {
+            return 'zip';
+        }
+        else {
+            return 'tar.gz';
+        }
+    };
+    const hugoName = `hugo_${extendedStr(extended)}${version}_${os}-64bit`;
+    const baseURL = 'https://github.com/gohugoio/hugo/releases/download';
+    const url = `${baseURL}/v${version}/${hugoName}.${ext(os)}`;
+    return url;
+}
+exports.default = getURL;
diff --git a/lib/index.js b/lib/index.js
index d90048a..fb584bd 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,57 +1,58 @@
-const core = require("@actions/core");
-const tc = require("@actions/tool-cache");
-const io = require("@actions/io");
-const exec = require("@actions/exec");
-const getLatestVersion = require("./get-latest-version");
-
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const core = __importStar(require("@actions/core"));
+const exec = __importStar(require("@actions/exec"));
+const get_latest_version_1 = __importDefault(require("./get-latest-version"));
+const installer_1 = __importDefault(require("./installer"));
 // most @actions toolkit packages have async methods
-async function run() {
-  try {
-    getLatestVersion().then(
-      async function(latestVersion) {
-        let hugoVersion = core.getInput("hugo-version");
-        if (!hugoVersion || hugoVersion === "latest") {
-          hugoVersion = latestVersion;
+function run() {
+    return __awaiter(this, void 0, void 0, function* () {
+        const dump = () => __awaiter(this, void 0, void 0, function* () {
+            // Show version
+            yield exec.exec('hugo version');
+            yield exec.exec('go version');
+            yield exec.exec('git --version');
+        });
+        try {
+            const hugoVersion = core.getInput('hugo-version');
+            console.log(`Hugo version: ${hugoVersion}`);
+            if (hugoVersion === '' || hugoVersion === 'latest') {
+                get_latest_version_1.default().then(function (latestVersion) {
+                    return __awaiter(this, void 0, void 0, function* () {
+                        yield installer_1.default(latestVersion);
+                        yield dump();
+                    });
+                }, function (error) {
+                    core.setFailed(error);
+                });
+            }
+            else {
+                yield installer_1.default(hugoVersion);
+                yield dump();
+            }
         }
-        console.log(`Hugo version: ${hugoVersion}`);
-
-        const extended = core.getInput("extended");
-        console.log(`Hugo extended: ${extended}`);
-        let extendedStr = "";
-        if (extended === "true") {
-          extendedStr = "extended_";
+        catch (error) {
+            core.setFailed(error.message);
         }
-
-        console.log(`Operating System: ${process.platform}`);
-
-        const hugoName = `hugo_${extendedStr}${hugoVersion}_Linux-64bit`;
-        core.debug(`hugoName: ${hugoName}`);
-
-        const hugoURL = `https://github.com/gohugoio/hugo/releases/download/v${hugoVersion}/${hugoName}.tar.gz`;
-        core.debug(`hugoURL: ${hugoURL}`);
-
-        const hugoPath = `${process.env.HOME}/bin`;
-        await io.mkdirP(hugoPath);
-        core.addPath(hugoPath);
-
-        // Download and extract Hugo binary
-        const hugoTarball = await tc.downloadTool(hugoURL);
-        const hugoExtractedFolder = await tc.extractTar(hugoTarball, "/tmp");
-        core.debug("hugoExtractedFolder:", hugoExtractedFolder);
-        await io.mv(`${hugoExtractedFolder}/hugo`, hugoPath);
-
-        // Show version
-        await exec.exec('hugo version');
-        await exec.exec('go version');
-        await exec.exec('git --version');
-      },
-      function(error) {
-        core.setFailed(error);
-      }
-    );
-  } catch (error) {
-    core.setFailed(error.message);
-  }
+    });
 }
-
 run();
diff --git a/lib/installer.js b/lib/installer.js
new file mode 100644
index 0000000..2fd3641
--- /dev/null
+++ b/lib/installer.js
@@ -0,0 +1,57 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const core = __importStar(require("@actions/core"));
+const tc = __importStar(require("@actions/tool-cache"));
+const io = __importStar(require("@actions/io"));
+const get_os_1 = __importDefault(require("./get-os"));
+const get_url_1 = __importDefault(require("./get-url"));
+function installer(version) {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            const extended = core.getInput('extended');
+            console.log(`Hugo extended: ${extended}`);
+            const osName = get_os_1.default(process.platform);
+            console.log(`Operating System: ${osName}`);
+            const hugoURL = get_url_1.default(osName, extended, version);
+            core.debug(`hugoURL: ${hugoURL}`);
+            const hugoPath = `${process.env.HOME}/bin`;
+            yield io.mkdirP(hugoPath);
+            core.addPath(hugoPath);
+            // Download and extract Hugo binary
+            const hugoAssets = yield tc.downloadTool(hugoURL);
+            let hugoBin = '';
+            if (osName === 'Windows') {
+                const hugoExtractedFolder = yield tc.extractZip(hugoAssets, '/tmp');
+                hugoBin = `${hugoExtractedFolder}/hugo.exe`;
+            }
+            else {
+                const hugoExtractedFolder = yield tc.extractTar(hugoAssets, '/tmp');
+                hugoBin = `${hugoExtractedFolder}/hugo`;
+            }
+            yield io.mv(hugoBin, hugoPath);
+        }
+        catch (error) {
+            core.setFailed(error.message);
+        }
+    });
+}
+exports.default = installer;
diff --git a/node_modules/@actions/exec/package.json b/node_modules/@actions/exec/package.json
index d9497e6..bb85262 100644
--- a/node_modules/@actions/exec/package.json
+++ b/node_modules/@actions/exec/package.json
@@ -1,39 +1,15 @@
 {
-  "_from": "@actions/exec",
-  "_id": "@actions/exec@1.0.1",
-  "_inBundle": false,
-  "_integrity": "sha512-nvFkxwiicvpzNiCBF4wFBDfnBvi7xp/as7LE1hBxBxKG2L29+gkIPBiLKMVORL+Hg3JNf07AKRfl0V5djoypjQ==",
-  "_location": "/@actions/exec",
-  "_phantomChildren": {},
-  "_requested": {
-    "type": "tag",
-    "registry": true,
-    "raw": "@actions/exec",
-    "name": "@actions/exec",
-    "escapedName": "@actions%2fexec",
-    "scope": "@actions",
-    "rawSpec": "",
-    "saveSpec": null,
-    "fetchSpec": "latest"
-  },
-  "_requiredBy": [
-    "#USER",
-    "/",
-    "/@actions/tool-cache"
-  ],
-  "_resolved": "https://registry.npmjs.org/@actions/exec/-/exec-1.0.1.tgz",
-  "_shasum": "1624b541165697e7008d7c87bc1f69f191263c6c",
-  "_spec": "@actions/exec",
-  "_where": "/Users/iris/Documents/repos/github.com/peaceiris/actions-hugo",
-  "bugs": {
-    "url": "https://github.com/actions/toolkit/issues"
-  },
-  "bundleDependencies": false,
-  "deprecated": false,
+  "name": "@actions/exec",
+  "version": "1.0.1",
   "description": "Actions exec lib",
-  "devDependencies": {
-    "@actions/io": "^1.0.1"
-  },
+  "keywords": [
+    "github",
+    "actions",
+    "exec"
+  ],
+  "homepage": "https://github.com/actions/toolkit/tree/master/packages/exec",
+  "license": "MIT",
+  "main": "lib/exec.js",
   "directories": {
     "lib": "lib",
     "test": "__tests__"
@@ -41,16 +17,6 @@
   "files": [
     "lib"
   ],
-  "gitHead": "a2ab4bcf78e4f7080f0d45856e6eeba16f0bbc52",
-  "homepage": "https://github.com/actions/toolkit/tree/master/packages/exec",
-  "keywords": [
-    "github",
-    "actions",
-    "exec"
-  ],
-  "license": "MIT",
-  "main": "lib/exec.js",
-  "name": "@actions/exec",
   "publishConfig": {
     "access": "public"
   },
@@ -62,5 +28,15 @@
     "test": "echo \"Error: run tests from root\" && exit 1",
     "tsc": "tsc"
   },
-  "version": "1.0.1"
-}
+  "bugs": {
+    "url": "https://github.com/actions/toolkit/issues"
+  },
+  "devDependencies": {
+    "@actions/io": "^1.0.1"
+  },
+  "gitHead": "a2ab4bcf78e4f7080f0d45856e6eeba16f0bbc52"
+
+,"_resolved": "https://registry.npmjs.org/@actions/exec/-/exec-1.0.1.tgz"
+,"_integrity": "sha512-nvFkxwiicvpzNiCBF4wFBDfnBvi7xp/as7LE1hBxBxKG2L29+gkIPBiLKMVORL+Hg3JNf07AKRfl0V5djoypjQ=="
+,"_from": "@actions/exec@1.0.1"
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 1cd7c8b..cc08f44 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "hugo-action",
-  "version": "0.1.0",
+  "version": "2.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -461,6 +461,12 @@
         "@babel/types": "^7.3.0"
       }
     },
+    "@types/eslint-visitor-keys": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz",
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+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz",
@@ -486,6 +492,39 @@
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       }
     },
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+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-24.0.18.tgz",
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+      "dev": true,
+      "requires": {
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+    },
+    "@types/jest-diff": {
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+      "resolved": "https://registry.npmjs.org/@types/jest-diff/-/jest-diff-20.0.1.tgz",
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+      "dev": true
+    },
+    "@types/json-schema": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.3.tgz",
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+      "dev": true
+    },
+    "@types/node": {
+      "version": "12.7.5",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.7.5.tgz",
+      "integrity": "sha512-9fq4jZVhPNW8r+UYKnxF1e2HkDWOWKM5bC2/7c9wPV835I0aOrVbS/Hw/pWPk2uKrNXQqg9Z959Kz+IYDd5p3w==",
+      "dev": true
+    },
+    "@types/normalize-package-data": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz",
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+    },
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       "resolved": "https://registry.npmjs.org/@types/stack-utils/-/stack-utils-1.0.1.tgz",
@@ -507,6 +546,49 @@
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       "dev": true
     },
+    "@typescript-eslint/experimental-utils": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-2.3.0.tgz",
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+      "dev": true,
+      "requires": {
+        "@types/json-schema": "^7.0.3",
+        "@typescript-eslint/typescript-estree": "2.3.0",
+        "eslint-scope": "^5.0.0"
+      }
+    },
+    "@typescript-eslint/parser": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-2.3.0.tgz",
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+      "dev": true,
+      "requires": {
+        "@types/eslint-visitor-keys": "^1.0.0",
+        "@typescript-eslint/experimental-utils": "2.3.0",
+        "@typescript-eslint/typescript-estree": "2.3.0",
+        "eslint-visitor-keys": "^1.1.0"
+      }
+    },
+    "@typescript-eslint/typescript-estree": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-2.3.0.tgz",
+      "integrity": "sha512-WBxfwsTeCOsmQ7cLjow7lgysviBKUW34npShu7dxJYUQCbSG5nfZWZTgmQPKEc+3flpbSM7tjXjQOgETYp+njQ==",
+      "dev": true,
+      "requires": {
+        "glob": "^7.1.4",
+        "is-glob": "^4.0.1",
+        "lodash.unescape": "4.0.1",
+        "semver": "^6.3.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
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+        }
+      }
+    },
     "abab": {
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       "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.1.tgz",
@@ -866,6 +948,15 @@
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       }
     },
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+      "resolved": "https://registry.npmjs.org/bs-logger/-/bs-logger-0.2.6.tgz",
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+      "requires": {
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@@ -898,6 +989,32 @@
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/caller-callsite/-/caller-callsite-2.0.0.tgz",
+      "integrity": "sha1-hH4PzgoiN1CpoCfFSzNzGtMVQTQ=",
+      "dev": true,
+      "requires": {
+        "callsites": "^2.0.0"
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+      "dependencies": {
+        "callsites": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/callsites/-/callsites-2.0.0.tgz",
+          "integrity": "sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA=",
+          "dev": true
+        }
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+    },
+    "caller-path": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-2.0.0.tgz",
+      "integrity": "sha1-Ro+DBE42mrIBD6xfBs7uFbsssfQ=",
+      "dev": true,
+      "requires": {
+        "caller-callsite": "^2.0.0"
+      }
+    },
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@@ -1077,6 +1194,30 @@
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       "dev": true
     },
+    "cosmiconfig": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-5.2.1.tgz",
+      "integrity": "sha512-H65gsXo1SKjf8zmrJ67eJk8aIRKV5ff2D4uKZIBZShbhGSpEmsQOPW/SKMKYhSTrqR7ufy6RP69rPogdaPh/kA==",
+      "dev": true,
+      "requires": {
+        "import-fresh": "^2.0.0",
+        "is-directory": "^0.3.1",
+        "js-yaml": "^3.13.1",
+        "parse-json": "^4.0.0"
+      },
+      "dependencies": {
+        "import-fresh": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-2.0.0.tgz",
+          "integrity": "sha1-2BNVwVYS04bGH53dOSLUMEgipUY=",
+          "dev": true,
+          "requires": {
+            "caller-path": "^2.0.0",
+            "resolve-from": "^3.0.0"
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+      }
+    },
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       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
@@ -2375,6 +2516,12 @@
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       "dev": true
     },
+    "get-stdin": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-7.0.0.tgz",
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+    },
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@@ -2547,6 +2694,100 @@
         "sshpk": "^1.7.0"
       }
     },
+    "husky": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-3.0.5.tgz",
+      "integrity": "sha512-cKd09Jy9cDyNIvAdN2QQAP/oA21sle4FWXjIMDttailpLAYZuBE7WaPmhrkj+afS8Sj9isghAtFvWSQ0JiwOHg==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.4.2",
+        "cosmiconfig": "^5.2.1",
+        "execa": "^1.0.0",
+        "get-stdin": "^7.0.0",
+        "is-ci": "^2.0.0",
+        "opencollective-postinstall": "^2.0.2",
+        "pkg-dir": "^4.2.0",
+        "please-upgrade-node": "^3.2.0",
+        "read-pkg": "^5.1.1",
+        "run-node": "^1.0.0",
+        "slash": "^3.0.0"
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+      "dependencies": {
+        "find-up": {
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+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
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+          "requires": {
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+        "locate-path": {
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+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
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+          "requires": {
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+            "normalize-package-data": "^2.5.0",
+            "parse-json": "^5.0.0",
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+          "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
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       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
@@ -2763,6 +3004,12 @@
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+      "resolved": "https://registry.npmjs.org/is-directory/-/is-directory-0.3.1.tgz",
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@@ -3031,6 +3278,30 @@
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+    "jest-circus": {
+      "version": "24.9.0",
+      "resolved": "https://registry.npmjs.org/jest-circus/-/jest-circus-24.9.0.tgz",
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+      "dev": true,
+      "requires": {
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+        "@jest/environment": "^24.9.0",
+        "@jest/test-result": "^24.9.0",
+        "@jest/types": "^24.9.0",
+        "chalk": "^2.0.1",
+        "co": "^4.6.0",
+        "expect": "^24.9.0",
+        "is-generator-fn": "^2.0.0",
+        "jest-each": "^24.9.0",
+        "jest-matcher-utils": "^24.9.0",
+        "jest-message-util": "^24.9.0",
+        "jest-snapshot": "^24.9.0",
+        "jest-util": "^24.9.0",
+        "pretty-format": "^24.9.0",
+        "stack-utils": "^1.0.1",
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@@ -3568,6 +3839,12 @@
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+      "resolved": "https://registry.npmjs.org/lines-and-columns/-/lines-and-columns-1.1.6.tgz",
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     },
+    "lodash.memoize": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
+      "integrity": "sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=",
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     "lodash.sortby": {
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       "integrity": "sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=",
       "dev": true
     },
+    "lodash.unescape": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.unescape/-/lodash.unescape-4.0.1.tgz",
+      "integrity": "sha1-vyJJiGzlFM2hEvrpIYzcBlIR/Jw=",
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@@ -3629,6 +3918,12 @@
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@@ -3966,6 +4261,12 @@
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+    "opencollective-postinstall": {
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+      "resolved": "https://registry.npmjs.org/opencollective-postinstall/-/opencollective-postinstall-2.0.2.tgz",
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@@ -4151,6 +4452,15 @@
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+      "resolved": "https://registry.npmjs.org/please-upgrade-node/-/please-upgrade-node-3.2.0.tgz",
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+      "dev": true,
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@@ -4169,6 +4479,12 @@
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+      "version": "1.18.2",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.18.2.tgz",
+      "integrity": "sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==",
+      "dev": true
+    },
     "pretty-format": {
       "version": "24.9.0",
       "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-24.9.0.tgz",
@@ -4443,6 +4759,12 @@
         "is-promise": "^2.1.0"
       }
     },
+    "run-node": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/run-node/-/run-node-1.0.0.tgz",
+      "integrity": "sha512-kc120TBlQ3mih1LSzdAJXo4xn/GWS2ec0l3S+syHDXP9uRr0JAT8Qd3mdMuyjqCzeZktgP3try92cEgf9Nks8A==",
+      "dev": true
+    },
     "rxjs": {
       "version": "6.5.3",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.5.3.tgz",
@@ -4502,6 +4824,12 @@
       "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
       "dev": true
     },
+    "semver-compare": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/semver-compare/-/semver-compare-1.0.0.tgz",
+      "integrity": "sha1-De4hahyUGrN+nvsXiPavxf9VN/w=",
+      "dev": true
+    },
     "set-blocking": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
@@ -5056,6 +5384,41 @@
       "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=",
       "dev": true
     },
+    "ts-jest": {
+      "version": "24.1.0",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-24.1.0.tgz",
+      "integrity": "sha512-HEGfrIEAZKfu1pkaxB9au17b1d9b56YZSqz5eCVE8mX68+5reOvlM93xGOzzCREIov9mdH7JBG+s0UyNAqr0tQ==",
+      "dev": true,
+      "requires": {
+        "bs-logger": "0.x",
+        "buffer-from": "1.x",
+        "fast-json-stable-stringify": "2.x",
+        "json5": "2.x",
+        "lodash.memoize": "4.x",
+        "make-error": "1.x",
+        "mkdirp": "0.x",
+        "resolve": "1.x",
+        "semver": "^5.5",
+        "yargs-parser": "10.x"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+          "dev": true
+        },
+        "yargs-parser": {
+          "version": "10.1.0",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+          "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^4.1.0"
+          }
+        }
+      }
+    },
     "tslib": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
@@ -5091,6 +5454,12 @@
         "prelude-ls": "~1.1.2"
       }
     },
+    "type-fest": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.6.0.tgz",
+      "integrity": "sha512-q+MB8nYR1KDLrgr4G5yemftpMC7/QLqVndBmEEdqzmNj5dcFOO4Oo8qlwZE3ULT3+Zim1F8Kq4cBnikNhlCMlg==",
+      "dev": true
+    },
     "typed-rest-client": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/typed-rest-client/-/typed-rest-client-1.5.0.tgz",
@@ -5100,6 +5469,12 @@
         "underscore": "1.8.3"
       }
     },
+    "typescript": {
+      "version": "3.6.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.3.tgz",
+      "integrity": "sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==",
+      "dev": true
+    },
     "uglify-js": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.6.0.tgz",
diff --git a/package.json b/package.json
index 452cdc2..d297eea 100644
--- a/package.json
+++ b/package.json
@@ -4,9 +4,13 @@
   "description": "Hugo setup action",
   "main": "lib/index.js",
   "scripts": {
-    "lint": "eslint ./lib/**/*",
-    "test": "jest",
-    "build": "npm prune --production"
+    "lint": "eslint ./src/**/*.ts",
+    "lint:fix": "eslint --fix ./src/**/*.ts",
+    "test": "jest --coverage --verbose",
+    "build": "npm prune --production",
+    "tsc": "tsc",
+    "format": "prettier --write **/*.ts",
+    "format:check": "prettier --check **/*.ts"
   },
   "repository": {
     "type": "git",
@@ -32,7 +36,22 @@
     "xmlhttprequest": "^1.8.0"
   },
   "devDependencies": {
+    "@types/jest": "^24.0.18",
+    "@types/node": "^12.7.5",
+    "@typescript-eslint/parser": "^2.3.0",
     "eslint": "^6.4.0",
-    "jest": "^24.9.0"
+    "husky": "^3.0.5",
+    "jest": "^24.9.0",
+    "jest-circus": "^24.9.0",
+    "prettier": "1.18.2",
+    "ts-jest": "^24.1.0",
+    "typescript": "^3.6.3"
+  },
+  "husky": {
+    "skipCI": true,
+    "hooks": {
+      "pre-commit": "npm run tsc && npm run format",
+      "post-commit": "npm run build && git add node_modules/* && git commit -m \"deps: Husky commit correct node modules\""
+    }
   }
 }
diff --git a/src/get-latest-version.ts b/src/get-latest-version.ts
new file mode 100644
index 0000000..b7f9382
--- /dev/null
+++ b/src/get-latest-version.ts
@@ -0,0 +1,19 @@
+const XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest;
+
+export default function getLatestVersion(): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const xhr = new XMLHttpRequest();
+    const url: string = 'https://formulae.brew.sh/api/formula/hugo.json';
+    xhr.open('GET', url);
+    xhr.send();
+    xhr.onreadystatechange = function() {
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        const result = JSON.parse(xhr.responseText);
+        const latestVersion: string = result.versions.stable;
+        resolve(latestVersion);
+      } else if (xhr.readyState === 4 && xhr.status !== 200) {
+        reject(`ERROR: got status ${xhr.status} of ${url}`);
+      }
+    };
+  });
+}
diff --git a/src/get-os.ts b/src/get-os.ts
new file mode 100644
index 0000000..ef9d50d
--- /dev/null
+++ b/src/get-os.ts
@@ -0,0 +1,12 @@
+export default function getOS(platform: string) {
+  if (platform === 'linux') {
+    return 'Linux';
+  } else if (platform === 'darwin') {
+    return 'macOS';
+  } else if (platform === 'win32') {
+    return 'Windows';
+    // throw new Error("Windows is not supported");
+  } else {
+    throw new Error(`${platform} is not supported`);
+  }
+}
diff --git a/src/get-url.ts b/src/get-url.ts
new file mode 100644
index 0000000..42bd9af
--- /dev/null
+++ b/src/get-url.ts
@@ -0,0 +1,31 @@
+export default function getURL(
+  os: string,
+  extended: string,
+  version: string
+): string {
+  const extendedStr = (extended: string) => {
+    if (extended === 'true') {
+      return 'extended_';
+    } else {
+      return '';
+      // } else {
+      //   throw new Error(`Invalid input (extended): ${extended}`);
+    }
+  };
+
+  const ext = (os: string) => {
+    if (os === 'Windows') {
+      return 'zip';
+    } else {
+      return 'tar.gz';
+    }
+  };
+
+  const hugoName: string = `hugo_${extendedStr(
+    extended
+  )}${version}_${os}-64bit`;
+  const baseURL: string = 'https://github.com/gohugoio/hugo/releases/download';
+  const url: string = `${baseURL}/v${version}/${hugoName}.${ext(os)}`;
+
+  return url;
+}
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..18be6a6
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,38 @@
+import * as core from '@actions/core';
+import * as exec from '@actions/exec';
+import getLatestVersion from './get-latest-version';
+import installer from './installer';
+
+// most @actions toolkit packages have async methods
+async function run() {
+  const dump = async () => {
+    // Show version
+    await exec.exec('hugo version');
+    await exec.exec('go version');
+    await exec.exec('git --version');
+  };
+
+  try {
+    const hugoVersion: string = core.getInput('hugo-version');
+    console.log(`Hugo version: ${hugoVersion}`);
+
+    if (hugoVersion === '' || hugoVersion === 'latest') {
+      getLatestVersion().then(
+        async function(latestVersion): Promise<void> {
+          await installer(latestVersion);
+          await dump();
+        },
+        function(error) {
+          core.setFailed(error);
+        }
+      );
+    } else {
+      await installer(hugoVersion);
+      await dump();
+    }
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+run();
diff --git a/src/installer.ts b/src/installer.ts
new file mode 100644
index 0000000..517f4ef
--- /dev/null
+++ b/src/installer.ts
@@ -0,0 +1,42 @@
+import * as core from '@actions/core';
+import * as tc from '@actions/tool-cache';
+import * as io from '@actions/io';
+import getOS from './get-os';
+import getURL from './get-url';
+
+export default async function installer(version: string) {
+  try {
+    const extended: string = core.getInput('extended');
+    console.log(`Hugo extended: ${extended}`);
+
+    const osName: string = getOS(process.platform);
+    console.log(`Operating System: ${osName}`);
+
+    const hugoURL: string = getURL(osName, extended, version);
+    core.debug(`hugoURL: ${hugoURL}`);
+
+    const hugoPath: string = `${process.env.HOME}/bin`;
+    await io.mkdirP(hugoPath);
+    core.addPath(hugoPath);
+
+    // Download and extract Hugo binary
+    const hugoAssets: string = await tc.downloadTool(hugoURL);
+    let hugoBin: string = '';
+    if (osName === 'Windows') {
+      const hugoExtractedFolder: string = await tc.extractZip(
+        hugoAssets,
+        '/tmp'
+      );
+      hugoBin = `${hugoExtractedFolder}/hugo.exe`;
+    } else {
+      const hugoExtractedFolder: string = await tc.extractTar(
+        hugoAssets,
+        '/tmp'
+      );
+      hugoBin = `${hugoExtractedFolder}/hugo`;
+    }
+    await io.mv(hugoBin, hugoPath);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..7e0f9c2
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,63 @@
+{
+  "compilerOptions": {
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* 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": "./lib",                        /* Redirect output structure to the directory. */
+    "rootDir": "./src",                       /* 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. */
+  },
+  "exclude": ["node_modules", "**/*.test.ts"]
+}