refactor(ts): convert to typescript

.clang-format

@@ -0,0 +1,3 @@
+Language:        JavaScript
+BasedOnStyle:    Google
+ColumnLimit:     80

.jsdoc.js

@@ -31,7 +31,7 @@ module.exports = {
   source: {
     excludePattern: '(^|\\/|\\\\)[._]',
     include: [
-      'src'
+      'build/src'
     ],
     includePattern: '\\.js$'
   },

README.md

@@ -66,7 +66,7 @@ Google APIs Client Libraries, in [Client Libraries Explained][explained].
 
 ```javascript
 // Imports the Google Cloud client library
-const Datastore = require('@google-cloud/datastore');
+const {Datastore} = require('@google-cloud/datastore');
 
 // Your Google Cloud Platform project ID
 const projectId = 'YOUR_PROJECT_ID';

package.json

@@ -8,7 +8,7 @@
     "node": ">=6.0.0"
   },
   "repository": "googleapis/nodejs-datastore",
-  "main": "./src/index.js",
+  "main": "./build/src/index.js",
   "files": [
     "protos",
     "src",
@@ -53,14 +53,18 @@
   "scripts": {
     "docs": "jsdoc -c .jsdoc.js",
     "generate-scaffolding": "repo-tools generate all && repo-tools generate lib_samples_readme -l samples/ --config ../.cloud-repo-tools.json",
-    "lint": "eslint src/ samples/ system-test/ test/",
-    "prettier": "prettier --write src/*.js src/*/*.js samples/*.js samples/*/*.js test/*.js test/*/*.js system-test/*.js system-test/*/*.js",
-    "cover": "nyc --reporter=lcov mocha test/*.js && nyc report",
+    "lint": "eslint 'samples/*.js' 'samples/**/*.js'",
+    "cover": "nyc --reporter=lcov mocha build/test && nyc report",
     "samples-test": "cd samples/ && npm link ../ && npm test && cd ../",
-    "test-no-cover": "mocha test/*.js",
+    "test-no-cover": "mocha build/test",
     "test": "npm run cover",
-    "system-test": "mocha system-test/*.js --timeout 600000",
-    "fix": "eslint '**/*.js' --fix && npm run prettier"
+    "presystem-test": "npm run compile",
+    "system-test": "mocha build/system-test --timeout 600000",
+    "fix": "eslint 'samples/*.js' 'samples/**/*.js' --fix",
+    "clean": "gts clean",
+    "compile": "tsc -p . && cp -r src/v1/ build/src/v1/ && cp -r protos build/",
+    "prepare": "npm run compile",
+    "pretest": "npm run compile"
   },
   "dependencies": {
     "@google-cloud/projectify": "^0.3.0",
@@ -79,12 +83,21 @@
   },
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "^2.3.0",
+    "@types/arrify": "^1.0.4",
+    "@types/async": "^2.0.50",
+    "@types/extend": "^3.0.0",
+    "@types/is": "0.0.20",
+    "@types/mocha": "^5.2.5",
+    "@types/proxyquire": "^1.3.28",
+    "@types/sinon": "^5.0.5",
+    "@types/through2": "^2.0.34",
     "async": "^2.6.1",
     "codecov": "^3.0.2",
     "eslint": "^5.0.0",
     "eslint-config-prettier": "^3.0.0",
     "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-prettier": "^3.0.0",
+    "gts": "^0.8.0",
     "ink-docstrap": "^1.3.2",
     "intelli-espower-loader": "^1.0.1",
     "jsdoc": "^3.5.5",
@@ -93,6 +106,12 @@
     "power-assert": "^1.5.0",
     "prettier": "^1.13.5",
     "proxyquire": "^2.0.1",
-    "sinon": "^7.0.0"
+    "sinon": "^7.0.0",
+    "typescript": "~3.1.5"
+  },
+  "nyc": {
+    "exclude": [
+      "build/test"
+    ]
   }
 }

samples/concepts.js

@@ -21,7 +21,7 @@ const sinon = require('sinon');
 // specified by the GOOGLE_APPLICATION_CREDENTIALS environment variable and use
 // the project specified by the GCLOUD_PROJECT environment variable. See
 // https://googlecloudplatform.github.io/gcloud-node/#/docs/google-cloud/latest/guides/authentication
-const Datastore = require('@google-cloud/datastore');
+const {Datastore} = require('@google-cloud/datastore');
 
 function makeStub() {
   return sinon.stub().returns(Promise.resolve([]));

samples/quickstart.js

@@ -17,7 +17,7 @@
 
 // [START datastore_quickstart]
 // Imports the Google Cloud client library
-const Datastore = require('@google-cloud/datastore');
+const {Datastore} = require('@google-cloud/datastore');
 
 // Your Google Cloud Platform project ID
 const projectId = 'YOUR_PROJECT_ID';

samples/system-test/quickstart.test.js

@@ -20,7 +20,8 @@ const sinon = require(`sinon`);
 const test = require(`ava`);
 const tools = require(`@google-cloud/nodejs-repo-tools`);
 
-const datastore = proxyquire(`@google-cloud/datastore`, {})();
+const {Datastore} = proxyquire(`@google-cloud/datastore`, {});
+const datastore = new Datastore();
 
 const entity = {description: `Buy milk`};
 const kind = `Task`;
@@ -70,6 +71,8 @@ test.cb(`should get a task from Datastore`, t => {
   };
 
   proxyquire(`../quickstart`, {
-    '@google-cloud/datastore': sinon.stub().returns(datastoreMock),
+    '@google-cloud/datastore': {
+      Datastore: sinon.stub().returns(datastoreMock),
+    },
   });
 });

samples/system-test/tasks.test.js

@@ -15,11 +15,11 @@
 
 'use strict';
 
-const Datastore = require(`@google-cloud/datastore`);
-const datastore = new Datastore({});
-const path = require(`path`);
-const test = require(`ava`);
-const tools = require(`@google-cloud/nodejs-repo-tools`);
+const {Datastore} = require('@google-cloud/datastore');
+const datastore = new Datastore();
+const path = require('path');
+const test = require('ava');
+const tools = require('@google-cloud/nodejs-repo-tools');
 
 const cmd = `node tasks.js`;
 const cwd = path.join(__dirname, `..`);

samples/tasks.js

@@ -20,10 +20,10 @@
 // specified by the GOOGLE_APPLICATION_CREDENTIALS environment variable and use
 // the project specified by the GCLOUD_PROJECT environment variable. See
 // https://googlecloudplatform.github.io/google-cloud-node/#/docs/datastore/latest/guides/authentication
-const Datastore = require('@google-cloud/datastore');
+const {Datastore} = require('@google-cloud/datastore');
 
 // Creates a client
-const datastore = new Datastore({});
+const datastore = new Datastore();
 // [END datastore_build_service]
 
 /*

src/entity.js → src/entity.ts

@@ -16,9 +16,9 @@
 
 'use strict';
 
-const arrify = require('arrify');
-const extend = require('extend');
-const is = require('is');
+import * as arrify from 'arrify';
+import * as extend from 'extend';
+import * as is from 'is';
 
 const entity = module.exports;
 
@@ -48,7 +48,7 @@ entity.KEY_SYMBOL = Symbol('KEY');
  * @param {number} value The double value.
  *
  * @example
- * const Datastore = require('@google-cloud/datastore');
+ * const {Datastore} = require('@google-cloud/datastore');
  * const datastore = new Datastore();
  * const aDouble = datastore.double(7.3);
  */
@@ -82,7 +82,7 @@ entity.isDsDouble = isDsDouble;
  * @param {number|string} value The integer value.
  *
  * @example
- * const Datastore = require('@google-cloud/datastore');
+ * const {Datastore} = require('@google-cloud/datastore');
  * const datastore = new Datastore();
  * const anInt = datastore.int(7);
  */
@@ -118,7 +118,7 @@ entity.isDsInt = isDsInt;
  * @param {number} coordinates.longitude Longitudinal value.
  *
  * @example
- * const Datastore = require('@google-cloud/datastore');
+ * const {Datastore} = require('@google-cloud/datastore');
  * const datastore = new Datastore();
  * const coordinates = {
  *   latitude: 40.6894,
@@ -163,7 +163,7 @@ entity.isDsGeoPoint = isDsGeoPoint;
  * @param {string} [options.namespace] Optional namespace.
  *
  * @example
- * const Datastore = require('@google-cloud/datastore');
+ * const {Datastore} = require('@google-cloud/datastore');
  * const datastore = new Datastore();
  * const key = datastore.key({
  *   namespace: 'ns',
@@ -268,7 +268,7 @@ function decodeValueProto(valueProto) {
     }
 
     case 'doubleValue': {
-      return parseFloat(value, 10);
+      return Number(value);
     }
 
     case 'integerValue': {
@@ -310,14 +310,15 @@ entity.decodeValueProto = decodeValueProto;
  * // }
  */
 function encodeValue(value) {
-  const valueProto = {};
+  // tslint:disable-next-line no-any
+  const valueProto: any = {};
 
   if (is.boolean(value)) {
     valueProto.booleanValue = value;
     return valueProto;
   }
 
-  if (is.nil(value)) {
+  if (is.null(value)) {
     valueProto.nullValue = 0;
     return valueProto;
   }
@@ -642,7 +643,8 @@ entity.isKeyComplete = isKeyComplete;
  * });
  */
 function keyFromKeyProto(keyProto) {
-  const keyOptions = {
+  // tslint:disable-next-line no-any
+  const keyOptions: any = {
     path: [],
   };
 
@@ -698,7 +700,8 @@ function keyToKeyProto(key) {
     });
   }
 
-  const keyProto = {
+  // tslint:disable-next-line no-any
+  const keyProto: any = {
     path: [],
   };
 
@@ -719,7 +722,8 @@ function keyToKeyProto(key) {
       });
     }
 
-    const pathElement = {
+    // tslint:disable-next-line no-any
+    const pathElement: any = {
       kind: key.kind,
     };
 
@@ -787,7 +791,8 @@ function queryToQueryProto(query) {
     '+': 'ASCENDING',
   };
 
-  const queryProto = {
+  // tslint:disable-next-line no-any
+  const queryProto: any = {
     distinctOn: query.groupByVal.map(groupBy => {
       return {
         name: groupBy,
@@ -838,7 +843,8 @@ function queryToQueryProto(query) {
 
   if (query.filters.length > 0) {
     const filters = query.filters.map(filter => {
-      let value = {};
+      // tslint:disable-next-line no-any
+      let value: any = {};
 
       if (filter.name === '__key__') {
         value.keyValue = entity.keyToKeyProto(filter.val);