refactor(database): Implement database in Typescript (#72)

* refactor(database): remove old database implementation [Part 1/3] (#61)

* refactor(database): remove old database implementation

This is part #1 of 4 PR's to migrate database

* refactor(database): remove database build processes

* refactor(database): Add typescript database implementation [Part 2/3] (#62)

* refactor(database): add typescript implementation

* refactor(database): update build process to include database.ts

All integration tests pass at this point

* refactor(*): refactor environment builds to be based on separate .ts files

* WIP: patch database code in nodeJS

* refactor(database): classes for typescript database implementation (#55)

* refactor(database): classes for typescript database implementation

* refactor(database): requested changes & other improvements

* fix(database): Add missing "typeof" (#74)

https://github.com/firebase/firebase-js-sdk/blob/fd0728138d88c454f8e38a78f35d831d6365070c/src/database/js-client/core/Repo.js#L86

* WIP: fixes from @schmidt-sebastian's review

* WIP: fix: TS Build error

* fix(database): fix issue with missing repo method

* WIP: review adjustments #1

* WIP: review comments #2

* WIP: refactor(database): Add migrated test harness [Part 3/3] (#71)

* refactor(database): add typescript implementation

* refactor(database): update build process to include database.ts

All integration tests pass at this point

* refactor(*): refactor environment builds to be based on separate .ts files

* WIP: patch database code in nodeJS

* refactor(database): classes for typescript database implementation (#55)

* refactor(database): classes for typescript database implementation

* refactor(database): requested changes & other improvements

* WIP: add the /tests/config dir to the .gitignore

* WIP: add test harness

* WIP: add query tests

There are some tests that have weird timing issues, and because of the polling nature of the
original implementation, we never caught the issue. These should be resolved when able

* WIP: add database.test.ts

* WIP: add node.test.ts

* WIP: add sortedmap.test.ts

* WIP: add datasnapshot.test.ts

* WIP: add sparsesnapshottree.test.ts

* refactor(database): refactor query.test.ts to better preserve original test meaning

* WIP: add crawler_support.test.ts

* WIP: refactor EventAccumulator.ts for data.test.ts

* WIP: fix issue with query.test.ts

* WIP: add connection.test.ts

* WIP: add info.test.ts

* WIP: add order_by.test.ts

I only migrated some of these tests as there was a dependency on the server for several tests

* WIP: fix several code signature problems, add test files

* WIP: add transaction.test.ts

* WIP: working on the broken npm test command

* WIP: working on fixes

* WIP: remove logging

* WIP: fix node tests

* fix(*): fixing test files and CI integration

* WIP: tEMP: Allow branch builds

* WIP: escape string

* refactor(CI): use ChromeHeadless launcher

* WIP: fixes from review.

* WIP: skip flakey test

* WIP: remove unneeded debugger statement

* WIP: fixing nits

* Prevent using uninitialized array in EventEmitter (#85)

* perf(*): fixing build size output issues

* chore(*): remove unneeded build deps

.gitignore

@@ -4,7 +4,8 @@
 npm-debug.log
 /coverage
 /.nyc_output
-/tests/integration/config
+/tests/config
 /temp
 /.vscode
+/.ts-node
 /.idea

.travis.yml

@@ -16,8 +16,6 @@ addons:
       - g++-4.8
 before_script:
   - "export DISPLAY=:99.0"
+  - "mkdir -p tests/config && echo \"$PROJECT_CONFIG\" > tests/config/project.json"
 script:
   - xvfb-run npm test
-branches:
-  only:
-    - master

gulp/config.js

@@ -17,9 +17,13 @@ const path = require('path');
 const cwd = process.cwd();
 const karma = require('karma');
 
-module.exports = {
+const configObj = {
   root: path.resolve(cwd),
   pkg: require(path.resolve(cwd, 'package.json')),
+  testConfig: {
+    timeout: 5000,
+    retries: 5
+  },
   tsconfig:  require(path.resolve(cwd, 'tsconfig.json')),
   tsconfigTest:  require(path.resolve(cwd, 'tsconfig.test.json')),
   paths: {
@@ -30,6 +34,7 @@ module.exports = {
         'tests/**/*.test.ts',
         '!tests/**/browser/**/*.test.ts',
         '!tests/**/binary/**/*.test.ts',
+        '!src/firebase-*.ts',
       ],
       binary: [
         'tests/**/binary/**/*.test.ts',
@@ -44,11 +49,10 @@ module.exports = {
   },
   babel: {
     plugins: [
-      require('babel-plugin-add-module-exports'),
-      require('babel-plugin-minify-dead-code-elimination')
+      'add-module-exports',
     ],
     presets: [
-      [require('babel-preset-env'), {
+      ['env', {
         "targets": {
           "browsers": [
             "ie >= 9"
@@ -103,7 +107,7 @@ module.exports = {
 
     // start these browsers
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-    browsers: ['Chrome', 'Firefox'],
+    browsers: ['ChromeHeadless', 'Firefox'],
 
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
@@ -116,6 +120,16 @@ module.exports = {
     // karma-typescript config
     karmaTypescriptConfig: {
       tsconfig: `./tsconfig.test.json`
+    },
+
+    // Stub for client config
+    client: {
+      mocha: {}
     }
   }
-};
+};
+
+configObj.karma.client.mocha.timeout = configObj.testConfig.timeout;
+configObj.karma.client.mocha.retries = configObj.testConfig.retries;
+
+module.exports = configObj;

gulp/tasks/build.js

@@ -42,7 +42,6 @@ const glob = require('glob');
 const fs = require('fs');
 const gzipSize = require('gzip-size');
 const WrapperPlugin = require('wrapper-webpack-plugin');
-const legacyBuild = require('./build.legacy');
 
 function cleanDist(dir) { 
   return function cleanDistDirectory(done) {
@@ -135,11 +134,12 @@ function compileIndvES2015ModulesToBrowser() {
       'firebase-app': './src/app.ts',
       'firebase-storage': './src/storage.ts',
       'firebase-messaging': './src/messaging.ts',
+      'firebase-database': './src/database.ts',
     },
     output: {
-      path: path.resolve(__dirname, './dist/browser'),
       filename: '[name].js',
-      jsonpFunction: 'webpackJsonpFirebase'
+      jsonpFunction: 'webpackJsonpFirebase',
+      path: path.resolve(__dirname, './dist/browser'),
     },
     module: {
       rules: [{
@@ -158,6 +158,7 @@ function compileIndvES2015ModulesToBrowser() {
       }]
     },
     plugins: [
+      new webpack.optimize.ModuleConcatenationPlugin(),
       new webpack.optimize.CommonsChunkPlugin({
         name: 'firebase-app'
       }),
@@ -193,27 +194,6 @@ function compileIndvES2015ModulesToBrowser() {
     .pipe(gulp.dest(`${config.paths.outDir}/browser`));
 }
 
-function compileSDKES2015ToBrowser() {
-  return gulp.src('./dist/es2015/firebase.js')
-    .pipe(webpackStream({
-      plugins: [
-        new webpack.DefinePlugin({
-          TARGET_ENVIRONMENT: JSON.stringify('browser')
-        })
-      ]
-    }, webpack))
-    .pipe(sourcemaps.init({ loadMaps: true }))
-    .pipe(through.obj(function(file, enc, cb) {
-      // Dont pipe through any source map files as it will be handled
-      // by gulp-sourcemaps
-      var isSourceMap = /\.map$/.test(file.path);
-      if (!isSourceMap) this.push(file);
-      cb();
-    }))
-    .pipe(sourcemaps.write('.'))
-    .pipe(gulp.dest(`${config.paths.outDir}/browser`));
-}
-
 function buildBrowserFirebaseJs() {
   return gulp.src('./dist/browser/*.js')
     .pipe(sourcemaps.init({ loadMaps: true }))
@@ -223,32 +203,18 @@ function buildBrowserFirebaseJs() {
 }
 
 function buildAltEnvFirebaseJs() {
-  const envs = [
-    'browser',
-    'node',
-    'react-native'
-  ];
-
-  const streams = envs.map(env => {
-    const babelConfig = Object.assign({}, config.babel, {
-      plugins: [
-        ['inline-replace-variables', {
-          'TARGET_ENVIRONMENT': env
-        }],
-        ...config.babel.plugins
-      ]
-    });
-    return gulp.src('./dist/es2015/firebase.js')
-      .pipe(sourcemaps.init({ loadMaps: true }))
-      .pipe(babel(babelConfig))
-      .pipe(rename({
-        suffix: `-${env}`
-      }))
-      .pipe(sourcemaps.write('.'))
-      .pipe(gulp.dest(`${config.paths.outDir}/cjs`));
+  const babelConfig = Object.assign({}, config.babel, {
+    plugins: config.babel.plugins
   });
-
-  return merge(streams);
+  return gulp.src([
+      './dist/es2015/firebase-browser.js',
+      './dist/es2015/firebase-node.js',
+      './dist/es2015/firebase-react-native.js',
+    ])
+    .pipe(sourcemaps.init({ loadMaps: true }))
+    .pipe(babel(babelConfig))
+    .pipe(sourcemaps.write('.'))
+    .pipe(gulp.dest(`${config.paths.outDir}/cjs`));
 }
 
 function copyPackageContents() {
@@ -429,7 +395,6 @@ gulp.task('build:cjs', gulp.parallel([
     gulp.parallel(compileES2015ToCJS, buildAltEnvFirebaseJs)
   ]),
   processPrebuiltFilesForCJS,
-  legacyBuild.compileDatabaseForCJS
 ]));
 
 gulp.task('process:prebuilt', gulp.parallel([
@@ -444,8 +409,6 @@ const compileSourceAssets = gulp.series([
   gulp.parallel([
     compileIndvES2015ModulesToBrowser, 
     compileES2015ToCJS,
-    legacyBuild.compileDatabaseForBrowser,
-    legacyBuild.compileDatabaseForCJS
   ])
 ]);
 
@@ -455,7 +418,6 @@ gulp.task('build:browser', gulp.series([
   gulp.parallel([
     compileSourceAssets,
     processPrebuiltFilesForBrowser,
-    legacyBuild.compileDatabaseForBrowser
   ]),
   buildBrowserFirebaseJs
 ]));

gulp/tasks/dev.js

@@ -17,19 +17,18 @@ const gulp = require('gulp');
 const config = require('../config');
 
 // Ensure that the test tasks get set up
-require('./test');
+const testFxns = require('./test');
 
 function watchDevFiles() {
   const stream = gulp.watch([
     `${config.root}/src/**/*.ts`,
-    config.paths.test.unit
-  ], gulp.parallel('test:unit'));
+    'tests/**/*.test.ts'
+  ], testFxns.runBrowserUnitTests(true));
 
-  stream.on('error', () => {});
+  stream.on('error', err => {});
   return stream;
 }
 
 gulp.task('dev', gulp.parallel([
-  'test:unit',
   watchDevFiles
 ]));