diff --git a/.babelrc b/.babelrc
new file mode 100644
index 000000000..4e053d362
--- /dev/null
+++ b/.babelrc
@@ -0,0 +1,8 @@
+{
+ "presets": [
+ "es2015",
+ "stage-1",
+ "react"
+ ],
+ "plugins": ["transform-decorators-legacy"]
+}
diff --git a/.gitmodules b/.gitmodules
index 8f0c54d42..9d6124d13 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -5,6 +5,7 @@
[submodule "submodules/oracles-combine-solidity"]
path = submodules/oracles-combine-solidity
url = https://github.com/oraclesorg/oracles-combine-solidity
+ branch = master
[submodule "submodules/oracles-web3-1.0"]
path = submodules/oracles-web3-1.0
url = https://github.com/oraclesorg/web3.js
diff --git a/build_scripts/build.js b/build_scripts/build.js
new file mode 100644
index 000000000..2d825390c
--- /dev/null
+++ b/build_scripts/build.js
@@ -0,0 +1,144 @@
+'use strict';
+
+// Do this as the first thing so that any code reading it knows the right env.
+process.env.BABEL_ENV = 'production';
+process.env.NODE_ENV = 'production';
+
+// Makes the script crash on unhandled rejections instead of silently
+// ignoring them. In the future, promise rejections that are not handled will
+// terminate the Node.js process with a non-zero exit code.
+process.on('unhandledRejection', err => {
+ throw err;
+});
+
+// Ensure environment variables are read.
+require('../config/env');
+
+const path = require('path');
+const chalk = require('chalk');
+const fs = require('fs-extra');
+const webpack = require('webpack');
+const config = require('../config/webpack.config.prod');
+const paths = require('../config/paths');
+const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
+const formatWebpackMessages = require('react-dev-utils/formatWebpackMessages');
+const printHostingInstructions = require('react-dev-utils/printHostingInstructions');
+const FileSizeReporter = require('react-dev-utils/FileSizeReporter');
+
+const measureFileSizesBeforeBuild =
+ FileSizeReporter.measureFileSizesBeforeBuild;
+const printFileSizesAfterBuild = FileSizeReporter.printFileSizesAfterBuild;
+const useYarn = fs.existsSync(paths.yarnLockFile);
+
+// These sizes are pretty large. We'll warn for bundles exceeding them.
+const WARN_AFTER_BUNDLE_GZIP_SIZE = 512 * 1024;
+const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024;
+
+// Warn and crash if required files are missing
+if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
+ process.exit(1);
+}
+
+// First, read the current file sizes in build directory.
+// This lets us display how much they changed later.
+measureFileSizesBeforeBuild(paths.appBuild)
+ .then(previousFileSizes => {
+ // Remove all content but keep the directory so that
+ // if you're in it, you don't end up in Trash
+ fs.emptyDirSync(paths.appBuild);
+ // Merge with the public folder
+ copyPublicFolder();
+ // Start the webpack build
+ return build(previousFileSizes);
+ })
+ .then(
+ ({ stats, previousFileSizes, warnings }) => {
+ if (warnings.length) {
+ console.log(chalk.yellow('Compiled with warnings.\n'));
+ console.log(warnings.join('\n\n'));
+ console.log(
+ '\nSearch for the ' +
+ chalk.underline(chalk.yellow('keywords')) +
+ ' to learn more about each warning.'
+ );
+ console.log(
+ 'To ignore, add ' +
+ chalk.cyan('// eslint-disable-next-line') +
+ ' to the line before.\n'
+ );
+ } else {
+ console.log(chalk.green('Compiled successfully.\n'));
+ }
+
+ console.log('File sizes after gzip:\n');
+ printFileSizesAfterBuild(
+ stats,
+ previousFileSizes,
+ paths.appBuild,
+ WARN_AFTER_BUNDLE_GZIP_SIZE,
+ WARN_AFTER_CHUNK_GZIP_SIZE
+ );
+ console.log();
+
+ const appPackage = require(paths.appPackageJson);
+ const publicUrl = paths.publicUrl;
+ const publicPath = config.output.publicPath;
+ const buildFolder = path.relative(process.cwd(), paths.appBuild);
+ printHostingInstructions(
+ appPackage,
+ publicUrl,
+ publicPath,
+ buildFolder,
+ useYarn
+ );
+ },
+ err => {
+ console.log(chalk.red('Failed to compile.\n'));
+ console.log((err.message || err) + '\n');
+ process.exit(1);
+ }
+ );
+
+// Create the production build and print the deployment instructions.
+function build(previousFileSizes) {
+ console.log('Creating an optimized production build...');
+
+ let compiler = webpack(config);
+ return new Promise((resolve, reject) => {
+ compiler.run((err, stats) => {
+ if (err) {
+ return reject(err);
+ }
+ const messages = formatWebpackMessages(stats.toJson({}, true));
+ if (messages.errors.length) {
+ return reject(new Error(messages.errors.join('\n\n')));
+ }
+ if (
+ process.env.CI &&
+ (typeof process.env.CI !== 'string' ||
+ process.env.CI.toLowerCase() !== 'false') &&
+ messages.warnings.length
+ ) {
+ console.log(
+ chalk.yellow(
+ '\nTreating warnings as errors because process.env.CI = true.\n' +
+ 'Most CI servers set it automatically.\n'
+ )
+ );
+ return reject(new Error(messages.warnings.join('\n\n')));
+ }
+ return resolve({
+ stats,
+ previousFileSizes,
+ warnings: messages.warnings,
+ });
+ });
+ });
+}
+
+function copyPublicFolder() {
+ fs.copySync(paths.appPublic, paths.appBuild, {
+ dereference: true,
+ filter: file => file !== paths.appHtml,
+ });
+}
diff --git a/build_scripts/start.js b/build_scripts/start.js
new file mode 100644
index 000000000..2686e7fd4
--- /dev/null
+++ b/build_scripts/start.js
@@ -0,0 +1,92 @@
+'use strict';
+
+// Do this as the first thing so that any code reading it knows the right env.
+process.env.BABEL_ENV = 'development';
+process.env.NODE_ENV = 'development';
+
+// Makes the script crash on unhandled rejections instead of silently
+// ignoring them. In the future, promise rejections that are not handled will
+// terminate the Node.js process with a non-zero exit code.
+process.on('unhandledRejection', err => {
+ throw err;
+});
+
+// Ensure environment variables are read.
+require('../config/env');
+
+const fs = require('fs');
+const chalk = require('chalk');
+const webpack = require('webpack');
+const WebpackDevServer = require('webpack-dev-server');
+const clearConsole = require('react-dev-utils/clearConsole');
+const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
+const {
+ choosePort,
+ createCompiler,
+ prepareProxy,
+ prepareUrls,
+} = require('react-dev-utils/WebpackDevServerUtils');
+const openBrowser = require('react-dev-utils/openBrowser');
+const paths = require('../config/paths');
+const config = require('../config/webpack.config.dev');
+const createDevServerConfig = require('../config/webpackDevServer.config');
+
+const useYarn = fs.existsSync(paths.yarnLockFile);
+const isInteractive = process.stdout.isTTY;
+
+// Warn and crash if required files are missing
+if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
+ process.exit(1);
+}
+
+// Tools like Cloud9 rely on this.
+const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
+const HOST = process.env.HOST || '0.0.0.0';
+
+// We attempt to use the default port but if it is busy, we offer the user to
+// run on a different port. `detect()` Promise resolves to the next free port.
+choosePort(HOST, DEFAULT_PORT)
+ .then(port => {
+ if (port == null) {
+ // We have not found a port.
+ return;
+ }
+ const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
+ const appName = require(paths.appPackageJson).name;
+ const urls = prepareUrls(protocol, HOST, port);
+ // Create a webpack compiler that is configured with custom messages.
+ const compiler = createCompiler(webpack, config, appName, urls, useYarn);
+ // Load proxy config
+ const proxySetting = require(paths.appPackageJson).proxy;
+ const proxyConfig = prepareProxy(proxySetting, paths.appPublic);
+ // Serve webpack assets generated by the compiler over a web sever.
+ const serverConfig = createDevServerConfig(
+ proxyConfig,
+ urls.lanUrlForConfig
+ );
+ const devServer = new WebpackDevServer(compiler, serverConfig);
+ // Launch WebpackDevServer.
+ devServer.listen(port, HOST, err => {
+ if (err) {
+ return console.log(err);
+ }
+ if (isInteractive) {
+ clearConsole();
+ }
+ console.log(chalk.cyan('Starting the development server...\n'));
+ openBrowser(urls.localUrlForBrowser);
+ });
+
+ ['SIGINT', 'SIGTERM'].forEach(function(sig) {
+ process.on(sig, function() {
+ devServer.close();
+ process.exit();
+ });
+ });
+ })
+ .catch(err => {
+ if (err && err.message) {
+ console.log(err.message);
+ }
+ process.exit(1);
+ });
diff --git a/build_scripts/test.js b/build_scripts/test.js
new file mode 100644
index 000000000..399bfd353
--- /dev/null
+++ b/build_scripts/test.js
@@ -0,0 +1,27 @@
+'use strict';
+
+// Do this as the first thing so that any code reading it knows the right env.
+process.env.BABEL_ENV = 'test';
+process.env.NODE_ENV = 'test';
+process.env.PUBLIC_URL = '';
+
+// Makes the script crash on unhandled rejections instead of silently
+// ignoring them. In the future, promise rejections that are not handled will
+// terminate the Node.js process with a non-zero exit code.
+process.on('unhandledRejection', err => {
+ throw err;
+});
+
+// Ensure environment variables are read.
+require('../config/env');
+
+const jest = require('jest');
+const argv = process.argv.slice(2);
+
+// Watch unless on CI or in coverage mode
+if (!process.env.CI && argv.indexOf('--coverage') < 0) {
+ argv.push('--watch');
+}
+
+
+jest.run(argv);
diff --git a/config/env.js b/config/env.js
new file mode 100644
index 000000000..8b39b6c63
--- /dev/null
+++ b/config/env.js
@@ -0,0 +1,90 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const paths = require('./paths');
+
+// Make sure that including paths.js after env.js will read .env variables.
+delete require.cache[require.resolve('./paths')];
+
+const NODE_ENV = process.env.NODE_ENV;
+if (!NODE_ENV) {
+ throw new Error(
+ 'The NODE_ENV environment variable is required but was not specified.'
+ );
+}
+
+// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
+var dotenvFiles = [
+ `${paths.dotenv}.${NODE_ENV}.local`,
+ `${paths.dotenv}.${NODE_ENV}`,
+ // Don't include `.env.local` for `test` environment
+ // since normally you expect tests to produce the same
+ // results for everyone
+ NODE_ENV !== 'test' && `${paths.dotenv}.local`,
+ paths.dotenv,
+].filter(Boolean);
+
+// Load environment variables from .env* files. Suppress warnings using silent
+// if this file is missing. dotenv will never modify any environment variables
+// that have already been set.
+// https://github.com/motdotla/dotenv
+dotenvFiles.forEach(dotenvFile => {
+ if (fs.existsSync(dotenvFile)) {
+ require('dotenv').config({
+ path: dotenvFile,
+ });
+ }
+});
+
+// We support resolving modules according to `NODE_PATH`.
+// This lets you use absolute paths in imports inside large monorepos:
+// https://github.com/facebookincubator/create-react-app/issues/253.
+// It works similar to `NODE_PATH` in Node itself:
+// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
+// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
+// Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
+// https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
+// We also resolve them to make sure all tools using them work consistently.
+const appDirectory = fs.realpathSync(process.cwd());
+process.env.NODE_PATH = (process.env.NODE_PATH || '')
+ .split(path.delimiter)
+ .filter(folder => folder && !path.isAbsolute(folder))
+ .map(folder => path.resolve(appDirectory, folder))
+ .join(path.delimiter);
+
+// Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be
+// injected into the application via DefinePlugin in Webpack configuration.
+const REACT_APP = /^REACT_APP_/i;
+
+function getClientEnvironment(publicUrl) {
+ const raw = Object.keys(process.env)
+ .filter(key => REACT_APP.test(key))
+ .reduce(
+ (env, key) => {
+ env[key] = process.env[key];
+ return env;
+ },
+ {
+ // Useful for determining whether we’re running in production mode.
+ // Most importantly, it switches React into the correct mode.
+ NODE_ENV: process.env.NODE_ENV || 'development',
+ // Useful for resolving the correct path to static assets in `public`.
+ // For example, .
+ // This should only be used as an escape hatch. Normally you would put
+ // images into the `src` and `import` them in code to get their paths.
+ PUBLIC_URL: publicUrl,
+ }
+ );
+ // Stringify all values so we can feed into Webpack DefinePlugin
+ const stringified = {
+ 'process.env': Object.keys(raw).reduce((env, key) => {
+ env[key] = JSON.stringify(raw[key]);
+ return env;
+ }, {}),
+ };
+
+ return { raw, stringified };
+}
+
+module.exports = getClientEnvironment;
diff --git a/config/jest/cssTransform.js b/config/jest/cssTransform.js
new file mode 100644
index 000000000..f1534f6fb
--- /dev/null
+++ b/config/jest/cssTransform.js
@@ -0,0 +1,14 @@
+'use strict';
+
+// This is a custom Jest transformer turning style imports into empty objects.
+// http://facebook.github.io/jest/docs/tutorial-webpack.html
+
+module.exports = {
+ process() {
+ return 'module.exports = {};';
+ },
+ getCacheKey() {
+ // The output is always the same.
+ return 'cssTransform';
+ },
+};
diff --git a/config/jest/fileTransform.js b/config/jest/fileTransform.js
new file mode 100644
index 000000000..ffce0da29
--- /dev/null
+++ b/config/jest/fileTransform.js
@@ -0,0 +1,12 @@
+'use strict';
+
+const path = require('path');
+
+// This is a custom Jest transformer turning file imports into filenames.
+// http://facebook.github.io/jest/docs/tutorial-webpack.html
+
+module.exports = {
+ process(src, filename) {
+ return `module.exports = ${JSON.stringify(path.basename(filename))};`;
+ },
+};
diff --git a/config/paths.js b/config/paths.js
new file mode 100644
index 000000000..6d16efc99
--- /dev/null
+++ b/config/paths.js
@@ -0,0 +1,55 @@
+'use strict';
+
+const path = require('path');
+const fs = require('fs');
+const url = require('url');
+
+// Make sure any symlinks in the project folder are resolved:
+// https://github.com/facebookincubator/create-react-app/issues/637
+const appDirectory = fs.realpathSync(process.cwd());
+const resolveApp = relativePath => path.resolve(appDirectory, relativePath);
+
+const envPublicUrl = process.env.PUBLIC_URL;
+
+function ensureSlash(path, needsSlash) {
+ const hasSlash = path.endsWith('/');
+ if (hasSlash && !needsSlash) {
+ return path.substr(path, path.length - 1);
+ } else if (!hasSlash && needsSlash) {
+ return `${path}/`;
+ } else {
+ return path;
+ }
+}
+
+const getPublicUrl = appPackageJson =>
+ envPublicUrl || require(appPackageJson).homepage;
+
+// We use `PUBLIC_URL` environment variable or "homepage" field to infer
+// "public path" at which the app is served.
+// Webpack needs to know it to put the right