Switch to Typescript (#10)

* Switch to Typescript

* Fix Review Issues

config-overrides.js

@@ -0,0 +1,32 @@
+const webpack = require("webpack");
+
+module.exports = function override(config) {
+  const fallback = config.resolve.fallback || {};
+  Object.assign(fallback, {
+    crypto: false, // require.resolve("crypto-browserify") can be polyfilled here if needed
+    stream: false, // require.resolve("stream-browserify") can be polyfilled here if needed
+    assert: false, // require.resolve("assert") can be polyfilled here if needed
+    http: false, // require.resolve("stream-http") can be polyfilled here if needed
+    https: false, // require.resolve("https-browserify") can be polyfilled here if needed
+    os: false, // require.resolve("os-browserify") can be polyfilled here if needed
+    url: false, // require.resolve("url") can be polyfilled here if needed
+    zlib: false, // require.resolve("browserify-zlib") can be polyfilled here if needed
+  });
+  config.resolve.fallback = fallback;
+  config.plugins = (config.plugins || []).concat([
+    new webpack.ProvidePlugin({
+      process: "process/browser",
+      Buffer: ["buffer", "Buffer"],
+    }),
+  ]);
+  config.ignoreWarnings = [/Failed to parse source map/];
+  config.module.rules.push({
+    test: /\.(js|mjs|jsx)$/,
+    enforce: "pre",
+    loader: require.resolve("source-map-loader"),
+    resolve: {
+      fullySpecified: false,
+    },
+  });
+  return config;
+};