diff --git a/frontend_tests/zjsunit/index.js b/frontend_tests/zjsunit/index.js
index 058e5b559c..2830020542 100644
--- a/frontend_tests/zjsunit/index.js
+++ b/frontend_tests/zjsunit/index.js
@@ -1,19 +1,16 @@
-require('ts-node').register({
-    project: 'static/js/tsconfig.json',
-    compilerOptions: {
-        typeRoots: ["node_modules/@types", "./js_typings"],
-        // We don't have webpack to handle es6 modules here so directly
-        // transpile to CommonJS format.
-        module: "commonjs",
-    },
-});
-
 var path = require('path');
 var fs = require('fs');
+var escapeRegExp = require("lodash/escapeRegExp");
+
+require("@babel/register")({
+    extensions: [".es6", ".es", ".jsx", ".js", ".mjs", ".ts"],
+    only: [
+        new RegExp("^" + escapeRegExp(path.resolve(__dirname, "../../static/js")) + path.sep),
+    ],
+    plugins: ["rewire-ts"],
+});
 
 global.assert = require('assert');
-require('core-js/features/string/code-point-at');
-
 global._ = require('underscore/underscore.js');
 var _ = global._;
 const windowObj = {
diff --git a/package.json b/package.json
index d99c5c1595..604818124b 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
     "@babel/plugin-proposal-class-properties": "^7.5.5",
     "@babel/preset-env": "^7.5.5",
     "@babel/preset-typescript": "^7.3.3",
+    "@babel/register": "^7.6.2",
     "@types/node": "^12.0.7",
     "@types/underscore": "^1.8.18",
     "@types/webpack": "^4.4.32",
@@ -60,7 +61,6 @@
     "style-loader": "^1.0.0",
     "terser-webpack-plugin": "^2.1.0",
     "to-markdown": "^3.1.0",
-    "ts-node": "^8.4.1",
     "typescript": "^3.5.1",
     "underscore": "^1.9.1",
     "webfonts-loader": "^5.0.0",
@@ -75,6 +75,7 @@
     "@types/source-map": "0.5.2",
     "@typescript-eslint/eslint-plugin": "^1.12.0",
     "@typescript-eslint/parser": "^1.12.0",
+    "babel-plugin-rewire-ts": "^1.3.3",
     "casperjs": "casperjs/casperjs",
     "difflib": "^0.2.4",
     "eslint": "^6.0.1",
diff --git a/tools/webpack.config.ts b/tools/webpack.config.ts
index 280229dff8..7af1e7aa15 100644
--- a/tools/webpack.config.ts
+++ b/tools/webpack.config.ts
@@ -1,14 +1,14 @@
 import { basename, resolve } from 'path';
-import * as BundleTracker from 'webpack-bundle-tracker';
-import * as webpack from 'webpack';
+import BundleTracker from 'webpack-bundle-tracker';
+import webpack from 'webpack';
 // The devServer member of webpack.Configuration is managed by the
 // webpack-dev-server package. We are only importing the type here.
-import * as _webpackDevServer from 'webpack-dev-server';
+import _webpackDevServer from 'webpack-dev-server';
 import { getExposeLoaders, cacheLoader } from './webpack-helpers';
-import * as MiniCssExtractPlugin from 'mini-css-extract-plugin';
-import * as OptimizeCssAssetsPlugin from 'optimize-css-assets-webpack-plugin';
-import * as CleanCss from 'clean-css';
-import * as TerserPlugin from 'terser-webpack-plugin';
+import MiniCssExtractPlugin from 'mini-css-extract-plugin';
+import OptimizeCssAssetsPlugin from 'optimize-css-assets-webpack-plugin';
+import CleanCss from 'clean-css';
+import TerserPlugin from 'terser-webpack-plugin';
 
 const assets = require('./webpack.assets.json');
 
diff --git a/version.py b/version.py
index c2438fb966..e3f337d2af 100644
--- a/version.py
+++ b/version.py
@@ -26,4 +26,4 @@ LATEST_RELEASE_ANNOUNCEMENT = "https://blog.zulip.org/2019/03/01/zulip-2-0-relea
 #   historical commits sharing the same major version, in which case a
 #   minor version bump suffices.
 
-PROVISION_VERSION = '58.2'
+PROVISION_VERSION = '59.0'
diff --git a/yarn.lock b/yarn.lock
index 3239a578b9..4f8cfac047 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -658,6 +658,17 @@
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-transform-typescript" "^7.6.0"
 
+"@babel/register@^7.6.2":
+  version "7.6.2"
+  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.6.2.tgz#25765a922202cb06f8bdac5a3b1e70cd6bf3dd45"
+  integrity sha512-xgZk2LRZvt6i2SAUWxc7ellk4+OYRgS3Zpsnr13nMS1Qo25w21Uu8o6vTOAqNaxiqrnv30KTYzh9YWY2k21CeQ==
+  dependencies:
+    find-cache-dir "^2.0.0"
+    lodash "^4.17.13"
+    mkdirp "^0.5.1"
+    pirates "^4.0.0"
+    source-map-support "^0.5.9"
+
 "@babel/runtime@^7.3.1":
   version "7.6.0"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.6.0.tgz#4fc1d642a9fd0299754e8b5de62c631cf5568205"
@@ -1479,11 +1490,6 @@ are-we-there-yet@~1.1.2:
     delegates "^1.0.0"
     readable-stream "^2.0.6"
 
-arg@^4.1.0:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.1.tgz#485f8e7c390ce4c5f78257dbea80d4be11feda4c"
-  integrity sha512-SlmP3fEA88MBv0PypnXZ8ZfJhwmDeIE3SP71j37AiXQBXYosPV0x6uISAaHYSlSVhmHOVkomen0tbGk6Anlebw==
-
 argparse@^1.0.6, argparse@^1.0.7:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
@@ -1694,6 +1700,11 @@ babel-plugin-dynamic-import-node@^2.3.0:
   dependencies:
     object.assign "^4.1.0"
 
+babel-plugin-rewire-ts@^1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-rewire-ts/-/babel-plugin-rewire-ts-1.3.3.tgz#84d5f65c622e39bd9cf289f3245e49406cd64eb3"
+  integrity sha512-bCIfrhk/kHRRobofYnhGEUDmroZq/RxJ6d98M+9a1Ef70PhD0wgQUqizVQhTpT51dmx1GwPS9PXBE3sX1TUJDQ==
+
 bail@^1.0.0:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/bail/-/bail-1.0.4.tgz#7181b66d508aa3055d3f6c13f0a0c720641dde9b"
@@ -3407,11 +3418,6 @@ detect-node@^2.0.4:
   resolved "https://registry.yarnpkg.com/detect-node/-/detect-node-2.0.4.tgz#014ee8f8f669c5c58023da64b8179c083a28c46c"
   integrity sha512-ZIzRpLJrOj7jjP2miAtgqIfmzbxa4ZOr5jJc601zklsfEx9oTzmmj2nVpIPRpNlRTIh8lc1kyViIY7BWSGNmKw==
 
-diff@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.1.tgz#0c667cb467ebbb5cea7f14f135cc2dba7780a8ff"
-  integrity sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q==
-
 diffie-hellman@^5.0.0:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
@@ -6749,11 +6755,6 @@ make-dir@^3.0.0:
   dependencies:
     semver "^6.0.0"
 
-make-error@^1.1.1:
-  version "1.3.5"
-  resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.5.tgz#efe4e81f6db28cadd605c70f29c831b58ef776c8"
-  integrity sha512-c3sIjNUow0+8swNwVpqoH4YCShKNFkMaw6oH1mNS2haDZQqkeZFlHS3dhoeEbKKmJB4vXpJucU6oH75aDYeE9g==
-
 mamacro@^0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/mamacro/-/mamacro-0.0.3.tgz#ad2c9576197c9f1abf308d0787865bd975a3f3e4"
@@ -7477,6 +7478,11 @@ node-libs-browser@^2.2.1:
     util "^0.11.0"
     vm-browserify "^1.0.1"
 
+node-modules-regexp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz#8d9dbe28964a4ac5712e9131642107c71e90ec40"
+  integrity sha1-jZ2+KJZKSsVxLpExZCEHxx6Q7EA=
+
 node-pre-gyp@^0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.12.0.tgz#39ba4bb1439da030295f899e3b520b7785766149"
@@ -8258,6 +8264,13 @@ pinkie@^2.0.0:
   resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
   integrity sha1-clVrgM+g1IqXToDnckjoDtT3+HA=
 
+pirates@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.1.tgz#643a92caf894566f91b2b986d2c66950a8e2fb87"
+  integrity sha512-WuNqLTbMI3tmfef2TKxlQmAiLHKtFhlsCZnPIpuv2Ow0RDVO8lfy1Opf4NUzlMXLjPl+Men7AuVdX6TA+s+uGA==
+  dependencies:
+    node-modules-regexp "^1.0.0"
+
 pkg-dir@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-3.0.0.tgz#2749020f239ed990881b1f71210d51eb6523bea3"
@@ -10196,7 +10209,7 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@^0.5.6, source-map-support@~0.5.12:
+source-map-support@^0.5.9, source-map-support@~0.5.12:
   version "0.5.13"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.13.tgz#31b24a9c2e73c2de85066c0feb7d44767ed52932"
   integrity sha512-SHSKFHadjVA5oR4PPqhtAVdcBWwRYVd6g6cAXnIbRiIwc2EhPrTuKUBdSLvlEKyIP3GCf89fltvcZiP9MMFA1w==
@@ -11239,17 +11252,6 @@ trough@^1.0.0:
   resolved "https://registry.yarnpkg.com/trough/-/trough-1.0.4.tgz#3b52b1f13924f460c3fbfd0df69b587dbcbc762e"
   integrity sha512-tdzBRDGWcI1OpPVmChbdSKhvSVurznZ8X36AYURAcl+0o2ldlCY2XPzyXNNxwJwwyIU+rIglTCG4kxtNKBQH7Q==
 
-ts-node@^8.4.1:
-  version "8.4.1"
-  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.4.1.tgz#270b0dba16e8723c9fa4f9b4775d3810fd994b4f"
-  integrity sha512-5LpRN+mTiCs7lI5EtbXmF/HfMeCjzt7DH9CZwtkr6SywStrNQC723wG+aOWFiLNn7zT3kD/RnFqi3ZUfr4l5Qw==
-  dependencies:
-    arg "^4.1.0"
-    diff "^4.0.1"
-    make-error "^1.1.1"
-    source-map-support "^0.5.6"
-    yn "^3.0.0"
-
 tslib@^1.8.1, tslib@^1.9.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
@@ -12366,11 +12368,6 @@ yauzl@2.4.1:
   dependencies:
     fd-slicer "~1.0.1"
 
-yn@^3.0.0:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"
-  integrity sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==
-
 z-schema-errors@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/z-schema-errors/-/z-schema-errors-0.0.1.tgz#e06270a4ca43925729f25764789ca9f46bff0f7d"