diff --git a/package.json b/package.json
index 9eea8f6ed..44f810b98 100644
--- a/package.json
+++ b/package.json
@@ -156,7 +156,7 @@
     "stacktrace-js": "^2.0.2",
     "stringz": "^2.1.0",
     "substring-trie": "^1.0.2",
-    "terser-webpack-plugin": "^2.3.5",
+    "terser-webpack-plugin": "^3.0.1",
     "tesseract.js": "^2.0.0-alpha.16",
     "throng": "^4.0.0",
     "tiny-queue": "^0.2.1",
diff --git a/yarn.lock b/yarn.lock
index 1845567c0..d3f9148ad 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2506,6 +2506,29 @@ cacache@^13.0.1:
     ssri "^7.0.0"
     unique-filename "^1.1.1"
 
+cacache@^15.0.3:
+  version "15.0.3"
+  resolved "https://registry.yarnpkg.com/cacache/-/cacache-15.0.3.tgz#2225c2d1dd8e872339950d6a39c051e0e9334392"
+  integrity sha512-bc3jKYjqv7k4pWh7I/ixIjfcjPul4V4jme/WbjvwGS5LzoPL/GzXr4C5EgPNLO/QEZl9Oi61iGitYEdwcrwLCQ==
+  dependencies:
+    chownr "^2.0.0"
+    fs-minipass "^2.0.0"
+    glob "^7.1.4"
+    infer-owner "^1.0.4"
+    lru-cache "^5.1.1"
+    minipass "^3.1.1"
+    minipass-collect "^1.0.2"
+    minipass-flush "^1.0.5"
+    minipass-pipeline "^1.2.2"
+    mkdirp "^1.0.3"
+    move-file "^2.0.0"
+    p-map "^4.0.0"
+    promise-inflight "^1.0.1"
+    rimraf "^3.0.2"
+    ssri "^8.0.0"
+    tar "^6.0.2"
+    unique-filename "^1.1.1"
+
 cache-base@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
@@ -2693,6 +2716,11 @@ chownr@^1.1.1, chownr@^1.1.2:
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
   integrity sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==
 
+chownr@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/chownr/-/chownr-2.0.0.tgz#15bfbe53d2eab4cf70f18a8cd68ebe5b3cb1dece"
+  integrity sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ==
+
 chrome-trace-event@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/chrome-trace-event/-/chrome-trace-event-1.0.2.tgz#234090ee97c7d4ad1a2c4beae27505deffc608a4"
@@ -4641,13 +4669,13 @@ find-cache-dir@^2.1.0:
     make-dir "^2.0.0"
     pkg-dir "^3.0.0"
 
-find-cache-dir@^3.0.0, find-cache-dir@^3.2.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/find-cache-dir/-/find-cache-dir-3.2.0.tgz#e7fe44c1abc1299f516146e563108fd1006c1874"
-  integrity sha512-1JKclkYYsf1q9WIJKLZa9S9muC+08RIjzAlLrK4QcYLJMS6mk9yombQ9qf+zJ7H9LS800k0s44L4sDq9VYzqyg==
+find-cache-dir@^3.0.0, find-cache-dir@^3.3.1:
+  version "3.3.1"
+  resolved "https://registry.yarnpkg.com/find-cache-dir/-/find-cache-dir-3.3.1.tgz#89b33fad4a4670daa94f855f7fbe31d6d84fe880"
+  integrity sha512-t2GDMt3oGC/v+BMwzmllWDuJF/xcDtE5j/fCGbqDD7OLuJkj0cfh1YSA5VKPvwMeLFLNDBkwOKZ2X85jGLVftQ==
   dependencies:
     commondir "^1.0.1"
-    make-dir "^3.0.0"
+    make-dir "^3.0.2"
     pkg-dir "^4.1.0"
 
 find-root@^1.1.0:
@@ -6473,7 +6501,7 @@ jest-watcher@^25.4.0:
     jest-util "^25.4.0"
     string-length "^3.1.0"
 
-jest-worker@^25.1.0, jest-worker@^25.4.0, jest-worker@^25.5.0:
+jest-worker@^25.4.0, jest-worker@^25.5.0:
   version "25.5.0"
   resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-25.5.0.tgz#2611d071b79cea0f43ee57a3d118593ac1547db1"
   integrity sha512-/dsSmUkIy5EBGfv/IjjqmFxrNAUpBERfGs1oHROyD7yxjG/w+t0GOJDX8O1k32ySmd7+a5IhnJU2qQFcJ4n1vw==
@@ -6481,6 +6509,14 @@ jest-worker@^25.1.0, jest-worker@^25.4.0, jest-worker@^25.5.0:
     merge-stream "^2.0.0"
     supports-color "^7.0.0"
 
+jest-worker@^26.0.0:
+  version "26.0.0"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-26.0.0.tgz#4920c7714f0a96c6412464718d0c58a3df3fb066"
+  integrity sha512-pPaYa2+JnwmiZjK9x7p9BoZht+47ecFCDFA/CJxspHzeDvQcfVBLWzCiWyo+EGrSiQMWZtCFo9iSvMZnAAo8vw==
+  dependencies:
+    merge-stream "^2.0.0"
+    supports-color "^7.0.0"
+
 jest@^25.4.0:
   version "25.4.0"
   resolved "https://registry.yarnpkg.com/jest/-/jest-25.4.0.tgz#fb96892c5c4e4a6b9bcb12068849cddf4c5f8cc7"
@@ -6890,7 +6926,7 @@ make-dir@^2.0.0:
     pify "^4.0.1"
     semver "^5.6.0"
 
-make-dir@^3.0.0:
+make-dir@^3.0.0, make-dir@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.1.0.tgz#415e967046b3a7f1d185277d84aa58203726a13f"
   integrity sha512-g3FeP20LNwhALb/6Cz6Dd4F2ngze0jz7tbzrD2wAV+o9FeNHe4rL+yK2md0J/fiSf1sa1ADhXqi5+oVwOM/eGw==
@@ -7131,6 +7167,14 @@ minipass@^3.0.0, minipass@^3.1.1:
   dependencies:
     yallist "^4.0.0"
 
+minizlib@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/minizlib/-/minizlib-2.1.0.tgz#fd52c645301ef09a63a2c209697c294c6ce02cf3"
+  integrity sha512-EzTZN/fjSvifSX0SlqUERCN39o6T40AMarPbv0MrarSFtIITCBh7bi+dU8nxGFHuqs9jdIAeoYoKuQAAASsPPA==
+  dependencies:
+    minipass "^3.0.0"
+    yallist "^4.0.0"
+
 mississippi@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/mississippi/-/mississippi-3.0.0.tgz#ea0a3291f97e0b5e8776b363d5f0a12d94c67022"
@@ -7162,7 +7206,7 @@ mkdirp@^0.5, mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@~0.5.1:
   dependencies:
     minimist "^1.2.5"
 
-mkdirp@^1.0.4:
+mkdirp@^1.0.3, mkdirp@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
   integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
@@ -7189,6 +7233,13 @@ move-concurrently@^1.0.1:
     rimraf "^2.5.4"
     run-queue "^1.0.3"
 
+move-file@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/move-file/-/move-file-2.0.0.tgz#83ffa309b5d7f69d518b28e1333e2ffadf331e3e"
+  integrity sha512-cdkdhNCgbP5dvS4tlGxZbD+nloio9GIimP57EjqFhwLcMjnU+XJKAZzlmg/TN/AK1LuNAdTSvm3CPPP4Xkv0iQ==
+  dependencies:
+    path-exists "^4.0.0"
+
 ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
@@ -7681,14 +7732,7 @@ p-limit@^1.1.0:
   dependencies:
     p-try "^1.0.0"
 
-p-limit@^2.0.0, p-limit@^2.2.1, p-limit@^2.2.2:
-  version "2.2.2"
-  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.2.2.tgz#61279b67721f5287aa1c13a9a7fbbc48c9291b1e"
-  integrity sha512-WGR+xHecKTr7EbUEhyLSh5Dube9JtdiG78ufaeLxTgpudf/20KqyMioIUZJAezlTIi6evxuoUs9YXc11cU+yzQ==
-  dependencies:
-    p-try "^2.0.0"
-
-p-limit@^2.2.0:
+p-limit@^2.0.0, p-limit@^2.2.0, p-limit@^2.2.1, p-limit@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.3.0.tgz#3dd33c647a214fdfffd835933eb086da0dc21db1"
   integrity sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==
@@ -7728,6 +7772,13 @@ p-map@^3.0.0:
   dependencies:
     aggregate-error "^3.0.0"
 
+p-map@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/p-map/-/p-map-4.0.0.tgz#bb2f95a5eda2ec168ec9274e06a747c3e2904d2b"
+  integrity sha512-/bjOqmgETBYB5BoEeGVea8dmvHb2m9GLy1E9W43yeyfP6QQCZGFNa+XRceJEuDB6zqr+gKpIAmlLebMpykw/MQ==
+  dependencies:
+    aggregate-error "^3.0.0"
+
 p-retry@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/p-retry/-/p-retry-3.0.1.tgz#316b4c8893e2c8dc1cfa891f406c4b422bebf328"
@@ -9631,7 +9682,7 @@ schema-utils@^1.0.0:
     ajv-errors "^1.0.0"
     ajv-keywords "^3.1.0"
 
-schema-utils@^2.2.0, schema-utils@^2.5.0, schema-utils@^2.6.0, schema-utils@^2.6.1, schema-utils@^2.6.4, schema-utils@^2.6.5:
+schema-utils@^2.2.0, schema-utils@^2.5.0, schema-utils@^2.6.0, schema-utils@^2.6.1, schema-utils@^2.6.5, schema-utils@^2.6.6:
   version "2.6.6"
   resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-2.6.6.tgz#299fe6bd4a3365dc23d99fd446caff8f1d6c330c"
   integrity sha512-wHutF/WPSbIi9x6ctjGGk2Hvl0VOz5l3EKEuKbjPlB30mKZUzb9A5k9yEXRX3pwyqVLPvpfZZEllaFq/M718hA==
@@ -9703,6 +9754,11 @@ serialize-javascript@^2.1.2:
   resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-2.1.2.tgz#ecec53b0e0317bdc95ef76ab7074b7384785fa61"
   integrity sha512-rs9OggEUF0V4jUSecXazOYsLfu7OGK2qIn3c7IPBiffz32XniEp/TX9Xmc9LQfK2nQ2QKHvZ2oygKUGU0lG4jQ==
 
+serialize-javascript@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-3.0.0.tgz#492e489a2d77b7b804ad391a5f5d97870952548e"
+  integrity sha512-skZcHYw2vEX4bw90nAr2iTTsz6x2SrHEnfxgKYmZlvJYBEZrvbKtobJWlQ20zczKb3bsHHXXTYt48zBA7ni9cw==
+
 serve-index@^1.9.1:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/serve-index/-/serve-index-1.9.1.tgz#d3768d69b1e7d82e5ce050fff5b453bea12a9239"
@@ -10063,6 +10119,13 @@ ssri@^7.0.0:
     figgy-pudding "^3.5.1"
     minipass "^3.1.1"
 
+ssri@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/ssri/-/ssri-8.0.0.tgz#79ca74e21f8ceaeddfcb4b90143c458b8d988808"
+  integrity sha512-aq/pz989nxVYwn16Tsbj1TqFpD5LLrQxHf5zaHuieFV+R0Bbr4y8qUsOA45hXT/N4/9UNXTarBjnjVmjSOVaAA==
+  dependencies:
+    minipass "^3.1.1"
+
 stable@^0.1.8:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/stable/-/stable-0.1.8.tgz#836eb3c8382fe2936feaf544631017ce7d47a3cf"
@@ -10445,6 +10508,18 @@ tapable@^1.0.0, tapable@^1.1.3:
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.1.3.tgz#a1fccc06b58db61fd7a45da2da44f5f3a3e67ba2"
   integrity sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==
 
+tar@^6.0.2:
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/tar/-/tar-6.0.2.tgz#5df17813468a6264ff14f766886c622b84ae2f39"
+  integrity sha512-Glo3jkRtPcvpDlAs/0+hozav78yoXKFr+c4wgw62NNMO3oo4AaJdCo21Uu7lcwr55h39W2XD1LMERc64wtbItg==
+  dependencies:
+    chownr "^2.0.0"
+    fs-minipass "^2.0.0"
+    minipass "^3.0.0"
+    minizlib "^2.1.0"
+    mkdirp "^1.0.3"
+    yallist "^4.0.0"
+
 tcomb@^2.5.0:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/tcomb/-/tcomb-2.7.0.tgz#10d62958041669a5d53567b9a4ee8cde22b1c2b0"
@@ -10473,22 +10548,22 @@ terser-webpack-plugin@^1.4.3:
     webpack-sources "^1.4.0"
     worker-farm "^1.7.0"
 
-terser-webpack-plugin@^2.3.5:
-  version "2.3.5"
-  resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-2.3.5.tgz#5ad971acce5c517440ba873ea4f09687de2f4a81"
-  integrity sha512-WlWksUoq+E4+JlJ+h+U+QUzXpcsMSSNXkDy9lBVkSqDn1w23Gg29L/ary9GeJVYCGiNJJX7LnVc4bwL1N3/g1w==
+terser-webpack-plugin@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-3.0.1.tgz#31928c9330a582fb5ec6f90805337289b85cb8fe"
+  integrity sha512-eFDtq8qPUEa9hXcUzTwKXTnugIVtlqc1Z/ZVhG8LmRT3lgRY13+pQTnFLY2N7ATB6TKCHuW/IGjoAnZz9wOIqw==
   dependencies:
-    cacache "^13.0.1"
-    find-cache-dir "^3.2.0"
-    jest-worker "^25.1.0"
-    p-limit "^2.2.2"
-    schema-utils "^2.6.4"
-    serialize-javascript "^2.1.2"
+    cacache "^15.0.3"
+    find-cache-dir "^3.3.1"
+    jest-worker "^26.0.0"
+    p-limit "^2.3.0"
+    schema-utils "^2.6.6"
+    serialize-javascript "^3.0.0"
     source-map "^0.6.1"
-    terser "^4.4.3"
+    terser "^4.6.13"
     webpack-sources "^1.4.3"
 
-terser@^4.1.2, terser@^4.4.3:
+terser@^4.1.2, terser@^4.6.13:
   version "4.6.13"
   resolved "https://registry.yarnpkg.com/terser/-/terser-4.6.13.tgz#e879a7364a5e0db52ba4891ecde007422c56a916"
   integrity sha512-wMvqukYgVpQlymbnNbabVZbtM6PN63AzqexpwJL8tbh/mRT9LE5o+ruVduAGL7D6Fpjl+Q+06U5I9Ul82odAhw==