diff --git a/.github/README.md b/.github/README.md
index 9143b46..f35a775 100644
--- a/.github/README.md
+++ b/.github/README.md
@@ -4,6 +4,7 @@
 [![gzip size](https://badgen.net/bundlephobia/minzip/antiutils?color=green)](https://bundlephobia.com/result?p=antiutils)
 [![tree shaking](https://badgen.net/bundlephobia/tree-shaking/antiutils)](https://bundlephobia.com/result?p=antiutils)
 [![types](https://img.shields.io/npm/types/antiutils?color=brightgreen)](https://www.npmjs.com/package/antiutils)
+[![coverage status](https://coveralls.io/repos/github/ivan7237d/antiutils/badge.svg?branch=master)](https://coveralls.io/github/ivan7237d/antiutils?branch=master)
 
 TypeScript/JavaScript utilities for those who don't like utilities.
 
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..681d8ff
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,7 @@
+language: node_js
+node_js:
+  - '14'
+  - '15'
+script:
+  - yarn run coveralls
+cache: yarn
diff --git a/README.md b/README.md
index 95d47ed..39bcab3 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,14 @@
 <!-- README for NPM; the one for GitHub is in .github directory. -->
 
+<!-- The first 3 badges below are just to make NPM's scoring algorithm happy. -->
+
+[![npm version](https://img.shields.io/npm/v/antiutils.svg?style=flat&color=brightgreen)](https://www.npmjs.com/package/antiutils)
+[![license](https://img.shields.io/npm/l/antiutils.svg?color=brightgreen)](https://www.npmjs.com/package/antiutils)
+[![downloads](https://img.shields.io/npm/dt/antiutils.svg?color=brightgreen)](https://www.npmjs.com/package/antiutils)
 [![gzip size](https://badgen.net/bundlephobia/minzip/antiutils?color=green)](https://bundlephobia.com/result?p=antiutils)
 [![tree shaking](https://badgen.net/bundlephobia/tree-shaking/antiutils)](https://bundlephobia.com/result?p=antiutils)
 [![types](https://img.shields.io/npm/types/antiutils?color=brightgreen)](https://www.npmjs.com/package/antiutils)
+[![coverage status](https://coveralls.io/repos/github/ivan7237d/antiutils/badge.svg?branch=master)](https://coveralls.io/github/ivan7237d/antiutils?branch=master)
 
 TypeScript/JavaScript utilities for those who don't like utilities. Based on "only one way to do it" principle, this library provides a utility only when something can't be easily and readably accomplished with vanilla JavaScript. The library provides a pipeline operator ponyfill, functions for working with objects, arrays, maps, sets and iterables, memoization utilities, lenses, and more.
 
diff --git a/package.json b/package.json
index 5427cda..d9b5be2 100644
--- a/package.json
+++ b/package.json
@@ -47,10 +47,11 @@
     "reset-hard": "git clean -dfx && git reset --hard && yarn",
     "release:prepare": "run-s test doc:html version doc:publish",
     "release": "run-s release:prepare",
-    "commit": "cz"
+    "commit": "cz",
+    "coveralls": "jest --coverage && cat ./coverage/lcov.info | coveralls"
   },
   "engines": {
-    "node": ">=10"
+    "node": ">=14"
   },
   "dependencies": {},
   "devDependencies": {
@@ -60,6 +61,7 @@
     "@typescript-eslint/eslint-plugin": "4.0.1",
     "@typescript-eslint/parser": "4.0.1",
     "commitizen": "4.2.2",
+    "coveralls": "3.1.0",
     "cz-conventional-changelog": "3.3.0",
     "eslint": "7.8.0",
     "eslint-config-prettier": "6.11.0",
diff --git a/yarn.lock b/yarn.lock
index e2d5ea8..65dfb57 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2218,6 +2218,17 @@ cosmiconfig@^7.0.0:
     path-type "^4.0.0"
     yaml "^1.10.0"
 
+coveralls@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.1.0.tgz#13c754d5e7a2dd8b44fe5269e21ca394fb4d615b"
+  integrity sha512-sHxOu2ELzW8/NC1UP5XVLbZDzO4S3VxfFye3XYCznopHy02YjNkHcj5bKaVw2O7hVaBdBjEdQGpie4II1mWhuQ==
+  dependencies:
+    js-yaml "^3.13.1"
+    lcov-parse "^1.0.0"
+    log-driver "^1.2.7"
+    minimist "^1.2.5"
+    request "^2.88.2"
+
 cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
@@ -4415,6 +4426,11 @@ kleur@^3.0.3:
   resolved "https://registry.yarnpkg.com/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"
   integrity sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==
 
+lcov-parse@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/lcov-parse/-/lcov-parse-1.0.0.tgz#eb0d46b54111ebc561acb4c408ef9363bdc8f7e0"
+  integrity sha1-6w1GtUER68VhrLTECO+TY73I9+A=
+
 leven@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/leven/-/leven-3.1.0.tgz#77891de834064cccba82ae7842bb6b14a13ed7f2"
@@ -4535,6 +4551,11 @@ lodash@^4.17.12, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
   integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
 
+log-driver@^1.2.7:
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.7.tgz#63b95021f0702fedfa2c9bb0a24e7797d71871d8"
+  integrity sha512-U7KCmLdqsGHBLeWqYlFA0V0Sl6P08EE1ZrmA9cxjUE0WVqT9qnyVDPz1kzpFEP0jdJuFnasWIfSd7fsaNXkpbg==
+
 longest@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-2.0.1.tgz#781e183296aa94f6d4d916dc335d0d17aefa23f8"