diff --git a/__snapshots__/make-badge.spec.mjs.js b/__snapshots__/make-badge.spec.js
similarity index 100%
rename from __snapshots__/make-badge.spec.mjs.js
rename to __snapshots__/make-badge.spec.js
diff --git a/badge-maker/README.md b/badge-maker/README.md
index 1f0d712c51a7f..b9bf6993b7b60 100644
--- a/badge-maker/README.md
+++ b/badge-maker/README.md
@@ -21,14 +21,6 @@ badge build passed :brightgreen > mybadge.svg
 
 ### As a library
 
-With CommonJS in JavaScript,
-
-```js
-const { makeBadge, ValidationError } = require('badge-maker')
-```
-
-With ESM or TypeScript,
-
 ```ts
 import { makeBadge, ValidationError } from 'badge-maker'
 ```
diff --git a/badge-maker/lib/badge-cli.js b/badge-maker/lib/badge-cli.js
index a930a01e4c867..ecfef4e4369bb 100755
--- a/badge-maker/lib/badge-cli.js
+++ b/badge-maker/lib/badge-cli.js
@@ -1,9 +1,7 @@
 #!/usr/bin/env node
 
-'use strict'
-
-const { namedColors } = require('./color')
-const { makeBadge } = require('./index')
+import { namedColors } from './color.js'
+import { makeBadge } from './index.js'
 
 if (process.argv.length < 4) {
   console.log('Usage: badge label message [:color] [@style]')
diff --git a/badge-maker/lib/badge-cli.spec.mjs b/badge-maker/lib/badge-cli.spec.js
similarity index 100%
rename from badge-maker/lib/badge-cli.spec.mjs
rename to badge-maker/lib/badge-cli.spec.js
diff --git a/badge-maker/lib/badge-renderers.js b/badge-maker/lib/badge-renderers.js
index 60d9f08890d47..79ce329cac7ea 100644
--- a/badge-maker/lib/badge-renderers.js
+++ b/badge-maker/lib/badge-renderers.js
@@ -1,8 +1,8 @@
 'use strict'
 
-const anafanafo = require('anafanafo')
-const { brightness } = require('./color')
-const { XmlElement, ElementList } = require('./xml')
+import anafanafo from 'anafanafo'
+import { brightness } from './color.js'
+import { XmlElement, ElementList } from './xml.js'
 
 // https://github.com/badges/shields/pull/1132
 const FONT_SCALE_UP_FACTOR = 10
@@ -984,7 +984,7 @@ function forTheBadge({
   )
 }
 
-module.exports = {
+export default {
   plastic: params => Plastic.render(params),
   flat: params => Flat.render(params),
   'flat-square': params => FlatSquare.render(params),
diff --git a/badge-maker/lib/color.js b/badge-maker/lib/color.js
index 3ea1454b7c251..4ae55aebbd10c 100644
--- a/badge-maker/lib/color.js
+++ b/badge-maker/lib/color.js
@@ -1,9 +1,9 @@
 'use strict'
 
-const { fromString } = require('css-color-converter')
+import { fromString } from 'css-color-converter'
 
 // When updating these, be sure also to update the list in `badge-maker/README.md`.
-const namedColors = {
+export const namedColors = {
   brightgreen: '#4c1',
   green: '#97ca00',
   yellow: '#dfb317',
@@ -33,7 +33,7 @@ Object.entries(aliases).forEach(([alias, original]) => {
 // This function returns false for `#ccc`. However `isCSSColor('#ccc')` is
 // true.
 const hexColorRegex = /^([\da-f]{3}){1,2}$/i
-function isHexColor(s = '') {
+export function isHexColor(s = '') {
   return hexColorRegex.test(s)
 }
 
@@ -41,7 +41,7 @@ function isCSSColor(color) {
   return typeof color === 'string' && fromString(color.trim())
 }
 
-function normalizeColor(color) {
+export function normalizeColor(color) {
   if (color === undefined) {
     return undefined
   } else if (color in namedColors) {
@@ -57,7 +57,7 @@ function normalizeColor(color) {
   }
 }
 
-function toSvgColor(color) {
+export function toSvgColor(color) {
   const normalized = normalizeColor(color)
   if (normalized in namedColors) {
     return namedColors[normalized]
@@ -68,7 +68,7 @@ function toSvgColor(color) {
   }
 }
 
-function brightness(color) {
+export function brightness(color) {
   if (color) {
     const cssColor = fromString(color)
     if (cssColor) {
@@ -78,11 +78,3 @@ function brightness(color) {
   }
   return 0
 }
-
-module.exports = {
-  namedColors,
-  isHexColor,
-  normalizeColor,
-  toSvgColor,
-  brightness,
-}
diff --git a/badge-maker/lib/color.spec.js b/badge-maker/lib/color.spec.js
index 502765b4755dc..10570fe2a6325 100644
--- a/badge-maker/lib/color.spec.js
+++ b/badge-maker/lib/color.spec.js
@@ -1,12 +1,7 @@
 'use strict'
 
-const { test, given, forCases } = require('sazerac')
-const {
-  isHexColor,
-  normalizeColor,
-  toSvgColor,
-  brightness,
-} = require('./color')
+import { test, given, forCases } from 'sazerac'
+import { isHexColor, normalizeColor, toSvgColor, brightness } from './color.js'
 
 test(isHexColor, () => {
   forCases([given('f00bae'), given('4c1'), given('ABC123')]).expect(true)
diff --git a/badge-maker/lib/constants.js b/badge-maker/lib/constants.js
index 82f8b1d301ab5..6119380f6b946 100644
--- a/badge-maker/lib/constants.js
+++ b/badge-maker/lib/constants.js
@@ -1,5 +1 @@
-const DEFAULT_LOGO_HEIGHT = 14
-
-module.exports = {
-  DEFAULT_LOGO_HEIGHT,
-}
+export const DEFAULT_LOGO_HEIGHT = 14
diff --git a/badge-maker/lib/index.js b/badge-maker/lib/index.js
index 881188f411051..53ad208f56168 100644
--- a/badge-maker/lib/index.js
+++ b/badge-maker/lib/index.js
@@ -3,9 +3,9 @@
  * @module badge-maker
  */
 
-const _makeBadge = require('./make-badge')
+import _makeBadge from './make-badge.js'
 
-class ValidationError extends Error {}
+export class ValidationError extends Error {}
 
 function _validate(format) {
   if (format !== Object(format)) {
@@ -105,13 +105,8 @@ function _clean(format) {
  * @returns {string} Badge in SVG format
  * @see https://github.com/badges/shields/tree/master/badge-maker/README.md
  */
-function makeBadge(format) {
+export function makeBadge(format) {
   _validate(format)
   const cleanedFormat = _clean(format)
   return _makeBadge(cleanedFormat)
 }
-
-module.exports = {
-  makeBadge,
-  ValidationError,
-}
diff --git a/badge-maker/lib/index.spec.mjs b/badge-maker/lib/index.spec.js
similarity index 100%
rename from badge-maker/lib/index.spec.mjs
rename to badge-maker/lib/index.spec.js
diff --git a/badge-maker/lib/make-badge.js b/badge-maker/lib/make-badge.js
index 7119670d47ce0..a02400c2ea068 100644
--- a/badge-maker/lib/make-badge.js
+++ b/badge-maker/lib/make-badge.js
@@ -1,15 +1,13 @@
-'use strict'
-
-const { normalizeColor, toSvgColor } = require('./color')
-const badgeRenderers = require('./badge-renderers')
-const { stripXmlWhitespace } = require('./xml')
-const { DEFAULT_LOGO_HEIGHT } = require('./constants')
+import { normalizeColor, toSvgColor } from './color.js'
+import badgeRenderers from './badge-renderers.js'
+import { stripXmlWhitespace } from './xml.js'
+import { DEFAULT_LOGO_HEIGHT } from './constants.js'
 
 /*
 note: makeBadge() is fairly thinly wrapped so if we are making changes here
 it is likely this will impact on the package's public interface in index.js
 */
-module.exports = function makeBadge({
+export default function makeBadge({
   format,
   style = 'flat',
   label,
diff --git a/badge-maker/lib/make-badge.spec.mjs b/badge-maker/lib/make-badge.spec.js
similarity index 100%
rename from badge-maker/lib/make-badge.spec.mjs
rename to badge-maker/lib/make-badge.spec.js
diff --git a/badge-maker/lib/xml.js b/badge-maker/lib/xml.js
index 10b8a8994415c..2bc0f5462bd85 100644
--- a/badge-maker/lib/xml.js
+++ b/badge-maker/lib/xml.js
@@ -2,13 +2,11 @@
  * @module
  */
 
-'use strict'
-
-function stripXmlWhitespace(xml) {
+export function stripXmlWhitespace(xml) {
   return xml.replace(/>\s+/g, '>').replace(/<\s+/g, '<').trim()
 }
 
-function escapeXml(s) {
+export function escapeXml(s) {
   if (typeof s === 'number') {
     return s
   } else if (s === undefined || typeof s !== 'string') {
@@ -26,7 +24,7 @@ function escapeXml(s) {
 /**
  * Representation of an XML element
  */
-class XmlElement {
+export class XmlElement {
   /**
    * Xml Element Constructor
    *
@@ -77,7 +75,7 @@ class XmlElement {
  * Convenience class. Sometimes it is useful to return an object that behaves
  * like an XmlElement but renders multiple XML tags (not wrapped in a <g>).
  */
-class ElementList {
+export class ElementList {
   constructor({ content = [] }) {
     this.content = content
   }
@@ -92,5 +90,3 @@ class ElementList {
     )
   }
 }
-
-module.exports = { escapeXml, stripXmlWhitespace, XmlElement, ElementList }
diff --git a/badge-maker/lib/xml.spec.js b/badge-maker/lib/xml.spec.js
index 78ea84bada11c..a54e6a6d10cab 100644
--- a/badge-maker/lib/xml.spec.js
+++ b/badge-maker/lib/xml.spec.js
@@ -1,7 +1,5 @@
-'use strict'
-
-const { test, given } = require('sazerac')
-const { XmlElement } = require('./xml')
+import { test, given } from 'sazerac'
+import { XmlElement } from './xml.js'
 
 function testRender(params) {
   return new XmlElement(params).render()
diff --git a/badge-maker/package.json b/badge-maker/package.json
index 1401d836ff443..b138c0af07c69 100644
--- a/badge-maker/package.json
+++ b/badge-maker/package.json
@@ -1,6 +1,8 @@
 {
   "name": "badge-maker",
   "version": "4.1.0",
+  "type": "module",
+  "exports": "./lib/index.js",
   "description": "Shields.io badge library",
   "keywords": [
     "GitHub",
@@ -10,7 +12,6 @@
     "shields.io"
   ],
   "types": "index.d.ts",
-  "main": "lib/index.js",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/badges/shields.git",