Migrate from CommonJS to ESM (#6651)

lib/load-logos.js

@@ -1,13 +1,16 @@
-'use strict'
-
-const fs = require('fs')
-const path = require('path')
-const { svg2base64 } = require('./svg-helpers')
+import fs from 'fs'
+import path from 'path'
+import { fileURLToPath } from 'url'
+import { svg2base64 } from './svg-helpers.js'
 
 function loadLogos() {
   // Cache svg logos from disk in base64 string
   const logos = {}
-  const logoDir = path.join(__dirname, '..', 'logo')
+  const logoDir = path.join(
+    path.dirname(fileURLToPath(import.meta.url)),
+    '..',
+    'logo'
+  )
   const logoFiles = fs.readdirSync(logoDir)
   logoFiles.forEach(filename => {
     if (filename[0] === '.') {
@@ -30,4 +33,4 @@ function loadLogos() {
   return logos
 }
 
-module.exports = loadLogos
+export default loadLogos

lib/load-simple-icons.js

@@ -1,7 +1,5 @@
-'use strict'
-
-const originalSimpleIcons = require('simple-icons')
-const { svg2base64 } = require('./svg-helpers')
+import originalSimpleIcons from 'simple-icons'
+import { svg2base64 } from './svg-helpers.js'
 
 function loadSimpleIcons() {
   const simpleIcons = {}
@@ -40,4 +38,4 @@ function loadSimpleIcons() {
   return simpleIcons
 }
 
-module.exports = loadSimpleIcons
+export default loadSimpleIcons

lib/load-simple-icons.spec.js

@@ -1,7 +1,5 @@
-'use strict'
-
-const { expect } = require('chai')
-const loadSimpleIcons = require('./load-simple-icons')
+import { expect } from 'chai'
+import loadSimpleIcons from './load-simple-icons.js'
 
 describe('loadSimpleIcons', function () {
   let simpleIcons

lib/logos.js

@@ -1,15 +1,15 @@
-'use strict'
-
-const Joi = require('joi')
-const {
+import Joi from 'joi'
+import {
   toSvgColor,
   brightness,
   normalizeColor,
-} = require('../badge-maker/lib/color')
-const coalesce = require('../core/base-service/coalesce')
-const { svg2base64 } = require('./svg-helpers')
-const logos = require('./load-logos')()
-const simpleIcons = require('./load-simple-icons')()
+} from '../badge-maker/lib/color.js'
+import coalesce from '../core/base-service/coalesce.js'
+import { svg2base64 } from './svg-helpers.js'
+import loadLogos from './load-logos.js'
+import loadSimpleIcons from './load-simple-icons.js'
+const logos = loadLogos()
+const simpleIcons = loadSimpleIcons()
 
 // for backwards-compatibility with deleted logos
 const logoAliases = {
@@ -131,7 +131,7 @@ function makeLogo(defaultNamedLogo, overrides) {
   }
 }
 
-module.exports = {
+export {
   prependPrefix,
   isDataUrl,
   decodeDataUrlFromQueryParam,

lib/logos.spec.js

@@ -1,14 +1,12 @@
-'use strict'
-
-const { expect } = require('chai')
-const { test, given, forCases } = require('sazerac')
-const {
+import { expect } from 'chai'
+import { test, given, forCases } from 'sazerac'
+import {
   prependPrefix,
   isDataUrl,
   prepareNamedLogo,
   getSimpleIcon,
   makeLogo,
-} = require('./logos')
+} from './logos.js'
 
 describe('Logo helpers', function () {
   test(prependPrefix, () => {

lib/svg-helpers.js

@@ -1,7 +1,5 @@
-'use strict'
-
 function svg2base64(svg) {
   return `data:image/svg+xml;base64,${Buffer.from(svg).toString('base64')}`
 }
 
-module.exports = { svg2base64 }
+export { svg2base64 }

lib/svg-helpers.spec.js

@@ -1,7 +1,5 @@
-'use strict'
-
-const { test, given } = require('sazerac')
-const { svg2base64 } = require('./svg-helpers')
+import { test, given } from 'sazerac'
+import { svg2base64 } from './svg-helpers.js'
 
 describe('SVG helpers', function () {
   test(svg2base64, () => {