Migrate from CommonJS to ESM

.circleci/config.yml

@@ -236,7 +236,7 @@ jobs:
 
   e2e:
     docker:
-      - image: cypress/base:14
+      - image: cypress/base:14.16.0
     steps:
       - checkout
 

.eslintignore

@@ -2,6 +2,6 @@
 /build
 /coverage
 /__snapshots__
-/public
+public
 badge-maker/node_modules/
 !.github/

.eslintrc.yml

@@ -136,7 +136,6 @@ rules:
   # Shields additions.
   no-var: 'error'
   prefer-const: 'error'
-  strict: 'error'
   arrow-body-style: ['error', 'as-needed']
   no-extension-in-require/main: 'error'
   object-shorthand: ['error', 'properties']

.gitignore

@@ -104,7 +104,8 @@ service-definitions.yml
 !/config/local*.template.yml
 
 # Gatsby
-/.cache
+/frontend/.cache
+/frontend/public
 /public
 
 # Cypress

.mocharc-frontend.yml

@@ -3,4 +3,3 @@ require:
   - '@babel/polyfill'
   - '@babel/register'
   - mocha-yaml-loader
-  - frontend/mocha-ignore-pngs

.prettierignore

@@ -2,10 +2,10 @@ package.json
 package-lock.json
 /__snapshots__
 /.next
-/.cache
+.cache
 /api-docs
 /build
-/public
+public
 /coverage
 private/*.json
 /.nyc_output

core/badge-urls/make-badge-url.js

@@ -1,8 +1,7 @@
-'use strict'
-
-const { URL } = require('url')
-const queryString = require('query-string')
-const { compile } = require('path-to-regexp')
+// Avoid "Attempted import error: 'URL' is not exported from 'url'" in frontend.
+import url from 'url'
+import queryString from 'query-string'
+import { compile } from 'path-to-regexp'
 
 function badgeUrlFromPath({
   baseUrl = '',
@@ -147,13 +146,13 @@ function dynamicBadgeUrl({
 function rasterRedirectUrl({ rasterUrl }, badgeUrl) {
   // Ensure we're always using the `rasterUrl` by using just the path from
   // the request URL.
-  const { pathname, search } = new URL(badgeUrl, 'https://bogus.test')
-  const result = new URL(pathname, rasterUrl)
+  const { pathname, search } = new url.URL(badgeUrl, 'https://bogus.test')
+  const result = new url.URL(pathname, rasterUrl)
   result.search = search
   return result
 }
 
-module.exports = {
+export {
   badgeUrlFromPath,
   badgeUrlFromPattern,
   encodeField,

core/badge-urls/make-badge-url.spec.js

@@ -1,14 +1,12 @@
-'use strict'
-
-const { test, given } = require('sazerac')
-const {
+import { test, given } from 'sazerac'
+import {
   badgeUrlFromPath,
   badgeUrlFromPattern,
   encodeField,
   staticBadgeUrl,
   queryStringStaticBadgeUrl,
   dynamicBadgeUrl,
-} = require('./make-badge-url')
+} from './make-badge-url.js'
 
 describe('Badge URL generation functions', function () {
   test(badgeUrlFromPath, () => {

core/badge-urls/path-helpers.js

@@ -1,5 +1,3 @@
-'use strict'
-
 // Escapes `t` using the format specified in
 // <https://github.com/espadrine/gh-badges/issues/12#issuecomment-31518129>
 function escapeFormat(t) {
@@ -13,6 +11,4 @@ function escapeFormat(t) {
   )
 }
 
-module.exports = {
-  escapeFormat,
-}
+export { escapeFormat }

core/badge-urls/path-helpers.spec.js

@@ -1,7 +1,5 @@
-'use strict'
-
-const { test, given } = require('sazerac')
-const { escapeFormat } = require('./path-helpers')
+import { test, given } from 'sazerac'
+import { escapeFormat } from './path-helpers.js'
 
 describe('Badge URL helper functions', function () {
   test(escapeFormat, () => {

core/base-service/auth-helper.js

@@ -1,7 +1,5 @@
-'use strict'
-
-const { URL } = require('url')
-const { InvalidParameter } = require('./errors')
+import { URL } from 'url'
+import { InvalidParameter } from './errors.js'
 
 class AuthHelper {
   constructor(
@@ -207,4 +205,4 @@ class AuthHelper {
   }
 }
 
-module.exports = { AuthHelper }
+export { AuthHelper }

core/base-service/auth-helper.spec.js

@@ -1,9 +1,7 @@
-'use strict'
-
-const { expect } = require('chai')
-const { test, given, forCases } = require('sazerac')
-const { AuthHelper } = require('./auth-helper')
-const { InvalidParameter } = require('./errors')
+import { expect } from 'chai'
+import { test, given, forCases } from 'sazerac'
+import { AuthHelper } from './auth-helper.js'
+import { InvalidParameter } from './errors.js'
 
 describe('AuthHelper', function () {
   describe('constructor checks', function () {

core/base-service/base-graphql.js

@@ -2,12 +2,10 @@
  * @module
  */
 
-'use strict'
-
-const { print } = require('graphql/language/printer')
-const BaseService = require('./base')
-const { InvalidResponse, ShieldsRuntimeError } = require('./errors')
-const { parseJson } = require('./json')
+import { print } from 'graphql/language/printer.js'
+import BaseService from './base.js'
+import { InvalidResponse, ShieldsRuntimeError } from './errors.js'
+import { parseJson } from './json.js'
 
 function defaultTransformErrors(errors) {
   return new InvalidResponse({ prettyMessage: errors[0].message })
@@ -93,4 +91,4 @@ class BaseGraphqlService extends BaseService {
   }
 }
 
-module.exports = BaseGraphqlService
+export default BaseGraphqlService

core/base-service/base-graphql.spec.js

@@ -1,11 +1,9 @@
-'use strict'
-
-const Joi = require('joi')
-const { expect } = require('chai')
-const gql = require('graphql-tag')
-const sinon = require('sinon')
-const BaseGraphqlService = require('./base-graphql')
-const { InvalidResponse } = require('./errors')
+import Joi from 'joi'
+import { expect } from 'chai'
+import gql from 'graphql-tag'
+import sinon from 'sinon'
+import BaseGraphqlService from './base-graphql.js'
+import { InvalidResponse } from './errors.js'
 
 const dummySchema = Joi.object({
   requiredString: Joi.string().required(),

core/base-service/base-json.js

@@ -2,10 +2,8 @@
  * @module
  */
 
-'use strict'
-
-const BaseService = require('./base')
-const { parseJson } = require('./json')
+import BaseService from './base.js'
+import { parseJson } from './json.js'
 
 /**
  * Services which query a JSON endpoint should extend BaseJsonService
@@ -54,4 +52,4 @@ class BaseJsonService extends BaseService {
   }
 }
 
-module.exports = BaseJsonService
+export default BaseJsonService

core/base-service/base-json.spec.js

@@ -1,9 +1,7 @@
-'use strict'
-
-const Joi = require('joi')
-const { expect } = require('chai')
-const sinon = require('sinon')
-const BaseJsonService = require('./base-json')
+import Joi from 'joi'
+import { expect } from 'chai'
+import sinon from 'sinon'
+import BaseJsonService from './base-json.js'
 
 const dummySchema = Joi.object({
   requiredString: Joi.string().required(),

core/base-service/base-static.js

@@ -1,17 +1,15 @@
-'use strict'
-
-const makeBadge = require('../../badge-maker/lib/make-badge')
-const BaseService = require('./base')
-const {
+import makeBadge from '../../badge-maker/lib/make-badge.js'
+import BaseService from './base.js'
+import {
   serverHasBeenUpSinceResourceCached,
   setCacheHeadersForStaticResource,
-} = require('./cache-headers')
-const { makeSend } = require('./legacy-result-sender')
-const { MetricHelper } = require('./metric-helper')
-const coalesceBadge = require('./coalesce-badge')
-const { prepareRoute, namedParamsForMatch } = require('./route')
+} from './cache-headers.js'
+import { makeSend } from './legacy-result-sender.js'
+import { MetricHelper } from './metric-helper.js'
+import coalesceBadge from './coalesce-badge.js'
+import { prepareRoute, namedParamsForMatch } from './route.js'
 
-module.exports = class BaseStaticService extends BaseService {
+export default class BaseStaticService extends BaseService {
   static register({ camp, metricInstance }, serviceConfig) {
     const { regex, captureNames } = prepareRoute(this.route)
 

core/base-service/base-svg-scraping.js

@@ -2,13 +2,11 @@
  * @module
  */
 
-'use strict'
-
 // See available emoji at http://emoji.muan.co/
-const emojic = require('emojic')
-const BaseService = require('./base')
-const trace = require('./trace')
-const { InvalidResponse } = require('./errors')
+import emojic from 'emojic'
+import BaseService from './base.js'
+import trace from './trace.js'
+import { InvalidResponse } from './errors.js'
 
 const defaultValueMatcher = />([^<>]+)<\/text><\/g>/
 const leadingWhitespace = /(?:\r\n\s*|\r\s*|\n\s*)/g
@@ -90,4 +88,4 @@ class BaseSvgScrapingService extends BaseService {
   }
 }
 
-module.exports = BaseSvgScrapingService
+export default BaseSvgScrapingService

core/base-service/base-svg-scraping.spec.js

@@ -1,10 +1,8 @@
-'use strict'
-
-const { expect } = require('chai')
-const sinon = require('sinon')
-const Joi = require('joi')
-const makeBadge = require('../../badge-maker/lib/make-badge')
-const BaseSvgScrapingService = require('./base-svg-scraping')
+import { expect } from 'chai'
+import sinon from 'sinon'
+import Joi from 'joi'
+import makeBadge from '../../badge-maker/lib/make-badge.js'
+import BaseSvgScrapingService from './base-svg-scraping.js'
 
 const schema = Joi.object({
   message: Joi.string().required(),

core/base-service/base-xml.js

@@ -2,14 +2,12 @@
  * @module
  */
 
-'use strict'
-
 // See available emoji at http://emoji.muan.co/
-const emojic = require('emojic')
-const fastXmlParser = require('fast-xml-parser')
-const BaseService = require('./base')
-const trace = require('./trace')
-const { InvalidResponse } = require('./errors')
+import emojic from 'emojic'
+import fastXmlParser from 'fast-xml-parser'
+import BaseService from './base.js'
+import trace from './trace.js'
+import { InvalidResponse } from './errors.js'
 
 /**
  * Services which query a XML endpoint should extend BaseXmlService
@@ -68,4 +66,4 @@ class BaseXmlService extends BaseService {
   }
 }
 
-module.exports = BaseXmlService
+export default BaseXmlService

core/base-service/base-xml.spec.js

@@ -1,9 +1,7 @@
-'use strict'
-
-const Joi = require('joi')
-const { expect } = require('chai')
-const sinon = require('sinon')
-const BaseXmlService = require('./base-xml')
+import Joi from 'joi'
+import { expect } from 'chai'
+import sinon from 'sinon'
+import BaseXmlService from './base-xml.js'
 
 const dummySchema = Joi.object({
   requiredString: Joi.string().required(),

core/base-service/base-yaml.js

@@ -2,13 +2,11 @@
  * @module
  */
 
-'use strict'
-
-const emojic = require('emojic')
-const yaml = require('js-yaml')
-const BaseService = require('./base')
-const { InvalidResponse } = require('./errors')
-const trace = require('./trace')
+import emojic from 'emojic'
+import yaml from 'js-yaml'
+import BaseService from './base.js'
+import { InvalidResponse } from './errors.js'
+import trace from './trace.js'
 
 /**
  * Services which query a YAML endpoint should extend BaseYamlService
@@ -72,4 +70,4 @@ class BaseYamlService extends BaseService {
   }
 }
 
-module.exports = BaseYamlService
+export default BaseYamlService

core/base-service/base-yaml.spec.js

@@ -1,9 +1,7 @@
-'use strict'
-
-const Joi = require('joi')
-const { expect } = require('chai')
-const sinon = require('sinon')
-const BaseYamlService = require('./base-yaml')
+import Joi from 'joi'
+import { expect } from 'chai'
+import sinon from 'sinon'
+import BaseYamlService from './base-yaml.js'
 
 const dummySchema = Joi.object({
   requiredString: Joi.string().required(),