Add to changelog

alphagov · Jun 20, 2022 · adffd54 · adffd54
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@@ -12,6 +12,18 @@ We've deprecated the `govuk-header__link--service-name` class, and will remove i
 
 This change was introduced in [pull request #2617: Do not make the service name in the header a link if no `serviceUrl` is provided](https://github.com/alphagov/govuk-frontend/pull/2617).
 
+#### File extensions added for JavaScript ES Module imports
+
+We have updated our component ES module JavaScript to include [missing file extensions](https://nodejs.org/api/esm.html#mandatory-file-extensions) not provided in release 4.1.0. If you have received an error similar to the one below, this fix should resolve the issue.
+
+```
+Cannot find module '../node_modules/govuk-frontend/govuk-esm/common' imported from ../node_modules/govuk-frontend/govuk-esm/all.mjs
+```
+
+You should not need to make any changes if you are successfully importing our JavaScript as ES modules with version 4.1.0, but there still might be config you can remove. For example, removing `fullySpecified: false` from your Webpack config file.
+
+This change was introduced in [pull request #2658: Add missing mandatory file extensions for ESM JavaScript](https://github.com/alphagov/govuk-frontend/pull/2658)
+
 ### Fixes
 
 We’ve made fixes to GOV.UK Frontend in the following pull requests: