Node.js v24 support

[chrisbloe-nhse]

Bug Report

What is the issue?

When building with Node.js v24, the following warning appears in the logs:

npm error code EBADENGINE
npm error engine Unsupported engine
npm error engine Not compatible with your version of node/npm: undefined
npm error notsup Not compatible with your version of node/npm: undefined
npm error notsup Required: {"node":"^20.9.0 || ^22.11.0"}
npm error notsup Actual: {"npm":"11.3.0","node":"v24.1.0"}

What steps are required to reproduce the issue?

Clone the repo
Using Node.js 24.1.0, run npm install

What was the environment where this issue occurred?

• NHS.UK frontend package version: 9.6.1
• Node version: 24.1.0
• npm version: 11.3.0

Is there anything else you think would be useful in recreating the issue?

Whilst not currently an LTS version (atow), v24 will become the next LTS, so it's understandable if v24 is not fully supported until it becomes LTS.

[colinrotherham]

Thanks @chrisbloe-nhse

We'll definitely be updating the supported versions to include Node.js 24 when it enters LTS

Similar warnings are shown for pre-LTS versions of Node.js 20 and 22 using "node":"^20.9.0 || ^22.11.0"

I'll put this issue in the backlog

[colinrotherham]

For context, earlier versions of Node.js brought lots of package export gotchas

• Node.js 12.18 uses package exports with trailing slashes
• Node.js 12.20 uses package exports with subpath patterns
• Node.js 17+ cannot use package exports with trailing slashes

We'll be adding side-by-side require and import entry points as part of:

• Add Gulp build output for CommonJS alongside ES modules #1352

We should take more care now module-sync landed and got rapidly backported

[colinrotherham]

Closed by #1673