Proposed change

Empty values in main fields on Forms Adapter v1 message are being clipped by JSON.stringify and JSON.parse. This ticket replaces the undefined value with null, to allow correct serialisation for theforms-notify-listener. This can them be turned back into undefined.

Jira ticket: https://eaflood.atlassian.net/browse/DF-512

Type of change

• Bug fix
• New feature
• Breaking change
• Misc. (documentation, build updates, etc)

Checklist

• You have executed this code locally and it performs as expected.
• You have added tests to verify your code works.
• You have added code comments and JSDoc, where appropriate.
• There is no commented-out code.
• You have added developer docs in README.md and docs/* (where appropriate, e.g. new features).
• The tests are passing (npm run test).
• The linting checks are passing (npm run lint).
• The code has been formatted (npm run format).