[Ashley Osuna (ashley-osuna)]

Description of the change

Description here

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation or Development tools (readme, specs, tests, code formatting)

Links

• Jira issue number: (PUT IT HERE)
• Process.st launch checklist: (PUT IT HERE)

Checklists

Development

• Prettier was run (if applicable)
• The behaviour changes in the pull request are covered by specs
• All tests related to the changed code pass in development

Paperwork

• This pull request has a descriptive title and information useful to a reviewer
• This pull request has a Jira number
• This pull request has a Process.st launch checklist

Code review

• Changes have been reviewed by at least one other engineer
• Security impacts of this change have been considered

[Copilot]

🟡 Changes recommended

Type-only imports are treated as runtime values in UserIdentityContext.ts and listeners.ts, causing module linking to fail under Node’s native TypeScript loader.

1 open issue

• Use type-only imports for type exports · New

What changed in this PR

Modernizes component-environment tooling and tests while tightening widget JWT subject matching.

Changes:

• Replaces Jest with Node’s test runner and a jsdom setup.
• Updates dependencies, supported Node versions, and TypeScript import handling.
• Anchors JWT subject patterns and restricts identifier characters.

File	Description
packages/​component-environment/​tsconfig.json	Enables relative import extension rewriting.
packages/​component-environment/​src/​listeners.ts	Adds explicit .ts import extensions.
packages/​component-environment/​src/​index.ts	Adds .ts extensions to public re-exports.
packages/​component-environment/​src/​history.ts	Updates local import extensions.
packages/​component-environment/​src/​fetchLocale.ts	Updates local import extensions.
packages/​component-environment/​src/​environment.ts	Marks type imports and adds an explicit extension.
packages/​component-environment/​src/​contexts/​UserIdentityContext.ts	Tightens JWT subject matching and updates imports.
packages/​component-environment/​src/​contexts/​ProgramContext.ts	Updates local import extensions.
packages/​component-environment/​src/​contexts/​LocaleContext.ts	Updates local import extensions.
packages/​component-environment/​package.json	Updates tooling, dependencies, Node support, and test command.
packages/​component-environment/​jest.config.ts	Removes obsolete Jest configuration.
packages/​component-environment/​__tests__/​validateLocale.spec.ts	Migrates locale tests to Node assertions and runner.
packages/​component-environment/​__tests__/​setup/​dom.ts	Provides browser globals through jsdom.
packages/​component-environment/​__tests__/​history.spec.ts	Migrates history tests and mocks to Node APIs.

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

No active review issues remain for the tooling modernization, test migration, and JWT subject-parsing changes.

No open issues 🎉

1 resolved since last review

• Use type-only imports for type exports

_{Review effort: Balanced}