fix(i18n): include locale assets in package builds

[bulunote]

Description

The built @plane/i18n package currently emits its JavaScript and declaration files without the JSON locale resources consumed by the runtime loader. In addition, the emitted loader resolves ../locales/..., which points outside the package's dist directory. Consumers that run against the packaged build can therefore fail to load non-English resources even though the source locale files exist.

This PR fixes the packaging boundary for every supported locale by:

• copying src/locales to dist/locales as part of the tsdown build;
• resolving dynamic resource imports from ./locales/... in the emitted entry;
• adding build-level regression tests that compare every source and built JSON asset and verify the emitted import path; and
• using the named createInstance import while touching the loader, which keeps the changed file lint-clean without changing behavior.

This is deliberately limited to the i18n package runtime and build output. It does not change translations, application UI copy, database content, or deployment configuration.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• Feature (non-breaking change which adds functionality)
• Improvement (change that would cause existing functionality to not work as expected)
• Code refactoring
• Performance improvements
• Documentation update

Screenshots and Media (if applicable)

Not applicable. This fixes package build output rather than a visual component.

Test Scenarios

• pnpm --filter @plane/i18n test
  • builds the package;
  • verifies all 532 locale JSON assets are present in dist/locales; and
  • verifies the emitted loader imports ./locales/${language}/${namespace}.json.
• pnpm --filter @plane/i18n check:types
• pnpm --filter @plane/i18n check:sync
  • all 19 locales contain the same 3,837 keys.
• Changed-file OxLint with --deny-warnings
• Changed-file oxfmt check
• pnpm turbo run build --filter=web --output-logs=errors-only
  • 11/11 tasks completed successfully.
• git diff --check

References

• Follow-up to the i18n architecture introduced in refactor(i18n): migrate packages/i18n from MobX to react-i18next #8898.
• Related to the localization tracking work in [feature]: Expand localization coverage for hardcoded UI surfaces #9089.

Summary by CodeRabbit

• Bug Fixes

  • Fixed locale loading in built packages so translated content is available at runtime.
  • Ensured locale assets are included and resolved correctly in production builds.

• Tests

  • Added automated checks confirming built locale files match source assets and dynamic loading works as expected.
  • Added a test command for building the package and running TypeScript tests.

[CLAassistant]

All committers have signed the CLA.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: f777a179-52e3-44aa-919a-335221500e69

📥 Commits

Reviewing files that changed from the base of the PR and between dd0379f and 02dd9d8.

📒 Files selected for processing (1)

• packages/i18n/scripts/tsconfig.json

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📝 Walkthrough

Walkthrough

The i18n package build copies locale assets and loads them from the bundled path. Tests compare source and built locale files and verify dynamic locale imports in the built entry.

Changes

i18n locale asset handling

Layer / File(s)	Summary
Bundle locale assets packages/i18n/tsdown.config.ts, packages/i18n/src/core/instance.ts	The build copies src/locales. The i18n instance uses createInstance and resolves locale JSON files from ./locales.
Validate locale bundle packages/i18n/package.json, packages/i18n/scripts/__tests__/locale-assets.test.ts, packages/i18n/scripts/tsconfig.json	The test script builds the package before running TypeScript tests. The tests compare source and built locale assets and verify dynamic locale imports. The test compiler includes ES2023 library definitions.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• makeplane/plane#9590: Both PRs modify the shared @plane/i18n runtime and its locale-loading setup.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely states that locale assets are included in i18n package builds.
Description check	✅ Passed	The description covers the required sections, explains the fix, identifies the change type, and lists detailed test scenarios.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@packages/i18n/scripts/__tests__/locale-assets.test.ts`:
- Around line 12-19: Update the scripts TypeScript configuration to include the
ES2023 library definition so listJsonAssets can use toSorted without type
errors; preserve the existing Node runtime configuration and implementation.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 83b0543f-7999-49d7-aaa4-1cb373ac137d

📥 Commits

Reviewing files that changed from the base of the PR and between 1c8a60f and dd0379f.

📒 Files selected for processing (4)

• packages/i18n/package.json
• packages/i18n/scripts/__tests__/locale-assets.test.ts
• packages/i18n/src/core/instance.ts
• packages/i18n/tsdown.config.ts