[frontend] Update to ESM (#14044)

[xfournet]

Proposed changes

• Update frontend to ESM

Related issues

• Fix Update frontend to ESM #14044

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

[Copilot]

Pull request overview

This pull request migrates the frontend codebase from CommonJS to ECMAScript Modules (ESM). The migration involves updating package.json to declare the module type, converting all require/module.exports statements to import/export syntax, and updating file references in configuration files.

Changes:

• Added "type": "module" to package.json files to enable ESM
• Converted all script files from CommonJS require/module.exports to ESM import/export syntax
• Updated builder files (dev.js, prod.js, esbuild-relay.js) to use ESM imports
• Updated ESLint plugin files to use ESM exports
• Renamed vite.config.mts to vite.config.ts and updated references
• Updated eslint.config.js reference from .mjs to .js extension

Reviewed changes

Copilot reviewed 16 out of 18 changed files in this pull request and generated 28 comments.

Show a summary per file

File	Description
opencti-platform/opencti-front/package.json	Added "type": "module" field and updated eslint.config reference from .mjs to .js
opencti-platform/opencti-front/vite.config.ts	New Vite configuration file with ESM syntax (converted from .mts)
opencti-platform/opencti-front/tsconfig.node.json	Updated reference from vite.config.mts to vite.config.ts
opencti-platform/opencti-front/eslint.config.js	Updated vite.config reference from .mts to .ts
opencti-platform/opencti-front/script/verify-translation.js	Converted from CommonJS to ESM with top-level await
opencti-platform/opencti-front/script/sort-translation-files.js	Converted from CommonJS to ESM with async/await pattern
opencti-platform/opencti-front/script/extract-label-keyword.js	Converted from CommonJS to ESM with top-level await
opencti-platform/opencti-front/script/extract-i18n-keyword.js	Converted from CommonJS to ESM with top-level await
opencti-platform/opencti-front/script/auto-translate.js	Converted from CommonJS to ESM with top-level await
opencti-platform/opencti-front/builder/prod/prod.js	Converted builder script to use ESM imports
opencti-platform/opencti-front/builder/dev/dev.js	Converted dev server to use ESM imports
opencti-platform/opencti-front/builder/plugin/esbuild-relay.js	Converted plugin imports to ESM (partial conversion)
opencti-platform/opencti-front/packages/eslint-plugin-custom-rules/package.json	Added "type": "module" to enable ESM
opencti-platform/opencti-front/packages/eslint-plugin-custom-rules/lib/index.js	Converted to ESM export syntax
opencti-platform/opencti-front/packages/eslint-plugin-custom-rules/lib/rules/classes-rule.js	Converted to ESM export default syntax
opencti-platform/opencti-front/packages/eslint-plugin-custom-rules/tests/lib/rules/classes-rule.test.js	Converted to ESM import syntax
.github/copilot-instructions.md	Updated documentation references from .mjs to .js

Comments suppressed due to low confidence (1)

opencti-platform/opencti-front/script/extract-i18n-keyword.js:37

• Avoid automated semicolon insertion (90% of all statements in the enclosing function have an explicit semicolon).

            })

[Copilot]

Missing semicolon at the end of the statement. For consistency with the rest of the codebase, add a semicolon after the closing brace.

[Copilot]

Pull request overview

Copilot reviewed 16 out of 18 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (3)

opencti-platform/opencti-front/script/sort-translation-files.js:22

• The code references fs.writeFileSync but fs is not imported. The file imports readFile and readdir from 'node:fs/promises' but needs to also import writeFile to use the async API consistently. Change fs.writeFileSync(...) to await writeFile(...) and update the import statement to include writeFile.

    fs.writeFileSync(filePath, JSON.stringify(sortedJSON, null, 2));

opencti-platform/opencti-front/eslint.config.js:66

• The custom-rules plugin export structure appears incorrect. ESLint plugins should export an object with a rules property, but here you're wrapping the imported customRules (which should already be the rules object) in another object with a rules property. Based on the updated lib/index.js which exports a plain object mapping rule names to rule implementations, this line should be 'custom-rules': customRules instead.
  opencti-platform/opencti-front/script/extract-i18n-keyword.js:37
• Avoid automated semicolon insertion (90% of all statements in the enclosing function have an explicit semicolon).

            })

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 32.36%. Comparing base (39a8539) to head (2fb397a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #14045   +/-   ##
=======================================
  Coverage   32.36%   32.36%           
=======================================
  Files        3096     3096           
  Lines      210891   210891           
  Branches    38200    38200           
=======================================
  Hits        68263    68263           
  Misses     142628   142628           

Flag	Coverage Δ
opencti-client-python	45.50% <ø> (ø)
opencti-front	2.83% <ø> (ø)
opencti-graphql	67.73% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.