Migrate to TypeScript (core)

[SteRiccio]

No description provided.

[Copilot]

Pull request overview

This PR introduces TypeScript support across the core package and updates the build/lint/test tooling so the repository can compile and typecheck .ts/.tsx alongside existing JavaScript.

Changes:

• Add TypeScript toolchain: tsconfig.json, TypeScript Babel preset, TypeScript-aware webpack resolution/rules, and a typecheck script.
• Migrate a set of core/* utilities/modules from .js to .ts, adding typings and tightening some APIs.
• Extend ESLint + lint-staged + test webpack config to include .ts/.tsx sources.

Reviewed changes

Copilot reviewed 67 out of 77 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
yarn.lock	Adds TypeScript, Babel TS preset, TS ESLint tooling, and type packages to the lockfile.
webpack.config.server.babel.js	Adds .ts/.tsx resolution and transpilation for server bundle.
webpack.config.babel.js	Adds .ts/.tsx resolution and transpilation for client bundle.
tsconfig.json	Introduces TS compiler settings (typecheck-only).
test/webpack.config.js	Extends test bundling to include .ts/.tsx tests and resolve extensions.
package.json	Adds typecheck script and TS-related dev dependencies; extends lint-staged globs.
global.d.ts	Declares module types for styles/images and a global constant.
eslint.config.js	Adds TypeScript parsing + rules, and extends existing configs to include .ts/.tsx.
core/uuid.ts	Adds TS version of uuid helpers.
core/uuid.js	Switches uuid helper to CommonJS export style.
core/user2FADevice/user2FADevice.ts	Migrates User2FADevice helpers to TypeScript.
core/user2FADevice/user2FADevice.js	Removes JS implementation (migrated to TS).
core/user2FADevice/index.ts	Adds TS barrel export for user2FADevice.
core/uniqueNameGenerator.ts	Adds TS annotations and refactors variable initialization.
core/systemError.ts	Adds TS typing for SystemError and makes StatusCodes as const.
core/stringUtils.ts	Migrates string utilities to TypeScript and adds typings.
core/stringUtils.js	Removes JS implementation (migrated to TS).
core/queue.ts	Migrates Queue to a typed generic implementation.
core/promiseUtils.ts	Migrates promise utilities to TypeScript.
core/promiseUtils.js	Removes JS implementation (migrated to TS).
core/processUtils.ts	Adds TS version of process/env utilities alongside existing JS version.
core/objectUtils.ts	Migrates object utilities to TypeScript.
core/objectUtils.js	Removes JS implementation (migrated to TS).
core/numberUtils.ts	Adds TS typing to numeric helpers.
core/numberConversionUtils.ts	Migrates number conversion helpers to TypeScript.
core/numberConversionUtils.js	Removes JS implementation (migrated to TS).
core/message/messageValidator.ts	Adds TS typing to message validation entrypoint.
core/markdownValidator.ts	Adds TS typing and explicit stack typing for marked token traversal.
core/markdownUtils.ts	Migrates markdown parsing/sanitization helper to TypeScript.
core/markdownUtils.js	Removes JS implementation (migrated to TS).
core/map/mapUtils.ts	Migrates map tile URL utilities to TypeScript.
core/map/mapUtils.js	Removes JS implementation (migrated to TS).
core/i18n/i18nFactory.ts	Adds TypeScript annotations and interop casts for i18next factory.
core/functionsDefer.ts	Migrates debounce/throttle utilities to TypeScript with typed timeout maps.
core/fileFormats.ts	Adds as const and typed accessor for extensions by file format.
core/dateUtils.ts	Migrates date utilities to TypeScript with typed i18n parameter for relative dates.
core/dateUtils.js	Removes JS implementation (migrated to TS).
core/dataImport/index.ts	Adds TS barrel export for data import types.
core/dataImport/dataImportTemplateTypes.ts	Adds as const typing to template type constants.
core/counter.ts	Migrates Counter to TypeScript.
core/counter.js	Removes JS implementation (migrated to TS).
core/auth/jwtConstants.ts	Adds TS constant for bearer prefix.
core/auth/authorizer.ts	Migrates authorizer logic to TypeScript with arena-core types.
core/auth/authorizer.js	Removes JS implementation (migrated to TS).
core/auth/authGroup.ts	Improves typing around auth groups and permissions mapping.
core/arrayUtils.ts	Migrates array utility module to TypeScript.
core/arrayUtils.js	Removes JS implementation (migrated to TS).
core/arena/stringify.ts	Adds typings and preserves stringify behavior with explicit null handling.
core/arena/set.ts	Adds typings to mutating set helper.
core/arena/propOr.ts	Adds typings and null-safe object handling.
core/arena/prop.ts	Adds typings for property access helper.
core/arena/pipe.ts	Migrates pipe helper to TypeScript.
core/arena/pipe.js	Removes JS implementation (migrated to TS).
core/arena/parse.ts	Adds typings and safer casts for Map/Set reviver behavior.
core/arena/omit.ts	Adds typings for omit helper and accumulator typing.
core/arena/isNull.ts	Adds typings for null/undefined check helper.
core/arena/isEmpty.ts	Adds typings and safe casts for collection emptiness checks.
core/arena/internal/_isPlaceholder.ts	Migrates placeholder detection to TypeScript.
core/arena/internal/_isPlaceholder.js	Removes JS implementation (migrated to TS).
core/arena/internal/_curry3.ts	Migrates internal curry helper to TypeScript.
core/arena/internal/_curry3.js	Removes JS implementation (migrated to TS).
core/arena/internal/_curry2.ts	Migrates internal curry helper to TypeScript.
core/arena/internal/_curry1.ts	Migrates internal curry helper to TypeScript.
core/arena/internal/_camelizePartial.ts	Migrates internal camelize logic to TypeScript with typed options.
core/arena/index.ts	Adds TS barrel exports for arena helper functions.
core/arena/identity.ts	Adds a generic-typed identity function.
core/arena/dissoc.ts	Adds typings for dissoc helper.
core/arena/camelizePartial.ts	Adds TS wrapper export for camelizePartial.
core/arena/camelize.ts	Adds typings for camelize helper.
core/arena/assoc.ts	Adds typings for assoc helper.
core/app/languages.ts	Adds typings for language label lookup and language lists.
core/app/appInfo.ts	Adds typings for app info helpers.
core/Countries/index.ts	Adds TS barrel export for Countries module.
core/Countries/Countries.ts	Migrates Countries module to TypeScript with typed JSON shape.
core/Countries/Countries.js	Removes JS implementation (migrated to TS).
babel.config.js	Adds @babel/preset-typescript and uses @babel/preset-react explicitly.

Comments suppressed due to low confidence (1)

core/uniqueNameGenerator.ts:25

• parseName(startingName) is invoked twice (once to get count, once to get nameWithoutCount). This is minor but unnecessary work and makes the flow harder to follow; consider destructuring both from a single call.

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