Migrated fee_bump_transaction.js file to TS

[quietbits]

TransactionBuilder is needed for the tests, so they will be migrated in a separate PR: #923

[github-actions]

Size Change: -54 B (0%)

Total Size: 3.61 MB

Filename	Size	Change
dist/stellar-base.js	2.66 MB	-47 B (0%)
dist/stellar-base.min.js	948 kB	-7 B (0%)

_{compressed-size-action}

[Copilot]

Pull request overview

This PR migrates src/fee_bump_transaction.js to TypeScript (src/fee_bump_transaction.ts), adding type annotations, updating import extensions to .js (as required for ESM compatibility), and adding proper override keywords required by noImplicitOverride. It also includes the auto-generated type_validation/fee_bump_transaction.d.ts declaration file, consistent with how other migrated files are handled. The test migration for this file is deferred to a separate PR (#923) because TransactionBuilder (a dependency) is not yet migrated.

Changes:

• Updated imports to use .js extensions for ESM compatibility
• Added TypeScript type annotations to the class, constructor, fields, and method signatures; replaced incorrect new xdr.Union.arm(...) calls with the correct static factory call pattern xdr.Union.arm(...)
• Added auto-generated type_validation/fee_bump_transaction.d.ts declaration file

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
src/fee_bump_transaction.ts	TypeScript migration: type annotations, .js import extensions, override keywords, type assertions, and fixed XDR union factory call style
type_validation/fee_bump_transaction.d.ts	Auto-generated declaration file from tsc compilation, reflecting the typed source

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.