v5.0.0

Version 5 modernizes object-to-formdata while preserving the documented serialization API.

Highlights:

• Adds native ESM and CommonJS package entry points.
• Moves development, testing, and packaging to Bun.
• Improves Date, Blob, File, symbol, and circular-reference handling.
• Corrects file-array notation behavior for nested arrays and related options.
• Expands regression coverage and refreshes the npm documentation.

Breaking changes:

• The package export map blocks undocumented deep imports.
• File-array keys now follow the documented noAttributesWithArrayNotation and noFilesWithArrayNotation behavior.
• Structural Blob-like plain objects are traversed unless they pass native Blob brand checks.

Validation: 44 tests pass with 100% reported line and function coverage. The packed CommonJS and ESM entry points were verified under Node.js 22, 24, and 26.

v4.5.1

Adds coverage for using allowEmptyArrays with noAttributesWithArrayNotation. No runtime code changed from v4.5.0. Originally published to npm on May 12, 2023.

v4.5.0

Adds the noAttributesWithArrayNotation option and makes the package entry point explicit. Originally published to npm on May 12, 2023.

v4.4.2

Fixes serialization in environments without a global FormData when an existing FormData instance is supplied. Originally published to npm on February 12, 2022.