v4.0.0

Breaking changes

• Requires Node.js 24 or higher.

What's new

Tooling & infrastructure

• Migrated from npm to pnpm
• Replaced XO linter with Biome
• Replaced AVA with the built-in Node.js test runner (node:test)
• Replaced c8 with native Node.js test coverage
• Replaced ts-node with native Node.js type stripping
• Modern TypeScript config (nodenext, ES2024, strict, declaration maps)
• Added Changesets for versioning
• Added autonomous npm release workflow with provenance
• Added Renovate for automated dependency updates
• Removed Travis CI, editorconfig, and del-cli

Code

• Replaced hasKey utility with Object.hasOwn() (#18)
• Added proper validation for NaN and Infinity amounts – now throws a TypeError instead of producing misleading error messages (closes #18)
• All errors now use TypeError where applicable
• Extracted parser regex to a named constant
• Removed parameter reassignment in convert()

Documentation

• Replaced currency.js example with built-in Intl.NumberFormat
• Updated floating point section to accurately describe the *100/100 trick and its limitations
• Added AI disclosure section
• Fixed incorrect link in big.js section (closes #25)
• Updated badges (removed XO, Bundlephobia; added CI from GitHub Actions)
• Switched funding from OpenCollective to GitHub Sponsors

Packaging

• Modern exports field with types condition
• Removed author field from package.json
• Updated license year

Full diff: 3.0.1...v4.0.0