Bump npm-check-updates from 19.6.6 to 21.0.0

[dependabot]

Bumps npm-check-updates from 19.6.6 to 21.0.0.

Release notes

Sourced from npm-check-updates's releases.

v21.0.0

⚠️ Breaking Changes

This is a major breaking change with significant architectural updates.

ESM Migration & Module System

• Pure ESM: Converted to pure ESM with dual-build support (ESM/CJS) via Vite 8.
• Import Syntax: Programmatic usage now requires named imports or namespace imports.
  • Old: import ncu from 'npm-check-updates'
  • New: import * as ncu from 'npm-check-updates' or import { run } from 'npm-check-updates'
• Node.js Requirements: Now requires ^20.19.0 || ^22.12.0 || >=24.0.0. This is required for native require(esm) support and the Rolldown engine.
• npm Requirements: Minimum version increased to >=10.0.0.

Configuration Files (.ncurc.js)

• Files named .ncurc.js that use module.exports will now fail in projects that are not "type": "module".
• Fix: Rename these files to .ncurc.cjs or convert them to use export default.

Dependency Updates (Pure ESM versions)

Package	Old Version	New Version
camelcase	^6.3.0	^9.0.0
chai	^4.3.10	^6.2.2
chai-as-promised	^7.1.2	^8.0.2
find-up	5.0.0	8.0.0
p-map	^4.0.0	^7.0.4
untildify	^4.0.0	^6.0.0

Tooling & Build Changes

• Vite 8 Upgrade: Migrated to Vite 8 with the new Rust-based Rolldown bundler (10-30x faster builds).
• TypeScript 6.0: Adopted latest type-system features and performance improvements.
• Strip ANSI: Replaced strip-ansi with Node.js built-in util.stripVTControlCharacters.
• Test Runner: Replaced vite-node with tsx for TypeScript support in ESM context.

---

Migration Guide

If you are upgrading to v21 from earlier versions:

1. Environment Check

• Ensure you meet the new Node.js requirement: ^20.19.0 || ^22.12.0 || >=24.0.0.
• Update npm to at least 10.0.0.

2. Update Configuration Files

... (truncated)

Changelog

Sourced from npm-check-updates's changelog.

[21.0.0] - 2026-04-14

⚠️ Breaking Changes

This is a major breaking change with significant architectural updates.

ESM Migration & Module System

• Pure ESM: Converted to pure ESM with dual-build support (ESM/CJS) via Vite 8.
• Import Syntax: Programmatic usage now requires named imports or namespace imports.
  • Old: import ncu from 'npm-check-updates'
  • New: import * as ncu from 'npm-check-updates' or import { run } from 'npm-check-updates'
• Node.js Requirements: Now requires ^20.19.0 || ^22.12.0 || >=24.0.0. This is required for native require(esm) support and the Rolldown engine.
• npm Requirements: Minimum version increased to >=10.0.0.

Configuration Files (.ncurc.js)

• Files named .ncurc.js that use module.exports will now fail in projects that are not "type": "module".
• Fix: Rename these files to .ncurc.cjs or convert them to use export default.

Dependency Updates (Pure ESM versions)

Package	Old Version	New Version
camelcase	^6.3.0	^9.0.0
chai	^4.3.10	^6.2.2
chai-as-promised	^7.1.2	^8.0.2
find-up	5.0.0	8.0.0
p-map	^4.0.0	^7.0.4
untildify	^4.0.0	^6.0.0

Tooling & Build Changes

• Vite 8 Upgrade: Migrated to Vite 8 with the new Rust-based Rolldown bundler (10-30x faster builds).
• TypeScript 6.0: Adopted latest type-system features and performance improvements.
• Strip ANSI: Replaced strip-ansi with Node.js built-in util.stripVTControlCharacters.
• Test Runner: Replaced vite-node with tsx for TypeScript support in ESM context.

---

Migration Guide

If you are upgrading to v21 from earlier versions:

1. Environment Check

• Ensure you meet the new Node.js requirement: ^20.19.0 || ^22.12.0 || >=24.0.0.
• Update npm to at least 10.0.0.

2. Update Configuration Files

... (truncated)

Commits

• 0bf6537 21.0.0
• 457b3e1 CHANGELOG
• 03a0a63 build
• 742854e PR: ESM Migration, Vite 8 Upgrade, and Dependency Overhaul (#1649)
• 51b6724 20.0.2
• e8dbb38 Show auto-detected cooldown source at normal log level; fix test isolation (#...
• a123ad2 20.0.1
• 9d0022a feat: add verbose output when packages are skipped due to cooldown (#1659)
• b7b4f70 feat: remove pre-push git hook (#1658)
• c3536c2 Add Node v24 to test workflow (#1608)
• Additional commits viewable in compare view

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