Handling Midnight SDK Breaking Changes: A Developer's Upgrade Playbook

Short summary

Midnight SDK v4.x consolidates 6 packages into one, renames APIs (walletProvider → privateStoragePasswordProvider), and merges transaction functions. Stale contract artifacts must be deleted and recompiled with explicit version pragmas. A step-by-step guide covers: audit → package.json update → clean install → recompile → test.

• •Six Midnight packages consolidated into @midnight-ntwrk/midnight-js barrel export
• •Breaking changes: walletProvider renamed, transaction signing merged, CLI updated to compactc
• •Contracts require pragma language_version >= 0.20 and compiled artifacts must be regenerated

Generated with AI, which can make mistakes.