Distillation

Date: Sep 9, 2026

• 🟡 (09:31) Repository search found 94 matches related to binpatch and prefetching.
• 🟡 (09:31) packages/cli/package.json line 111 declares "binpatch": "^0.4.2".
• 🟡 (09:31) packages/cli/src/lib/delta-upgrade.ts imports githubReleaseSource from binpatch; githubReleaseSource({ ... }) is called around line 123.
• 🟡 (09:31) Delta resolution is centralized in resolveDelta() at packages/cli/src/lib/delta-upgrade.ts:464, with call sites around lines 494, 512, and 542.
• 🟡 (09:31) Delta prefetching is centralized in prefetch() at packages/cli/src/lib/delta-upgrade.ts:600; prefetchNightlyPatches() around line 615 calls prefetch(nightlySource(), targetVersion, signal), while prefetchStablePatches() around line 622 calls prefetch(stableSource(), targetVersion, signal).
• 🟡 (09:31) packages/cli/src/lib/version-check.ts imports prefetchNightlyPatches and prefetchStablePatches; around lines 237–239 it calls prefetchNightlyPatches(latestVersion, signal) for nightly and prefetchStablePatches(latestVersion, signal) for stable.
• 🟡 (09:31) packages/cli/test/lib/delta-upgrade.test.ts imports both prefetch functions and has dedicated sections around lines 1823–1844: prefetchNightlyPatches("0.14.0-dev.123") and prefetchStablePatches("0.14.0"). Its comment says these tests exercise function entry and the guard in prefetchAndCache.
• 🟡 (09:31) packages/cli/src/lib/delta-upgrade.ts around lines 326–328 intentionally uses local validateChainStep rather than binpatch’s validator so a richer 3-reason result, including size-exceeded, survives the binpatch adoption.
• 🟡 (09:31) packages/cli/src/lib/patch-cache.ts imports makeCache, PatchCache, and PatchChain from binpatch; re-exports ChainMeta, PatchStepMeta, chainFileName, and patchFileName.
• 🟡 (09:31) Additional direct binpatch consumers found: packages/cli/test/e2e/delta-upgrade.test.ts imports applyPatch and applyPatchChainInMemory; packages/cli/test/lib/bspatch.test.ts imports binpatch APIs; packages/cli/test/lib/bspatch.property.test.ts imports offtin and parsePatchHeader.
• 🟡 (09:31) packages/cli/script/bundle.ts around line 175 notes dependencies such as binpatch import from "zlib", which esbuild treats as an external builtin.