chore: bump Yarn to 4.15.0 and harden install config#965
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layershifter merged 3 commits intoMay 22, 2026
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- Bump Yarn from 4.3.1 to 4.15.0 (latest v4 stable) - Add enableScripts: false to skip dependency lifecycle scripts - Add npmMinimalAgeGate: "1d" to require packages be at least 1 day old Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Bumps lockfile cacheKey 8 -> 10 (required because `yarn install --immutable` in CI refuses to migrate the lockfile on its own). - Yarn 4.15 also auto-added `approvedGitRepositories: ["**"]` to .yarnrc.yml as part of its hardened-mode safelist for git deps; `["**"]` preserves existing behavior. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Yarn 4.15 auto-injected approvedGitRepositories: ["**"] during install, but the repo has no git: protocol deps. Removing keeps the hardened default (no arbitrary git URL installs allowed). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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mshoho
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May 22, 2026
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Summary
enableScripts: falseso dependency lifecycle scripts (preinstall/install/postinstall) don't run during installs, reducing supply-chain attack surface from compromised packages.npmMinimalAgeGate: "1d"so packages must be at least 1 day old before they can be installed, providing a short cooldown against typosquatting and hijacked-release attacks.Test plan
yarn install, build, tests)🤖 Generated with Claude Code