Add .npmrc ignore-scripts=true (Miasma install-hook mitigation)#134
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Prevents npm from auto-running dependency lifecycle scripts (preinstall/install/postinstall) on install, mitigating the Miasma/Shai-Hulud npm supply-chain worm class. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Pull request overview
Adds a repository-local npm configuration to disable automatic execution of dependency lifecycle scripts during installs, mitigating the install-hook mechanism used by the Miasma / Shai-Hulud npm supply-chain worm (PLA-1580 fleet rollout).
Changes:
- Add
.npmrcwithignore-scripts=trueto suppresspreinstall/install/postinstalllifecycle scripts duringnpm install/npm ci. - Preserve the ability to run explicit scripts via
npm run <script>(no change to package scripts).
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h-z
approved these changes
Jun 11, 2026
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Description of the change
Adds a repo-local
.npmrccontainingignore-scripts=trueso npm does not auto-execute dependency lifecycle scripts (preinstall/install/postinstall) onnpm install. This blocks the execution mechanism used by the Miasma / Shai-Hulud npm supply-chain worm.Config-only change. Explicit
npm run <script>invocations are unaffected; only automatic install-time lifecycle scripts are suppressed. Part of a fleet-wide rollout tracked in Linear PLA-1580 (one PR per repo).Type of change
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