KITFORMA · EDITORIAL ANSWER
Why does npm ci fail when npm install worked locally?
KitForma editorial guide. Npm ci expects the dependency manifest and lockfile to agree and performs a clean, lockfile-driven installation. Local node_modules can hide missing or inconsistent declarations.
Step-by-step answer
Npm ci expects the dependency manifest and lockfile to agree and performs a clean, lockfile-driven installation. Local node_modules can hide missing or inconsistent declarations.
Commit the intended lockfile, use the same relevant npm configuration and test a clean install. Resolve manifest/lock disagreement deliberately with the supported package-manager workflow rather than deleting the lockfile in CI. Native modules may also require compatible runtime and system libraries. Reproducibility includes the Node version, package manager and install flags, not only package.json. Inspect the specific error before attributing every failure to a network problem.
Sources and verification
Sources checked:
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