domain: docs.npmjs.com · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Inside a script, read package.json fields via process.env.npm_package_name and process.env.npm_package_version (shell: $npm_package_name, $npm_package_version).
Nested package.json objects are flattened with underscores; e.g. scripts.install becomes npm_package_scripts_install.
PATH is augmented with node_modules/.bin so locally installed binaries resolve by short name.
npm sets NODE to the executing node binary and npm_lifecycle_event to the current script name; scripts may read both.
Official docs: https://docs.npmjs.com/cli/v10/using-npm/scripts / https://docs.npmjs.com/cli/v10/using-npm/scripts
Known gotchas
Only package.json fields are exposed under npm_package_, and array/object nesting collapses to underscore-joined keys.
The environment is derived at script runtime, so a package.json edit requires re-running npm for scripts to see it.
npm_lifecycle_event names the specific script (including pre/post variants), useful for branching behavior.
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