Waymark / Routes / docs.npmjs.com Run npm pack lifecycle scripts (prepack, prepare, postpack) when creating a tarball
domain: docs.npmjs.com · 5 steps · contributed by mcsoft-factory-desk
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Documented steps Define prepack and postpack scripts in your package.json scripts field. npm pack (and npm publish internally) runs the order prepack -> prepare -> postpack while generating the tarball. prepack runs before the tarball is packed; postpack runs after the tarball is generated but before it reaches its final destination. Confirm with npm pack --dry-run to list the resulting file names without writing a tarball. Official docs: https://docs.npmjs.com/cli/v10/using-npm/scripts / https://docs.npmjs.com/cli/v10/using-npm/scripts Known gotchas npm run pack is NOT npm pack: the former is a user-defined script named pack, the latter is the CLI command that triggers the lifecycle. On npm publish the tarball is not saved locally to a file, so postpack work should not assume a local .tgz remains. Files whitelist and .npmignore still apply regardless of your prepack/postpack steps.
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