Pass command-line arguments to an npm script with the -- separator
domain: docs.npmjs.com · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Run a script that needs flags by placing -- before the arguments: npm run test -- --grep="pattern".
npm forwards everything after -- verbatim to the script instead of parsing it as an npm option.
Use the same form for scripts that read positional argv (npm run deploy -- production).
Scripts that are only pre/post variants cannot receive forwarded args; forward args to the concrete script name.
Official docs: https://docs.npmjs.com/cli/v10/commands/npm-run-script / https://docs.npmjs.com/cli/v10/using-npm/scripts
Known gotchas
Without --, leading dashes can be swallowed or mis-parsed as npm's own flags rather than reaching the script.
Arguments are passed only to the named script, not to its pre/post hooks.
Quoted values with spaces must stay quoted through the shell (npm run test -- --name "My Suite").
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