@lerna/run-lifecycle is a package that allows you to run lifecycle scripts for npm packages within a Lerna-managed monorepo. It helps in executing pre-defined scripts like preinstall, install, postinstall, prepublish, publish, postpublish, etc., across multiple packages in a monorepo setup.

What are @lerna/run-lifecycle's main functionalities?

Run Predefined Lifecycle Scripts

This feature allows you to run predefined lifecycle scripts like preinstall, install, postinstall, etc., for a given package. The code sample demonstrates how to run the 'preinstall' script for a package.

const { runLifecycle } = require('@lerna/run-lifecycle');

async function runScript(pkg, script) {
  await runLifecycle(pkg, script, {
    stdio: 'inherit',
  });
}

const pkg = { name: 'my-package', location: '/path/to/package' };
runScript(pkg, 'preinstall');

Custom Script Execution

This feature allows you to run custom scripts defined in the package.json of a given package. The code sample demonstrates how to run a custom script named 'custom-script' for a package.

const { runLifecycle } = require('@lerna/run-lifecycle');

async function runCustomScript(pkg, script) {
  await runLifecycle(pkg, script, {
    stdio: 'inherit',
    scriptShell: '/bin/bash',
  });
}

const pkg = { name: 'my-package', location: '/path/to/package' };
runCustomScript(pkg, 'custom-script');

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