@lerna/exec

Run an arbitrary command in each package

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Last updated 6 years ago by evocateur .
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$ npm install @lerna/exec 
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@lerna/exec

Run an arbitrary command in each package

Usage

$ lerna exec -- <command> [..args] # runs the command in all packages
$ lerna exec -- rm -rf ./node_modules
$ lerna exec -- protractor conf.js

Run an arbitrary command in each package. A double-dash (--) is necessary to pass dashed flags to the spawned command, but is not necessary when all the arguments are positional.

The name of the current package is available through the environment variable LERNA_PACKAGE_NAME:

$ lerna exec -- npm view \$LERNA_PACKAGE_NAME

You may also run a script located in the root dir, in a complicated dir structure through the environment variable LERNA_ROOT_PATH:

$ lerna exec -- node \$LERNA_ROOT_PATH/scripts/some-script.js

Options

lerna exec respects the --concurrency, --scope, and --ignore flags (see Filter Flags).

$ lerna exec --scope my-component -- ls -la

The commands are spawned in parallel, using the concurrency given (except with --parallel). The output is piped through, so not deterministic. If you want to run the command in one package after another, use it like this:

$ lerna exec --concurrency 1 -- ls -la

--stream

Stream output from child processes immediately, prefixed with the originating package name. This allows output from different packages to be interleaved.

$ lerna exec --stream -- babel src -d lib

--parallel

Similar to --stream, but completely disregards concurrency and topological sorting, running a given command or script immediately in all matching packages with prefixed streaming output. This is the preferred flag for long-running processes such as babel src -d lib -w run over many packages.

$ lerna exec --parallel -- babel src -d lib -w

Note: It is advised to constrain the scope of this command when using the --parallel flag, as spawning dozens of subprocesses may be harmful to your shell's equanimity (or maximum file descriptor limit, for example). YMMV

--no-bail

# Run a command, ignoring non-zero (error) exit codes
$ lerna exec --no-bail <command>

By default, lerna exec will exit with an error if any execution returns a non-zero exit code. Pass --no-bail to disable this behavior, executing in all packages regardless of exit code.

Current Tags

  • 6.6.2                                ...           latest (2 years ago)
  • 6.5.0                                ...           next (2 years ago)

113 Versions

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