nvmw - the nvm wrapper.
Ensure that a specified version of nvm
is installed, and then use it to
ensure a specific version of nodejs is installed.
Then execute the given
arguments with the desired node version selected (i.e., following an nvm use).
Specify the node version to install in a .nvmrc file, as usual with nvm, or
alternatively with the NODE_VERSION environment variable (which supercedes
any .nvmrc file).
You can also specify which version of nvm to use, with the NVM_VERSION env
var. Otherwise, a default value is used (hard-coded below). This should be a specific
version tagged version, excluding the leading 'v'.
For status messages, set the NVMW_DEBUG variable to "1".
Everything is stored in the .nvmw directory in the same directory as this
script is located (NOT necessarily the working directory). Versions of the
nvm.sh script are stored under there, and, when invoked through the nvm-wrapper,
is configured to use .nvmw/nvm as the NVM directory; all versions of
node and related tools (e.g., npm), plus all "globally" installed npm modules
are stored there (assuming you use the nvm-wrapper to install them, like
./nvmw npm install MODULE_NAME -g). If you want, you can change the location
where nvmw stores things by setting the NVMW_DIR env var. For instance, you
could set it to a system wide location so that nvmw and nvm cache everything
in one location.
Just drop nvmw into your project's root directory. That's it. Oh, and you need either
curl or wget installed. Other than that, it should work in pretty much any bash shell
(possibly others).
E.g.:
wget https://raw.githubusercontent.com/mearns/nvmw/v1.0.0/nvmw$ pwd
/tmp
$
$ # Make sure no previous nvmw things are in the way,
$ # to get consistent output.
$ rm -rf .nvmw
$ rm -f .nvmrc
$
$ # Specify which version of node we want to use, in the .nvmrc
$ echo "4.3.1" > .nvmrc
$
$ # Invoke node, using the wrapper.
$ # Neither nvm nor node is installed here yet, so they will both be installed first.
$ ./nvmw node --version
######################################################################## 100.0%
Found '/tmp/.nvmrc' with version <4.3.1>
Downloading https://nodejs.org/dist/v4.3.1/node-v4.3.1-linux-x64.tar.xz...
######################################################################## 100.0%
Now using node v4.3.1 (npm v2.14.12)
Creating default alias: default -> 4.3.1 (-> v4.3.1)
v4.3.1
$
$ # The version is installed now, it'll be quicker this time.
$ ./nvmw node --version
v4.3.1
$
$ # Override the version with the NODE_VERSION env var.
$ # The new version of node will be installed, but nvm is already installed.
$ NODE_VERSION=5.6.0 ./nvmw node --version
######################################################################## 100.0%
Now using node v5.6.0 (npm v3.6.0)
v5.6.0
$
$ # Back to using nvmrc
$ ./nvmw node --version
v4.3.1
$
$ # And back to overridden version
$ NODE_VERSION=5.6.0 ./nvmw node --version
v5.6.0
$
$ # Install npm modules.
$ sudo ./nvmw npm install pm2 -g
npm WARN optional dep failed, continuing [email protected]
/tmp/.nvmw/nvm/versions/node/v4.3.1/bin/pm2 -> /tmp/.nvmw/nvm/versions/node/v4.3.1/lib/node_modules/pm2/bin/pm2
/tmp/.nvmw/nvm/versions/node/v4.3.1/bin/pm2-dev -> /tmp/.nvmw/nvm/versions/node/v4.3.1/lib/node_modules/pm2/bin/pm2-dev
[email protected] /tmp/.nvmw/nvm/versions/node/v4.3.1/lib/node_modules/pm2
├── [email protected]
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├── [email protected] ([email protected], [email protected])
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├── [email protected] ([email protected], [email protected], [email protected], [email protected])
├── [email protected] ([email protected], [email protected], [email protected], [email protected], [email protected])
├── [email protected]
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└── [email protected] ([email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected])
$
$ # Now pm2 is installed, but only for the local version 4.3.0 of node.
$ ./nvmw pm2 --version
1.0.1
$
$ # It isn't installed for other versions of node.
$ NODE_VERSION=5.6.0 ./nvmw pm2 --version
./nvmw: line 198: pm2: command not found
$
$ ./nvmw which pm2
/tmp/.nvmw/nvm/versions/node/v4.3.1/bin/pm2You shouldn't generally use the nvm wrapper to execute nvm. It may work in
particular cases, but, in particular, if you're overriding the node version
with the NODE_VERSION env var, nvm itself does not consider this.
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