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language/node update documentation

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Christian Moritz 2017-06-26 23:22:11 +02:00
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docs/Node-for-Formula-Authors.md
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@ -30,7 +30,7 @@ Node modules which are compatible with the latest Node version should declare a
depends_on "node" depends_on "node"
``` ```
If your formula requires being executed with an older Node version you must vendor this older Node version as done in the [`kibana` formula](https://github.com/Homebrew/homebrew-core/blob/c6202f91a129e2f994d904f299a308cc6fbd58e5/Formula/kibana.rb). If your formula requires being executed with an older Node version you should use one of the versioned node formulae (e.g. `node@6`).
### Special requirements for native addons ### Special requirements for native addons
@ -47,8 +47,8 @@ Also note that such a formula would only be compatible with the same Node major
Node modules should be installed to `libexec`. This prevents the Node modules from contaminating the global `node_modules`, which is important so that npm doesn't try to manage Homebrew-installed Node modules. Node modules should be installed to `libexec`. This prevents the Node modules from contaminating the global `node_modules`, which is important so that npm doesn't try to manage Homebrew-installed Node modules.
In the following we distinguish between two types of Node modules using formulae: In the following we distinguish between two types of Node modules using formulae:
* formulae for standard Node modules compatible with npm's global module format which should use [`std_npm_install_args`](#installing-global-style-modules-with-std_npm_install_args-to-libexec) (like [`azure-cli`](https://github.com/Homebrew/homebrew-core/blob/d93fe9ba3bcc9071b699c8da4e7d733518d3337e/Formula/azure-cli.rb) or [`autocode`](https://github.com/Homebrew/homebrew-core/blob/1a670a6269e1e07f86683c2d164977c9bd8a3fb6/Formula/autocode.rb)) and * formulae for standard Node modules compatible with npm's global module format which should use [`std_npm_install_args`](#installing-global-style-modules-with-std_npm_install_args-to-libexec) (like [`azure-cli`](https://github.com/Homebrew/homebrew-core/blob/0f3b27d252b8112c744e0460d871cfe1def6b993/Formula/azure-cli.rb) or [`webpack`](https://github.com/Homebrew/homebrew-core/blob/6282879973d569962e63da7c81ac4623e1a8336b/Formula/webpack.rb)) and
* formulae where the `npm install` step is only one of multiple not exclusively Node related install steps (not compatible with npm's global module format) which have to use [`local_npm_install_args`](#installing-module-dependencies-locally-with-local_npm_install_args) (like [`elixirscript`](https://github.com/Homebrew/homebrew-core/blob/ec1e40d37e81af63122a354f0101c377f6a4e66d/Formula/elixirscript.rb) or [`kibana`](https://github.com/Homebrew/homebrew-core/blob/c6202f91a129e2f994d904f299a308cc6fbd58e5/Formula/kibana.rb)) * formulae where the `npm install` call is not the only required install step (e.g. need to compile non-JavaScript sources too) have to use [`local_npm_install_args`](#installing-module-dependencies-locally-with-local_npm_install_args) (like [`elixirscript`](https://github.com/Homebrew/homebrew-core/blob/4bb491b7b246830aed57b97348a17e9401374978/Formula/elixirscript.rb)
Both methods have in common that they are setting the correct environment for using npm inside Homebrew and are returning the arguments for invoking `npm install` for their specific use cases. This includes fixing an important edge case with the npm cache (caused by Homebrew's redirection of `HOME` during the build and test process) by using our own custom `npm_cache` inside `HOMEBREW_CACHE`, which would otherwise result in very long build times and high disk space usage. Both methods have in common that they are setting the correct environment for using npm inside Homebrew and are returning the arguments for invoking `npm install` for their specific use cases. This includes fixing an important edge case with the npm cache (caused by Homebrew's redirection of `HOME` during the build and test process) by using our own custom `npm_cache` inside `HOMEBREW_CACHE`, which would otherwise result in very long build times and high disk space usage.
@ -72,6 +72,8 @@ This will install your Node module in npm's global module style with a custom pr
bin.install_symlink Dir["#{libexec}/bin/*"] bin.install_symlink Dir["#{libexec}/bin/*"]
``` ```
**Note:** Because of a required workaround for `npm@5` calling `npm pack` we currently don't support installing modules (from non-npm registry tarballs), which require a prepublish step (e.g. for transpiling sources). See [Homebrew/brew#2820](https://github.com/Homebrew/brew/pull/2820) for more information.
### Installing module dependencies locally with `local_npm_install_args` ### Installing module dependencies locally with `local_npm_install_args`
In your formula's `install` method, do any installation steps which need to be done before the `npm install` step and then `cd` to the top level of the included Node module. Then, use `system` with `Language::Node.local_npm_install_args` to invoke `npm install` like: In your formula's `install` method, do any installation steps which need to be done before the `npm install` step and then `cd` to the top level of the included Node module. Then, use `system` with `Language::Node.local_npm_install_args` to invoke `npm install` like: