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Diffstat (limited to 'docs/Node-for-Formula-Authors.md')
| -rw-r--r-- | docs/Node-for-Formula-Authors.md | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/docs/Node-for-Formula-Authors.md b/docs/Node-for-Formula-Authors.md index c78668a58..83516da93 100644 --- a/docs/Node-for-Formula-Authors.md +++ b/docs/Node-for-Formula-Authors.md @@ -14,9 +14,9 @@ where `libexec` is the destination prefix (usually the `libexec` variable). # Download URL -If the Node module is also available on the npm registry, we prefer npm hosted release tarballs over GitHub (or elsewhere) hosted source tarballs. The advantages of these tarballs are that they doesn't include the files from the `.npmignore` (such as tests) resulting in a smaller download size and that a possibly transpilation step is already done (e.g. no need to compile CoffeeScript files as a build step). +If the Node module is also available on the npm registry, we prefer npm hosted release tarballs over GitHub (or elsewhere) hosted source tarballs. The advantages of these tarballs are that they don't include the files from the `.npmignore` (such as tests) resulting in a smaller download size and that any possible transpilation step is already done (e.g. no need to compile CoffeeScript files as a build step). -The npm registry URLs have usually the format of: +The npm registry URLs usually have the format of: ``` https://registry.npmjs.org/<name>/-/<name>-<version>.tgz @@ -26,33 +26,33 @@ Alternatively you could curl the JSON at `https://registry.npmjs.org/<name>` and # Dependencies -Node modules, which are compatible with the latest Node version should declare a dependencies on the `node` formula. +Node modules which are compatible with the latest Node version should declare a dependency on the `node` formula. ```ruby depends_on "node" ``` -If your formula requires to be 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 must vendor this older Node version as done in the [`kibana` formula](https://github.com/Homebrew/homebrew-core/blob/c6202f91a129e2f994d904f299a308cc6fbd58e5/Formula/kibana.rb). ### Special requirements for native addons -If your node module is a native addon or has a native addon somewhere in it's dependency tree you have to declare an additional dependency. Since the compilation of the native addon results in a invocation of `node-gyp` we need an additional build time dependency on `:python` (because gyp depends on Python 2.7). +If your node module is a native addon or has a native addon somewhere in its dependency tree you have to declare an additional dependency. Since the compilation of the native addon results in a invocation of `node-gyp` we need an additional build time dependency on `:python` (because gyp depends on Python 2.7). ```ruby depends_on :python => :build ``` -Please also note, that such a formula would only be compatible with the same Node major version it originally was compiled with. This means that we need to revision every formula with a Node native addon with every major version bump of the `node` formula. To make sure we don't overlook your formula on a Node major version bump, write a meaningful test which would fail in such a case (invoked with an ABI incompatible Node version). +Please also note that such a formula would only be compatible with the same Node major version it originally was compiled with. This means that we need to revision every formula with a Node native addon with every major version bump of the `node` formula. To make sure we don't overlook your formula on a Node major version bump, write a meaningful test which would fail in such a case (invoked with an ABI incompatible Node version). # Installation 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 2 type of Node module 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 were 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` 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)) -Both methods have in common, that they are setting the correct environment for using npm inside Homebrew up and 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. To use them you have to require the Node language module at the beginning of your formula file with: @@ -62,13 +62,13 @@ require "language/node" ### Installing global style modules with `std_npm_install_args` to libexec -In your formula's `install` method, simply cd to the top level of your Node module if necessary and than use `system` to invoke `npm install` with `Language::Node.std_npm_install_args` like: +In your formula's `install` method, simply cd to the top level of your Node module if necessary and then use `system` to invoke `npm install` with `Language::Node.std_npm_install_args` like: ```ruby system "npm", "install", *Language::Node.std_npm_install_args(libexec) ``` -This will install your Node module in npm's global module style with a custom prefix to `libexec`. All your modules executable will be automatically resolved by npm into `libexec/"bin"` for you, which is not symlinked into Homebrew's prefix. We need to make sure these are installed. Do this with we need to symlink all executables to `bin` with: +This will install your Node module in npm's global module style with a custom prefix to `libexec`. All your modules' executables will be automatically resolved by npm into `libexec/"bin"` for you, which is not symlinked into Homebrew's prefix. We need to make sure these are installed. To do this we need to symlink all executables to `bin` with: ```ruby bin.install_symlink Dir["#{libexec}/bin/*"] @@ -76,13 +76,13 @@ bin.install_symlink Dir["#{libexec}/bin/*"] ### 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 than 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: ```ruby system "npm", "install", *Language::Node.local_npm_install_args ``` -This will install all of your Node modules dependencies to your local build path. You can now continue with your build steps and take care of the installation into the Homebrew `prefix` by your own, following the [general Homebrew formula instructions](https://github.com/Homebrew/brew/blob/master/docs/Formula-Cookbook.md). +This will install all of your Node modules dependencies to your local build path. You can now continue with your build steps and take care of the installation into the Homebrew `prefix` on your own, following the [general Homebrew formula instructions](https://github.com/Homebrew/brew/blob/master/docs/Formula-Cookbook.md). # Example |