Serverless Optimize Plugin
=============================
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Bundle with Browserify, transpile and minify with Babel automatically to your NodeJS runtime compatible JavaScript.

This plugin is a child of the great [serverless-optimizer-plugin](https://github.com/serverless/serverless-optimizer-plugin). Kudos!

**Requirements:**
* Serverless *v1.12.x* or higher.
* AWS provider and nodejs4.3/6.10/8.10/10.x/12.x/14.x runtimes

## Setup

 Install via npm in the root of your Serverless service:
```
npm install serverless-plugin-optimize --save-dev
```

* Add the plugin to the `plugins` array in your Serverless `serverless.yml`:

```yml
plugins:
  - serverless-plugin-optimize
```

* Set your packages to be built individually to have smaller packages:

```yml
package:
  individually: true
```

* All done! Optimize will run on SLS `deploy` and `invoke local` commands

## Options

Configuration options can be set globally in `custom` property and inside each function in `optimize` property. Function options overwrite global options.

#### Global

* **debug** (default `false`) - When debug is set to `true` it won't remove `prefix` folder and will generate debug output at the end of package creation.
* **exclude** (default `['aws-sdk']`) - Array of modules or paths that will be excluded.
* **extensions** (default `['.js', '.json']`) - Array of optional extra extensions modules that will be included.
* **external** Array of modules to be copied into `node_modules` instead of being loaded into browserify bundle. Note that external modules will require that its dependencies are within its directory and this plugin *will not* do this for you. e.g. you should execute the following: (`cd external_modules/some-module && npm i --prod`)
* **externalPaths** Optional object key value pair of external module name and path. If not set, external modules will look for reference path in `node_modules`.
* **global** (default `false`) - When global is set to `true` transforms will run inside `node_modules`.
* **ignore** - Array of modules or paths that won't be transformed with Babelify.
* **includePaths** - Array of file paths that will be included in the bundle package. Read [here](#includepaths-files) how to call these files.
* **minify** (default `true`) - When minify is set to `false` Babili preset won't be added.
* **plugins** - Array of Babel plugins.
* **prefix** (default `_optimize`) - Folder to output bundle.
* **presets** (default `['env']`) - Array of Babel presets.

```yml
custom:
  optimize:
    debug: true
    exclude: ['ajv']
    extensions: ['.extension']
    external: ['sharp']
    externalPaths:
      sharp: 'external_modules/sharp'
    global: true
    ignore: ['ajv']
    includePaths: ['bin/some-binary-file']
    minify: false
    prefix: 'dist'
    plugins: ['transform-decorators-legacy']
    presets: ['es2017']
```

#### Function

* **optimize** (default `true`) - When optimize is set to `false` the function won't be optimized.

```yml
functions:
  hello:
    optimize: false
```

* **exclude** - Array of modules or paths that will be excluded.
* **extensions** - Array of optional extra extensions modules that will be included.
* **external** Array of modules to be copied into `node_modules` instead of being loaded into browserify bundle. Note that external modules will require it's dependencies within it's directory. (`cd external_modules/some-module && npm i --prod`)
* **externalPaths** Optional object key value pair of external module name and path. If not set, external modules will look for reference path in `node_modules`.
* **global** - When global is set to `true` transforms will run inside `node_modules`.
* **ignore** - Array of modules or paths that won't be transformed with Babelify.
* **includePaths** - Array of file paths that will be included in the bundle package. Read [here](#includepaths-files) how to call these files.
* **minify** - When minify is set to `false` Babili preset won't be added.
* **plugins** - Array of Babel plugins.
* **presets** - Array of Babel presets.

```yml
functions:
  hello:
    optimize:
      exclude: ['ajv']
      extensions: ['.extension']
      external: ['sharp']
      externalPaths:
        sharp: 'external_modules/sharp'
      global: false
      ignore: ['ajv']
      includePaths: ['bin/some-binary-file']
      minify: false
      plugins: ['transform-decorators-legacy']
      presets: ['es2017']
```

#### includePaths Files

There is a difference you must know between calling files locally and after optimization with `includePaths`.

When Optimize packages your functions, it bundles them inside `/${prefix}/${functionName}/...` and when your lambda function runs in AWS it will run from root `/var/task/${prefix}/${functionName}/...` and your `CWD` will be `/var/task/`.

Solution in [#32](https://github.com/FidelLimited/serverless-plugin-optimize/issues/32#issuecomment-278432399) by @hlegendre. `path.resolve(process.env.LAMBDA_TASK_ROOT, ${prefix}, process.env.AWS_LAMBDA_FUNCTION_NAME, ${includePathFile})`.

## Contribute

Help us making this plugin better and future proof.

   * Clone the code
   * Install the dependencies with `npm install`
   * Create a feature branch `git checkout -b new_feature`
   * Lint with standard `npm run lint`

## License

This software is released under the MIT license. See [the license file](LICENSE) for more details.