If you come across issues using the plugin Unless it also accepts reading those options from a file, like babel-loaderĭoes with. Supported, chances are that it will not work with HappyPack.Īs a general rule, any loader that accepts "functions" in options will not work If the loader you're trying to use isn't listed there, you can refer to this wiki page We're keeping track of loader support in this wiki page. More information can be found in the ts-loader "happypack mode" section and you can refer to the example that shows this in action. "transpiling-only" mode then use the special plugin fork-ts-checker-notifier-webpack-plugin to perform static type checking. The short answer is: yes, it finally does! The longer answer is that you need Look at thread-loader and if it worksįor you - that's great, otherwise you can try HappyPack and see which fares That it's a loader and not a plugin (or both, in case of H.P.) makes it much Processing files in multiple threads, exactly what HappyPack does. Long answer: there's now a competing add-on in the form of a loader for You should use version >= 4.0.1 (of HappyPack). The builds above were run under Linux on a machine with 12 cores. Here's a rundown of the various states the build was performed in: Elapsed (ms) For example:įor the main repository I tested on, which had around 3067 modules, the build time went down from 39 seconds to a whopping ~10 seconds. Just pass in a unique id for each plugin and make It's possible to define multiple HappyPack plugins for different types of When the compiled version is retrieved, HappyPack serves it to its loader andĮventually your chunk. Those threads are actually simple node processes that invoke your transformer. Module, HappyPack will take it and all its dependencies and distributes those Where the bulk of loader transformations happen. HappyPack sits between webpack and your primary source files (like JS sources) when using -json as well.)Įnable this to log diagnostic messages from HappyPack to STDOUT. Will be silent when doing a profile build in order not to corrupt any JSON Since this variable was introduced, HappyPack The section on thread pools explains how and when toĮnable this to log status messages from HappyPack to STDOUT like start-upĭefaults to: true verboseWhenProfiling: BooleanĮnable this if you want HappyPack to still produce its output even when you'reĭoing a webpack -profile run. Is managed internally by each HappyPlugin instance, but you may override in watchĭefaults to: 3 threadPool: HappyThreadPoolĪ pre-defined thread-pool to use for retrieving worker threads. Keep in mind that this is only relevant when performing the initial buildĪs HappyPack will switch into a synchronous mode afterwards (i.e. There's certainly a diminishing return on this value and increasingīeyond 8 actually slowed things down for me. After a lot of tinkering, I found 4 to yield the best This number indicates how many Node VMs HappyPack will spawn for compiling HappyPack plugin defined, in which case you'll need distinct IDs to tell themĪpart. Normally, you would not need to specify this unless you have more than one
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