Prevent runtime autodetection on gem require #143
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@byroot Only failing test is macOS on Ruby 2.5, should I exclude this Ruby version from macOS tests? Let me know ;) |
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A bit on the fence here. On one hand I understand your use case, on the other this may turn a boot/deploy issue (annoying but no user impact) into a runtime issue (user impact). But OK. |
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Thanks! |
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Do you know if you plan to release a new version soon? Just for information |
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No plans no. I'll try to find some time to do it, but you can just run it as a git gem. |
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Yes, that's what I planned for now, thanks again! For this, and all the good work! |
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I released 2.10.0. |
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Perfect, thanks Jean! |
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Changed the way
ExecJS.runtimeis defined so thatRuntimes.autodetectis called only when callingExecJS.runtimeand not when requiring the gem itself.Context
For the context, we work on a Rails application named Osuny and for optimization purposes, we were working on reducing the slug size of the application image on our hosting platform Scalingo.
For this, we wanted to remove the folder containing the
nodebinary as it is only used for asset compilation, and thus useless for application runtime. But removing it caused the application to fail on boot as ExecJS was trying to detect a JS runtime when starting the application.We managed to trace back the source to the
bootstrapgem being required, and following its dependencies, requiringautoprefixer-railsand thenexecjs, which in the require process, executes this line.That's why we proposed this change, which should not break anything but instead let ExecJS search its runtime only when necessary.