Hi Geoff, we ran into some issues with Google Closure in our projects so we added a RequestFilter that blacklists JS compression for some files by settings org.apache.tapestry5.TapestryConstants.DISABLE_JAVASCRIPT_MINIMIZATION in the request to true based on regex-patterns.
Tapestry 5.5 update Google Closure to a version from 2017 (vs 2013 in 5.4) but I'm not sure if it's configured for ES6 though, or with which version Google Closure started supporting ES6. An alternative approach (which we didn't use, blacklisting was good for us) is replacing the minimizer with a custom version, it's contributed in org.apache.tapestry5.webresources.modules.WebResourcesModule.setupDefaultResourceMinimizers(MappedConfiguration<String, ResourceMinimizer>) and should be overridable. The topic came up on the mailing list before: http://apache-tapestry-mailing-list-archives.1045711.n5.nabble.com/Closure-minimize-parse-error-td5733834.html Hope this helps. Cheers Ben On Thu, Aug 1, 2019 at 6:48 AM JumpStart < geoff.callender.jumpst...@gmail.com> wrote: > Is there any plan to upgrade the ResourceMinimizer to handle EcmaScript 6? > I’m having to downgrade some javascript to avoid the minimiser rejecting it > in production. For example: > > 2019-07-29 05:25:33,162 SEVERE [com.google.javascript.jscomp] (default > task-14) StreamableResource<text/javascript > classpath:META-INF/assets/clientapp/indexedDBHandler.js COMPRESSABLE > lastModified: Mon Jul 29 05:25:14 UTC 2019 size: 10105>:29: ERROR - Parse > error. syntax error > return new Promise((resolve, reject) => { > ^ > … > 2019-07-29 05:25:33,181 ERROR [org.apache.tapestry5.ioc.Registry] (default > task-14) Compilation failed: JSC_PARSE_ERROR. Parse error. syntax error at > StreamableResource<text/javascript > classpath:META-INF/assets/clientapp/indexedDBHandler.js COMPRESSABLE > … > at > org.apache.tapestry5.internal.webresources.GoogleClosureMinimizer.doMinimize(GoogleClosureMinimizer.java:97) > at > org.apache.tapestry5.internal.webresources.AbstractMinimizer$1.perform(AbstractMinimizer.java:72) > at > org.apache.tapestry5.internal.webresources.AbstractMinimizer$1.perform(AbstractMinimizer.java:68) > at > org.apache.tapestry5.ioc.internal.OperationTrackerImpl.perform(OperationTrackerImpl.java:110) > > Cheers, > > Geoff
