Can I pass options to GoogleClosureMinimizer at runtime? I have a 3rd party javascript file (html2canvas.min.js) that tapestry-webresources is failing to parse because the JS is using javascript getters, which I think were introduced in ECMASCRIPT5.
2021-01-28 04:31:40,536 ERROR [org.apache.tapestry5.ioc.Registry] (default task-14) Compilation failed: JSC_PARSE_ERROR. Parse error. getters are not supported in older versions of JavaScript. If you are targeting newer versions of JavaScript, set the appropriate language_in option. at StreamableResource<text/javascript classpath:META-INF/modules/html2canvas.min.js COMPRESSABLE lastModified: Thu Jan 28 03:44:05 UTC 2021 size: 165202> line 20 : 0. As I am targeting only modern versions of Chrome and Safari, it seems that I could fix this by passing option —language_in=ECMASCRIPT5 to google-closure-compiler, but how can I do this? Is there a system property I can provide at runtime? In case it helps, here’s the stack trace... 2021-01-28 04:31:40,536 ERROR [org.apache.tapestry5.ioc.Registry] (default task-14) Compilation failed: JSC_PARSE_ERROR. Parse error. getters are not supported in older versions of JavaScript. If you are targeting newer versions of JavaScript, set the appropriate language_in option. at StreamableResource<text/javascript classpath:META-INF/modules/html2canvas.min.js COMPRESSABLE lastModified: Thu Jan 28 03:44:05 UTC 2021 size: 165202> line 20 : 0. 2021-01-28 04:31:40,537 ERROR [org.apache.tapestry5.ioc.Registry] (default task-14) Operations trace: 2021-01-28 04:31:40,537 ERROR [org.apache.tapestry5.ioc.Registry] (default task-14) [ 1] Streaming compressed module html2canvas.min 2021-01-28 04:31:40,537 ERROR [org.apache.tapestry5.ioc.Registry] (default task-14) [ 2] Streaming classpath:META-INF/modules/html2canvas.min.js (compressed) 2021-01-28 04:31:40,537 ERROR [org.apache.tapestry5.ioc.Registry] (default task-14) [ 3] Minimizing StreamableResource<text/javascript classpath:META-INF/modules/html2canvas.min.js COMPRESSABLE lastModified: Thu Jan 28 03:44:05 UTC 2021 size: 165202> 2021-01-28 04:31:40,544 ERROR [org.apache.tapestry5.modules.TapestryModule.RequestExceptionHandler] (default task-14) Processing of request failed with uncaught exception: org.apache.tapestry5.ioc.internal.OperationException: Compilation failed: JSC_PARS E_ERROR. Parse error. getters are not supported in older versions of JavaScript. If you are targeting newer versions of JavaScript, set the appropriate language_in option. at StreamableResource<text/javascript classpath:META-INF/modules/html2canvas.min.j s COMPRESSABLE lastModified: Thu Jan 28 03:44:05 UTC 2021 size: 165202> line 20 : 0.: org.apache.tapestry5.ioc.internal.OperationException: Compilation failed: JSC_PARSE_ERROR. Parse error. getters are not supported in older versions of JavaScript. If yo u are targeting newer versions of JavaScript, set the appropriate language_in option. at StreamableResource<text/javascript classpath:META-INF/modules/html2canvas.min.js COMPRESSABLE lastModified: Thu Jan 28 03:44:05 UTC 2021 size: 165202> line 20 : 0. … Caused by: java.lang.RuntimeException: Compilation failed: JSC_PARSE_ERROR. Parse error. getters are not supported in older versions of JavaScript. If you are targeting newer versions of JavaScript, set the appropriate language_in option. at StreamableResource<text/javascript classpath:META-INF/modules/html2canvas.min.js COMPRESSABLE lastModified: Thu Jan 28 03:44:05 UTC 2021 size: 165202> line 20 : 0. 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) ... 101 more Cheers, Geoff