I use gradle to build and deploy on Heroku, but not support ES6
Build log heroku:
scripts.bundle.unminified.js:510: ERROR - this language feature is only supported for ECMASCRIPT6 mode or better: default parameter. Use --language_in=ECMASCRIPT6 or ECMASCRIPT6_STRICT to enable ES6 features. KTDialer.createInstances = function(selector = '[data-kt-dialer="true"]') {
I don't know where to set --language_in=ECMASCRIPT6
Please help me - -
Replies (4)
Hi Evandro Kumasaka,
Maybe this could help. Update your grade configuration;
languageMode: "ES6",https://stackoverflow.com/a/46805560
Thanks
Thanks!
Hi Faizal!,
I changed the build.gradle to:
languageMode: 'ES6',
targetLanguage: 'ES6', //Can go from ES6 to ES5 for those bleeding edgers
It worked. But it's still throwing an exception:
Closure uglify JS Exception
com.google.javascript.jscomp.CompilerOptionsPreprocessor$InvalidOptionsException: ES6 is only supported for transpilation to a lower ECMAScript version. Set --language_out to ES3, ES5, or ES5_STRICT.
Hi Evandro Kumasaka
Sorry for the delay. At the moment, we only support gulp and webpack builds. The Metronic assets work perfectly on these two build tools. We did not test it on Gradle build. By right, any build tools should work with javascript codes. Please refer to the Gradle documentation and forum regarding this issue.
Thanks
