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I am building a lightning community based on Customer Service template and everything is working fine on Chrome. As part of cross browser testing, we ran it on Safari and started getting a weird issue on one of the pages.

Once the page is loaded, I am getting following error in the JS Console :

SyntaxError: Unexpected keyword 'const'. Const declarations are not supported in strict mode.

This JS is part of some safeEval.html. No additional details are provided in the browser.

When I tried to open the same page in the community builder (in Safari), it threw following error on page load:

This page has an error. You might just need to refresh it. Error in $A.getCallback() [undefined is not an object (evaluating 'fn.apply')] Callback failed: aura://ComponentController/ACTION$getComponent Failing descriptor: {markup://siteforce:routerInitializer}

Has anybody come across such issue? or any pointers. Let me know.

  • Looks like bug in the SFDC javascript code rather than anything to do with your components .Are you using const as a keyword ? Some browsers might not support them ? – Mohith Shrivastava Apr 28 '17 at 4:48
  • It's strange that this is only happening on one of the pages. Also It made me curious that what part of the page is causing the issue and why only safari? – Salesforcesmarty Apr 28 '17 at 5:55
  • Ya so looks like its salesforce code thats not been tested with specific version of safari you are using . – Mohith Shrivastava Apr 28 '17 at 6:13
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I think Const is ecma6 but locker service is right now compliant with ecma 5 javascript standards

SyntaxError: Unexpected keyword 'const'. Const declarations are not supported in strict mode.

are you declaring variables with const keyword in your client side controller/helper code.

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    I am not declaring any of the variable as "const" in my code. – Salesforcesmarty Apr 28 '17 at 5:56

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