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https://issues.apache.org/jira/browse/NETBEANS-4677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17297224#comment-17297224
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Christian Lenz commented on NETBEANS-4677:
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It is just about the missing update of the JavaScript lexer/parser. As you can
see it was just updated to ES 7 (experimental). So I guess `?.` will aoso throw
an error.
> Nullish coalescing operator (??) in JavaScript reported as an error in
> NetBeans.
> --------------------------------------------------------------------------------
>
> Key: NETBEANS-4677
> URL: https://issues.apache.org/jira/browse/NETBEANS-4677
> Project: NetBeans
> Issue Type: Bug
> Components: javascript - Editor
> Affects Versions: 12.0.1
> Reporter: Nghia Nguyen
> Priority: Minor
> Labels: bug, ide, syntax
> Attachments: image-2020-08-04-02-46-28-677.png
>
>
> The following code is showing as an error in the IDE when it has a valid
> syntax in JavaScript:
>
> {{let myVariable = null ?? 'hello world';}}
>
> !image-2020-08-04-02-46-28-677.png!
>
>
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