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rules.jshint.E015.html Maven / Gradle / Ivy

    
When do I get this error?
The "Unclosed regular expression" error is thrown when JSLint or JSHint encounters a regular expression literal with no closing / character. Here's an example:
​x
 
1
var regex = /^unclosed$;
2
​
JSLint found 1 error
Which linter should be used for this code snippet:
 JSLint JSHint ESLint
Which version of the linter should be used:
Update
Version 2015-09-23
Line 0:
Expected '/' and instead saw ''.

Why do I get this error?
This error is raised to highlight a fatal JavaScript syntax error. Your code
will not run unless you fix this issue. The ECMAScript 5 specification lists the
following grammar for regular expression literals (ES5
§7.8.5):

RegularExpressionLiteral ::

    / RegularExpressionBody /
RegularExpressionFlags

This production makes it clear that regular expression literal bodies must be
terminated by a / character. Not doing so will always cause a syntax error. To
fix this issue, simply close the regular expression in question:
2
 
1
var regex = /^closed$/;
2
​
JSLint found no errors
Which linter should be used for this code snippet:
 JSLint JSHint ESLint
Which version of the linter should be used:
Update
Version 2015-09-23

In JSHint 1.0.0 and above you have the ability to ignore any warning with a
special option syntax. Since this message relates to a fatal
syntax error you cannot disable it.