is-identifier
Advanced tools
Check if a string is a valid JavaScript identifier
npm install is-identifier
import isIdentifier from 'is-identifier';
isIdentifier('foo');
//=> true
isIdentifier('1kg');
//=> false
isIdentifier('await'); // Reserved identifier
//=> false
[!NOTE] Although
globalThis,Infinity,NaN, andundefinedare properties of the global object and not identifiers, they are treated as reserved here because they should generally not be used as identifiers.
Returns a boolean for whether the given value is a valid JavaScript identifier.
FAQs
Check if a string is a valid JavaScript identifier
We found that is-identifier demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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