isGeneratorFunction javascript Code Snippet in 2025
typefunctionintermediate
Last Updated: 17 November 2025
Checks if the given argument is a generator function.
- Use
Object.prototype.toString()andFunction.prototype.call()and check if the result is'[object GeneratorFunction]'.
const isGeneratorFunction = val => Object.prototype.toString.call(val) === '[object GeneratorFunction]';
isGeneratorFunction(function() {}); // false
isGeneratorFunction(function*() {}); // truejavascript snippet similar to isGeneratorFunction For You in November 2025
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