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isGeneratorFunction javascript Code Snippet in 2024

typefunctionintermediate

Last Updated: 13 July 2024

Checks if the given argument is a generator function.

  • Use Object.prototype.toString() and Function.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*() {}); // true

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