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node.jsbluebirdes6-promise

Native promises vs. Bluebird promises

Is there a way in Node.js to check to determine if global.Promise is the native promise implementation? As opposed to Bluebird promises, etc?

Solution

  • You could do a feature test and test to see if any of the Bluebird extended features are present:

    function testBluebird() {
   // test to see if a representative sample of Bluebird-specific features are present
   return Promise && Promise.join && Promise.try && Promise.method && Promise.map;
}

    Like with many things in Javascript, you should probably just test to see if the features you want to use are present rather than trying to determine if a specific library is loaded.