![]() You can safely ignore the error if all relevant operations are truly succeeding. This means that Pipedream is correctly detecting that code is still running, but there's also no issue - the library successfully ran, but just failed to resolve the Promise. Packages that make HTTP requests or read data from disk (for example) fail to resolve Promises at the right time, or at all. If you observe this, please file a bug (opens new window). If you're successfully awaiting all Promises, Pipedream could be throwing the warning in error. This warning can also be a false positive. For example, many older HTTP clients like request didn't support Promises natively, but the community published packages that wrapped it with a Promise-based interface (opens new window) (note: request has been deprecated, this is just an example). If a specific library doesn't support Promises, you can often find an equivalent library that does. You can often promisify a function in one line using Node.js' util.promisify function (opens new window). This is called " promisification (opens new window)". PDFKit A JavaScript PDF generation library for Node and the browser. But now want the image be trimmed and I found GraphicsMagick for node.js. Module Introduction (0:58) What is Async Await All About (4:08) Transforming Then Catch to Async Await (4:26). In the meantime, control returns to the caller of the async method. The await operator tells the compiler that the async method can't continue past that point until the awaited asynchronous process is complete. I insert an image with like this: var PDFDocument require ('pdfkit') var doc new PDFDocument () doc.image (someimageasbuffer) and it is working like expected. The marked async method can use Await to designate suspension points. on ( "finish", resolve ) ) // Once done, get stats const stats = fs. I am trying to create a PDF file with PDFKit. Wait for PDF to finalize await new Promise ( ( resolve ) => file. If you make an HTTP request like this in a Pipedream code step: Most Node.js packages that run async code return Promises as the result of method calls. You can wrap your function in a Promise to make sure it resolves before the step finishes. Since callback functions run asynchronously, they typically will not finish before the step ends. All Promises must be awaited within a step so they resolve before the step finishes. Make sure you await all Promises, or promisify callback functions.Īs the warning notes, this often arises from one of two issues: ![]() This step was still trying to run code when the step ended. If Pipedream detects that code is still running by the time the step completes, you'll see the following warning below the code step: This ensures future steps have access to its data. ![]() Any asynchronous code within a Node.js code step must complete before the next step runs.
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