The error “the syntax requires an imported helper named __spreadArrays” is a common error that can show up in many ways. In this blog, we will go through some of the ways you can fix this issue. Read on.

When Does The Error: “the syntax requires an imported helper named __spreadArrays” Happen?

When trying to utilize spreading in typescript, though, you may receive the following warning from vs code:

the syntax requires an imported helper named __spreadArrays

typescript version: "2.3.4"

target: "es5"

How To Solve The Error: “the syntax requires an imported helper named __spreadArrays”

Approach 1: Update the tsLib requirement

Remove the highlighting by updating the tsLib requirement. It was version 1.9.0 in our instance. The issue was resolved after updating to 1.10.0.

pip install numpy==1.19.5

__spreadArrays is included in 1.10.0 tsLib version.

Approach 2: Simply run the following command

To fix the problem ”the syntax requires an imported helper named __spreadArrays”, you simply have to run the following command. It has been upgraded to version 2.2.0.

npm install tslib@latest --save

Approach 3: Simply change it to es6

Simply change it to es6 to make it work without having to create a dependency.

Approach 4: Do as the following guide

Excepting the solutions mentioned above, there is another solution for you to solve the error “the syntax requires an imported helper named __spreadArrays”. Let’s do as the following guide.

1. Ignore the mistake

Your program will work if you ignore this error. There is a non-zero probability that you won’t truly be prevented from building and debugging by the mistake. If your build genuinely fails, keep on.

2. Rebuild after cleaning up your solution

There are further instructions below if cleaning and rebuilding your solution don’t work.

3. Launch Visual Studio again

Although it may not help, restarting Visual Studio is not difficult to accomplish even if it doesn’t. Today, any cases.

4. Upgrade the tslib

If you’re using a version of the tslib prior to 1.10.0, updating it might be beneficial. Since it was published sometime in 2019, you ought to be using something more contemporary.

5. Simply reinstall the program

So, if all else fails, do this. It has always worked for me.

Just run the following command:

npm install tslib@latest --save

Alternatively, if you are certain which version you want to use, execute it as follows:

npm install tslib@[your-preferred-version]latest --save

After you finish the above steps, your error will completely resolved and your problem will work well.

Conclusion

We hope you enjoyed our article about the error. With this knowledge, we know that you can fix your error: “the syntax requires an imported helper named __spreadArrays” quickly by following these steps! If you still have any other questions about fixing this syntax error, please leave a comment below. Thank you for reading!