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Q&A Nodejs wrap async function in synchronous function

What are my options here? Do I need to switch the module I'm using to access the db? Do I need to write C code? Or is there a really clever technique to directly solve this problem, using only nod...

posted 4y ago by Moshi‭

Answer
#1: Initial revision by user avatar Moshi‭ · 2020-09-03T22:52:11Z (over 4 years ago)
> What are my options here? Do I need to switch the module I'm using to access the db? Do I need to write C code? Or is there a really clever technique to directly solve this problem, using only nodejs?

Generally, you shouldn't be turning asynchronous functions into synchronous ones. I would suggest to first look at your code and ask yourself, do you *need* `readFileSync`? Node.js practically revolves around callbacks and asynchronous programming, so such a use case should be extremely rare.

If you actually do need it, then I would then suggest just switching modules to one which has synchronous functions, since you will likely be needing to write other synchronous functions as well and it's better just to get a module with support for that.

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**Last resort**

If all else fails... there do exist modules, such as [deasync](https://github.com/abbr/deasync), which convert asynchronous functions into synchronous ones.