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Unexpected error when using import ... from statement in eval #36985
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You can either use
vm.Module, or indeed using Workers anddata:URLs:new Worker(new URL('data:text/javascript,import fs from "fs"'));
I'm not sure to understand why is that useful to you. What are you trying to do with this? Are you trying to simply validate the syntax or do you expect to get a result from the code?
Given that
eval()is defined by the language and provided by V8 (and not Node.js), there's really not going to be anything we can do here with how it works. You can tryvm.ModuleorWorkeras suggested but it's not entirely clear what the use case is so it's difficult to recommend an approach
I'm using Node LTS v14. I have a list of JavaScript files as strings that I'd like to evaluate. With CJS, this was possible using e.g.
eval:With ESM, however:
Apart from using the dynamic
importfunction, is there any possibility to useevalto evaluate ESM JavaScript? Is there any other reasonable way of evaluating? I found an approach that seems to work partially with Blobs and the dynamic import function (NOTE: It cannot resolve a dependency!). I've also looked at Workers, but it seems that issue is still open #30682.vmdoesn't look like a fit either.Any suggestions?
My expectation would either be that
evaltreats any input as a module, or that at least there's somehow a way to force eval to treat an input as a module, e.g.eval("string", { type: "module"});. Otherwise, how can any JavaScript be evaluate that contains the import ... from statement.