Installing dependency fails with 'Unterminated string constant' error

[ehouais]

Hi there,

I'm using the npm package @auth0/auth0-spa-js in my project.
When I run snowpack (2.11.1), it detects the import and tries to install it, but fails to do so:

Failed to load node_modules/@auth0/auth0-spa-js/dist/auth0-spa-js.production.esm.js
  Unterminated string constant

There's no problem if I copy the file in my src directory and import it explicitely, so it may be some kind of edge case when parsing minified module source.

Bonus question
Why does snowpack resolves '@auth0/auth0-spa-js' to

node_modules/@auth0/auth0-spa-js/dist/auth0-spa-js.production.esm.js

and not, say,

node_modules/@auth0/auth0-spa-js/dist/auth0-spa-js.development.js

, which also exists ?

[FredKSchott]

We just resolve as the package.json tells us :) For this package, it points to the "production" build: https://unpkg.com/@auth0/auth0-spa-js@1.12.1/package.json

if you want to use "development", you'll need to define your own "alias" in your Snowpack config: https://www.snowpack.dev/#alias-options

I'm not sure what could be causing this, but I bet you're right that the minified code isn't parsed correctly. Can you try again with the dev entrypoint and report back if that works?

[ehouais]

Ah yes, the module directive. Good to know.

So the unminified development version is parsed and installed with no problem.
And the minified production version is parsed by some online javascript parsers : seems really to be "on the edge", whatever that means :)

side-note: I tested by directly modifying the installed module's package.json, since the alias

alias: {
  '@auth0/auth0-spa-js': './node_modules/@auth0/auth0-spa-js/dist/auth0-spa-js.development.js'
}

causes the web module installation to fail silently. Am I doing something wrong ?

By the way, great project. This is obviously the way to go.

[FredKSchott]

Thanks! The alias syntax for a package is:

alias: {
  '@auth0/auth0-spa-js': '@auth0/auth0-spa-js/dist/auth0-spa-js.development.js'
}

If that doesn’t work, please let us know!

[ehouais]

It works.
May be this type of aliasing can be added to the documentation, because in my opinion it relates to neither of the examples given.
So this allows me circumventing the problem by just tweaking the configuration, and I'll check next snowpack versions to see whether the problem persists with this specific minified module.

[FredKSchott]

Thanks, we'll take a look at improving the docs to make this more clear.

[dazzito]

I'm getting the same error with 2.12.0 and typescript, but for auth0-react.
It has auth0-spa-js as its dependency, not sure if its the cause. I tried adding the alias but it's not working, any ideas on how I can fix this?

[snowpack] Failed to load node_modules/@auth0/auth0-react/dist/auth0-react.esm.js Unterminated string constant [snowpack] Install failed.

[FredKSchott]

Found it! Fix here: #1146

Thanks again for reporting

[dazzito]

Thanks for the quick response, it's still not working for this particular package though, I think I started getting this issue somewhere after v2.9.1

[FredKSchott]

#1146 should fix it. The test added is installing this exact package to confirm that its working.