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we're using the igv.js package to render IGV plots in our app. Our data is secured in google cloud storage and is accessed by our app generating a signed URL for the files in each track. However, when the igv library fetches data from these files, the URLs are transformed from the original, signed url to a different url schema which breaks the signing, and thus we get an authentication error.

Looking through the code, it appears igv-utils transforms any URL it determines is a google URL into a different format (see translateGoogleCloudURl here):

// igv-util url schema
https://storage.googleapis.com/storage/v1/b/${bucket}/o/${object}${paramString}

// expected schema - should not be modified
https://storage.googleapis.com/my-private-bucket/some/file/path/bigwig/datafile.bigWig?X-Goog-Algorithm=GOOG4-RSA-SHA256&X-Goog-Credential=some-credential-string&X-Goog-Date=20220413T031210Z&X-Goog-Expires=299&X-Goog-SignedHeaders=host&X-Goog-Signature=SOME_VALID_SIGNATURE_STRING

Is there a workaround to getting signed URLs working with the igv library?

In package.json, I think this line: "module": "src/index.txt", should be "module": "src/index.js",

We are using igv and recently we started having issues during building packages, as there is a conflict before version 1.2.7 and 1.2.6. The recent igv-utils is still marked as 1.2.6 in package.json instead 1.2.7. Because of that the yarn or npm are having issues to update to newest version.

{  "name": "igv-utils",  "version": "1.2.6",  "description": "Misc code shared by igvteam projects",  "module": "src/index.js",  "files": [    "src/**"  ],

in v1.3.0 the method isgzipped() in bgzf.js references the variable ba which is not defined.