Reference to nonexistent source map in compiled output

Do you want to request a feature or report a bug? Bug

What is the current behavior? I am using source-map-loader in my webpack configuration. When I load pusher via webpack, I get a warning that a source map failed to be parsed:

WARNING in ./node_modules/pusher-js/dist/web/pusher-with-encryption.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from '/Users/dev/projects/syrup/node_modules/pusher-js/dist/web/utf8.js.map' file: Error: ENOENT: no such file or directory, open '/Users/dev/projects/syrup/node_modules/pusher-js/dist/web/utf8.js.map'
Error: Failed to parse source map from '/Users/dev/projects/syrup/node_modules/pusher-js/dist/web/utf8.js.map' file: Error: ENOENT: no such file or directory, open '/Users/dev/projects/syrup/node_modules/pusher-js/dist/web/utf8.js.
map'
    at fetchFromFilesystem (/Users/dev/projects/syrup/node_modules/source-map-loader/dist/utils.js:131:11)
    at async fetchFromURL (/Users/dev/projects/syrup/node_modules/source-map-loader/dist/utils.js:232:21)
    at async Object.loader (/Users/dev/projects/syrup/node_modules/source-map-loader/dist/index.js:69:9)
ℹ ｢wdm｣: Compiled with warnings.

This is because there is a source map comment left over in dist/web/pusher.js that appears to have been copied over from a third-party library that points to a file that is not present in dist/.

https://github.com/pusher/pusher-js/blob/8e57f4ec606901a17f98941f3a2273b80eff7bea/dist/web/pusher.js#L546

What is the expected behavior? Source map comments should be stripped out when possible if they are no longer accurate.

Which versions of Pusher, and which browsers / OS are affected by this issue? Did this work in previous versions of Pusher? If so, which?

• pusher-js 7.0.3
• webpack 4.46.0
• source-map-loader 1.1.3

[simonbowen]

We’re getting the same problem.

[stale[bot]]

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