HTML reporter reports 'Unable to lookup source'

[jackson-at-bentley]

Link to bug demonstration repository

🍫☕️

Expected behavior

I attempted to follow the installation instructions at istanbul.js.org. I expect the HTML report generated by nyc mocha to have working links to view the coverage of each source file.

Observed behavior

observed.mov

Unable to lookup source: /Users/jackson/Documents/mocha/src/file:/Users/jackson/Documents/mocha/src/hello.ts (ENOENT: no such file or directory, open '/Users/jackson/Documents/mocha/src/file:/Users/jackson/Documents/mocha/src/hello.ts')
Error: Unable to lookup source: /Users/jackson/Documents/mocha/src/file:/Users/jackson/Documents/mocha/src/hello.ts (ENOENT: no such file or directory, open '/Users/jackson/Documents/mocha/src/file:/Users/jackson/Documents/mocha/src/hello.ts')
    at Context.defaultSourceLookup [as sourceFinder] (/Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/context.js:17:15)
    at Context.getSource (/Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/context.js:71:21)
    at annotateSourceCode (/Users/jackson/Documents/mocha/node_modules/istanbul-reports/lib/html/annotator.js:232:40)
    at HtmlReport.onDetail (/Users/jackson/Documents/mocha/node_modules/istanbul-reports/lib/html/index.js:414:33)
    at Visitor.value (/Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/tree.js:38:38)
    at ReportNode.visit (/Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/tree.js:88:21)
    at /Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/tree.js:92:19
    at Array.forEach ()
    at ReportNode.visit (/Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/tree.js:91:28)
    at ReportTree.visit (/Users/jackson/Documents/mocha/node_modules/istanbul-lib-report/lib/tree.js:127:24)

Troubleshooting steps

• Similar to the behavior described in this issue from 2017.
• The call to remapCoverage(map.data) in nyc seems to be clobbering the paths in the source map.

Environment information

  System:
    OS: macOS 12.4
    CPU: (8) arm64 Apple M1
    Memory: 272.58 MB / 16.00 GB
  Binaries:
    Node: 18.4.0 - /opt/homebrew/bin/node
    Yarn: 1.22.19 - /opt/homebrew/bin/yarn
    npm: 8.12.1 - /opt/homebrew/bin/npm
  npmPackages:
    nyc: ^15.1.0 => 15.1.0
    source-map-support: ^0.5.21 => 0.5.21
    ts-node: ^10.8.1 => 10.8.1
    typescript: ^4.7.4 => 4.7.4

[amykhaylyshyn]

I'm getting the same error :(

[urska19]

I was having the same issue. Downgrading to ts-node: 10.8.0 resolved it for me. Hope it helps.

[pfedan]

same error here.

Downgrading to ts-node: 10.8.0 resolved it for me.

helped!

[pfedan]

@coreyfarrell @bcoe
There's an ongoing discussion about this problem on ts-node's side: TypeStrong/ts-node#1790

According to them, it might as well be a bug on nyc's side.

[pfedan]

It seems that the change is about to be rolled back: TypeStrong/ts-node#1797 (comment)

[jackson-at-bentley]

Closing, this has been fixed in ts-node.