Invalid resolving of relatively specified source files

[kripod]

This is a specific issue which came to my attention while working on material-components-react.

As of commit 5d547fb879058025e0e704868f5560ce7748b64e, remap-istanbul works fine for linking compiled code to sources, but paths for the source files are invalid in coverage reports. I tried to fix this issue by PR #128 - it worked for MDC-React, but failled the CI tests of remap-istanbul.

material-components-react/coverage/coverage-final.json starts like:

{
"D:\\Development\\Projects\\material-components-react\\packages\\button\\dist\\index.jsx":{"path":"D:\\Development\\Projects\\material-components-react\\packages\\button\\dist\\index.jsx"

Instead of the desired output below:

{
"D:\\Development\\Projects\\material-components-react\\packages\\button\\src\\index.jsx":{"path":"D:\\Development\\Projects\\material-components-react\\packages\\button\\src\\index.jsx"

(The difference is between src and dist)

In order to reproduce the issue, please download MDC-React at the commit given above, and then execute the following commands:

npm i
npm run build
npm run coverage