Enable soucemaps while run 'yarn debug-test'

[flyOstrich]

the question is :
when i ran 'yarn debug-test' and debug from chrome://inspect , i got minified codes like this:
it('should return the only child', function () { var instance = React.createElement(WrapComponent, { __source: { fileName: _jsxFileName, lineNumber: 70 } }, React.createElement('span', { __source: { fileName: _jsxFileName, lineNumber: 71 } })); expect(React.Children.only(instance.props.children)).toEqual(React.createElement('span', { __source: { fileName: _jsxFileName, lineNumber: 74 } })); });
actually,i want to get source code when i debug test , so i added sourceMaps:"inline" to enable this feature

[sizebot]

No significant bundle size changes to report.

Generated by 🚫 dangerJS

[zzuu666]

This PR is useful. When I run yarn debug-test and wanna debug ReactDOM.render(<div />, container). but I got an error position in source code.
I added same code as this PR, my problem is solved.

Debug runtime env:
node: 10.15.1
yarn: 1.15.2
babel/*: 7.x

[gaearon]

Can you add screenshots? I tried this and still got garbled code.

[zzuu666]

This is my test debug code:

without sourceMap: inline, I don't get the correct position:

with sourceMap: inline, It's working:

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contribution.

[stale]

Closing this pull request after a prolonged period of inactivity. If this issue is still present in the latest release, please ask for this pull request to be reopened. Thank you!