Unhandled error in debug adapter - Unhandled promise rejection: TypeError: Cannot read property 'line' of null

[Deilan]

• VSCode Version: Code 1.19.3 (7c4205b, 2018-01-25T10:36:34.867Z)
• OS Version: Windows_NT x64 10.0.15063
• Extensions:

Extension	Author (truncated)	Version
debugger-for-chrome	msj	4.0.0

Debug Console's output:

******** Unhandled error in debug adapter - Unhandled promise rejection: TypeError: Cannot read property 'line' of null
    at ChromeDebugAdapter.<anonymous> (C:\Users\Deilan\.vscode\extensions\msjsdiag.debugger-for-chrome-4.0.0\node_modules\vscode-chrome-debug-core\out\src\chrome\chromeDebugAdapter.js:575:61)
    at Generator.next (<anonymous>)
    at C:\Users\Deilan\.vscode\extensions\msjsdiag.debugger-for-chrome-4.0.0\node_modules\vscode-chrome-debug-core\out\src\chrome\chromeDebugAdapter.js:10:71
    at Promise (<anonymous>)
    at __awaiter (C:\Users\Deilan\.vscode\extensions\msjsdiag.debugger-for-chrome-4.0.0\node_modules\vscode-chrome-debug-core\out\src\chrome\chromeDebugAdapter.js:6:12)
    at details.forEach (C:\Users\Deilan\.vscode\extensions\msjsdiag.debugger-for-chrome-4.0.0\node_modules\vscode-chrome-debug-core\out\src\chrome\chromeDebugAdapter.js:566:48)
    at Array.forEach (native)
    at ChromeDebugAdapter.<anonymous> (C:\Users\Deilan\.vscode\extensions\msjsdiag.debugger-for-chrome-4.0.0\node_modules\vscode-chrome-debug-core\out\src\chrome\chromeDebugAdapter.js:566:25)
    at Generator.next (<anonymous>)
    at fulfilled (C:\Users\Deilan\.vscode\extensions\msjsdiag.debugger-for-chrome-4.0.0\node_modules\vscode-chrome-debug-core\out\src\chrome\chromeDebugAdapter.js:7:58)

---

Steps to Reproduce:

1. Angular CLI 1.6.5 project
2. npm start
3. Launch debugger

[roblourens]

This implies that sourcemaps are messed up in a strange way. Can you share the project with me? Or should I see it with a clean angular CLI project?

[Deilan]

@roblourens here you are: https://github.com/deilan-issues-samples/vscode-issue-42162

1. npm install
2. npm start

I am able to reproduce it on 2 different Windows 10 x64 computers.

[roblourens]

Thanks for the sample project. It's caused by a script in the sourcemap with a weird name - ["/Users/roblou/Documents/vscode-issue-42162/node_modules/moment/locale ^\\.\\/.*$"]. Looking at your build, I have no idea where the pattern at the end comes from. But it exposes a slight problem with how source paths are handled.

[roblourens]

Fixed last month by microsoft/vscode-chrome-debug-core@c8b3814