Cannot set a breakpoint on Angular application

Question

On Firefox Quantum (57.0 64-bit), when I try to set a breakpoint on an Angular application using the Debugger pane, the breakpoint immediately disappear and it is not actually set.

See a video of the behavior here: https://youtu.be/aBQ0wOeIYYQ

For the video I created a new angular project with angular-cli:

Angular CLI: 1.5.0
Node: 8.4.0
OS: darwin x64

Then I serve the project using ng serve.

I tried on Chrome and the breakpoint is correctly set.

Answer 1

try putting a deugger statement in your code. Just open the developer tools and it should stop on that line when it hits it.