You can run headless browsers in Travis CI in a couple of ways. You can utilize an X Virtual Framebuffer, or XVFB in short form, which you can read more about in the XVFB docs (https://www.x.org/archive/X11R7.6/doc/man/man1/Xvfb.1.xhtml). We will look at using headless chrome with Puppeteer (https://pptr.dev/), which is a library developed by Google that provides a high level API to work with headless Chrome.
GUI and headless browsers in Travis CI
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