Bug 1803616 introduced a new JavaScript tracer feature, which is currently off by default via `devtools.debugger.features.javascript-tracing` preference. It is documented on [Firefox source docs](https://firefox-source-docs.mozilla.org/devtools-user/javascript_tracer/index.html). We are not yet ready to enable it by default as it was mostly meant to help Web Compat diagnosis. But this feature could be useful for early adopters. It could help us expand its test coverage. Note that this feature isn't yet localized as we keep changing strings.
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Bug 1803616 introduced a new JavaScript tracer feature, which is currently off by default. It can be enabled via `devtools.debugger.features.javascript-tracing` preference -or- via the DevTools options panel. It is documented on [Firefox source docs](https://firefox-source-docs.mozilla.org/devtools-user/javascript_tracer/index.html). We are not yet ready to enable it by default as it was mostly meant to help Web Compat diagnosis. But this feature could be useful for early adopters. It could help us expand its test coverage. Note that this feature isn't yet localized as we keep changing strings.