V8 itself doesn't do anything with stdin, because ECMAScript doesn't. It's up to embedders of V8 to provide integration with desired I/O channels. The d8 shell (which I think is what JSVU gives you) does implement stdin reading via the readline() function, and in an interactive session it works for me:
$ /usr/bin/env -S out/x64.release/d8 V8 version 12.8.0 (candidate) d8> var a = readline() hello world <<< This is what I typed undefined d8> a "hello world" Piping JS programs into d8 also works, though the printed output is a bit weird in that case: $ echo "2+3" | /usr/bin/env -S out/x64.release/d8 V8 version 12.8.0 (candidate) d8> 5 d8> That said, d8 is intended for our team's testing and development needs, it doesn't aim or claim to be a general-purpose shell. You can extend it for your needs if you want, or you can take a look at more feature-rich V8 embedders such as Node. On Thu, Jun 13, 2024 at 7:51 AM guest271314 <guest271...@gmail.com> wrote: > I'm launching `v8` from a non-TTY program, e.g., > > #!/usr/bin/env -S /home/user/.jsvu/engines/v8/v8 > > > readline() is not reading STDOUT from the launching process. > > read() isn't reading from /dev/stdin or /proc/self/fd/0 either. > > How to read from /dev/stdin and /proc/self/fd/0 in v8? > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/1c15ed97-8fe6-49f6-a7a4-7420dffb7923n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/1c15ed97-8fe6-49f6-a7a4-7420dffb7923n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/CAKSzg3TTqmU5so4Pt%2BEnnGFj3YyYH_H6JtKWhWfzX20xeWs8oQ%40mail.gmail.com.
