Question: passing code via pipe?

[amilajack]

I'm using the following code to pass javascript source code (as a string) as stdout to anther command.

exec(`echo "${jsCodeHere}" | someOtherCommand`)

The issue with this is there are a bunch of issues caused by the syntax of javascript being evaluated by bash. Is there a better way of doing this?

[nfischer]

Did you look into our support for pipes? The built-in echo should treat text normally, and then you can pipe it via echo(code).exec(cmd). Let me know if this helps!

You can also use the ShellString constructor and it'll be like echo, except it won't print to stdout.

[amilajack]

This worked perfectly! Thanks!

[amilajack]

It seems like echo(code).exec(cmd) doesn't support the { silent: true } option. Does it?

[nfischer]

Exec should. Echo does not support it yet (but I can add support)

[amilajack]

So adding support will suppress the output but still pass it to exec?

[nfischer]

For now, the recommended workaround is (new shell.ShellString("text you don't want to print to the console")).exec(cmd).

But I'll probably write something up that's more intuitive, since we get this issue a lot. If that works for you, feel free to close this issue (we have some other issues related to this, see #146 and #501).

[ariporad]

@nfischer: Suggestion (and I'm happy to open a PR for this): we could make a shell.pipe(str) method, that does this:

shell.pipe = function (str) {
    return new shell.ShellString(str);
}