php - Is it possible to check if npm is installed in the system using composer? -

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i writing composer file. in file checking whether imagick , mysql installed or not. want make sure whether npm installed in system or not. possible? in advance.

you can use exec run npm -v , check exit code.

exec('npm -v', $foo, $exitcode);  if ($exitcode === 0) {   echo 'npm installed!'; }

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