Lesson 06 · 9 min
process: environment, arguments, exit code
How a program learns where it's running and with which parameters.
9 minLesson 6 of 10Practice includedAsk AI on any point
The global process object is the link to the system. process.env holds environment variables (all values are strings or undefined). process.argv holds command-line arguments: the first two are the path to node and to the script, then come yours. process.exitCode sets the exit code: 0 means success, anything else means an error, and CI or a calling script will notice.
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