Node: why does cli option --no-deprecation, --trace-deprecation take no effect in my script

[LiuHD]

• Version: v6.11.4
• Platform: window 64bit
• Subsystem: cli option

There is my node code below:

var Util = require('util');
Util.print('fdfasd');

And I have excuted it in cli mode with option --no-deprecation or --trace-deprecation, but it takes no effect.

I mean that, if I excute it with --no-deprecation, it would not print any deprecation warning. If I excute it with --trace-deprecation, it would print trace about the usage of Util.print.
I have search with google for half of a day, but no results. Sorry about my poor English.

[joyeecheung]

Sorry that I am not following what

I mean that, if I excute it with --no-deprecation, it would not print any deprecation warning. If I excute it with --trace-deprecation, it would print trace about the usage of Util.print.

means. Those seem to be expected behaviors. This is what I got with v6.11.4 on MacOS, are these logs similar to what you are seeing on your machine?

▶ node test.js
fdfasd(node:19036) DeprecationWarning: util.print is deprecated. Use console.log instead.

▶ node --no-deprecation test.js
fdfasd%

▶ node --trace-deprecation test.js
fdfasd(node:19164) DeprecationWarning: util.print is deprecated. Use console.log instead.
    at Object.<anonymous> (/Users/joyee/projects/node-test/16139/test.js:2:6)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.runMain (module.js:604:10)
    at run (bootstrap_node.js:383:7)
    at startup (bootstrap_node.js:149:9)
    at bootstrap_node.js:496:3

[LiuHD]

I have try again use comman like yours and it success.
I find that the problem roots in the place of --option, when I use the option after script_name ,like node test.js --no-deprecation, it take no effect. When I use the option before script_name ,it works.
Although It works but I can't understand why the location of option metters.
Thanks for your replay.

[Fishrock123]

node test.js --no-deprecation

In this example, --no-deprecation is passed to the test.js script via process.argv rather than being passed to node itself.

You need to pass it before the script file.

[Fishrock123]

(I think this is answered.)