[BUG] #98 breaks AIX

[lux01]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When using npm@8.17.0 with @npmcli/run-script@4.2.1 on AIX (Node.js 14.20.0) postinstall scripts do not run because the default shell command sh (which is an alias for the Korn shell ksh) does not support the -- syntax:

$ uname
AIX
$ oslevel -s
7200-05-03-2148
$ sh -c -- echo hello world
echo: --:  not found
$ ksh -c -- echo hello world
echo: --:  not found
$ ksh93 -c -- echo hello world

This causes failures whenevere a postinstall, or indeed any, lifecycle script needs to be run

> @my-enterprise/my-package@1.0.0 postinstall
> npm list || echo done

npm list || echo done: --:  not found
npm ERR! code 127
npm ERR! path /build/jenkins/slot0/product-build/nodejs
npm ERR! command failed
npm ERR! command sh -c -- npm list || echo done

npm ERR! A complete log of this run can be found in:
npm ERR!     /build/jenkins/slot0/.npm/_logs/2022-08-11T03_41_16_217Z-debug-0.log

Expected Behavior

I expect npm to be able to run scripts on AIX without having to install Bash and set the script-shell setting on every machine.

Steps To Reproduce

1. On AIX with Node.js v14.20.0, npm@8.17.0 and @npmcli/run-script@4.2.1
2. Without script-shell set
3. Create a new package and add a script

   "scripts": {
     "hello": "echo hello world"
   },
   

4. Run npm run hello and observe it fails with

   $ npm run hello
   
   > package@1.0.0 hello
   > echo hello world
   
   echo hello world: --:  not found
   

Environment

• npm: 8.17.0
• Node: 14.20.0
• OS: AIX 7.2 TL3
• platform: AIX

[Brooooooklyn]

And FreeBSD

[ThePrez]

And IBM i

[nlf]

version 5.1.0 of this package resolves this bug, it should be included in the next npm release later this week.