Start-Job: Call another functions in a script - powershell

Question

After reading a lot of Q&A here on SO about Start-Job I am still can not understand what I am doing wrong...
The main idea: I need to run a lot of functions that call another functions with different parameters. Something like this:
function Base-Function {
PARAM(
[string]
$Param
)
# I will do something with $Param
}
function Copy-File {
PARAM(
[string]
$CopyFileParam
)
Base-Function -Param $CopyFileParam
}
function Read-File {
PARAM(
[string]
$ReadFileParam
)
Base-Function -Param $ReadFileParam
}
function Move-File {
PARAM(
[string]
$MoveFileParam
)
Base-Function -Param $MoveFileParam
}
So - I am trying to call Copy-File, Read-File and Move-File simultaneously:
function Main-Function {
$copyFileArgs = #{ "CopyFileParam" = 1 }
Start-Job -ScriptBlock ${Function:Copy-File} -ArgumentList $copyFileArgs
$readFileArgs = #{ "ReadFileParam" = 2 }
Start-Job -ScriptBlock ${Function:Read-File} -ArgumentList $readFileArgs
...
...
}
but of course I can not call Base-Function inside Copy-File function this way so I added -InitializationScript argument:
$init = {
function Base-Function {
PARAM(
[string]
$Param
)
# I will do something with $Param
}
}
and then I call it like this:
function Main-Function {
$copyFileArgs = #{ "CopyFileParam" = 1 }
Start-Job -ScriptBlock ${Function:Copy-File} -ArgumentList $copyFileArgs -InitializationScript $init
}
but then I get an error:
OpenError: [localhost] An error occurred while starting the background process. Error reported: An error occurred trying to start process 'C:\Program Files\PowerShell\7\pwsh.exe' with working directory 'C:\Projects\powershell\project'. The filename or extension is too long..
So my question is:
Any suggestion to simultaneously call different function that in they turn call to some in-script functions ?
Why I get this error The filename or extension is too long ?
Here is a link to powershell script for example: Gist
Run the script and let it finish
In the same shell window check for jobs: Get-Job
Check the output of running job: Receive-Job xxx
see that output of job is:
ObjectNotFound: The term 'Base-Function' is not recognized as a name of a cmdlet, function, script file, or executable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
ObjectNotFound: The term 'Base-Function' is not recognized as a name of a cmdlet, function, script file, or executable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

Answer 1

Sorry for misinforming you; the code above is correct and functional (many thanks to #mklement0 for hints and suggestions).
The actual problem that I encountered was in this line:
OpenError: [localhost] An error occurred while starting the background process.
Error reported: An error occurred trying to start process 'C:\Program Files\PowerShell\7\pwsh.exe' with working directory 'C:\Projects\powershell\project'.
The filename or extension is too long..
The filename or extension is too long.. -> this means that there is a character's length limit for what can be passed in the '-InitializationScript' parameter. You could check it in Gist example above - everything work OK.
Here is Stakoverflow question that give me this idea: Max size of ScriptBlock / InitializationScript for Start-Job in PowerShell
Once I put all my code instead in -InitializationScript parameter inside ps1 script file and then dot source it inside function - everything started working perfectly.
Thanks again #mklement0