Parses PICO-8's peculiar Lua into an AST, stores the result as a JSON file. See https://github.com/boolangery/py-lua-parser as for the AST itself.

pico8_ast_json.ps1

#!/usr/bin/env pwsh
# .SYNOPSIS
# Parses a .p8 file into an AST, stores the result as JSON.
param ([Parameter(Mandatory)][string]$InputP8, [Parameter(Mandatory)][string]$OutputJSON)
$FileInfo = Get-Item $InputP8
$OLDPWD = $PWD
Set-Location $FileInfo.Directory
$TempFile = "_tmp$(Get-Random).txt"
"pico-8 cartridge`n`n__lua__`nprinth([=[`n#include $($FileInfo.Name)`n]=],'$TempFile',true)" > $TempFile
pico8 -root_path "$PWD" -x $TempFile > $null
python3 -m pip install luaparser > $null
python3 -m luaparser $TempFile -o "$OLDPWD/$OutputJSON"
Remove-Item $TempFile
Set-Location $OLDPWD

pico8_ast_json.sh

#!/usr/bin/env sh
# .SYNOPSIS
# Parses a .p8 file into an AST, stores the result as JSON.
INPUT_P8="$1"
OUTPUT_JSON="$2"
cd $(dirname "$INPUT_P8")
TEMP_FILE="_tmp$$.txt"
printf "pico-8 cartridge\n\n__lua__\nprinth([=[\n#include $(basename "$INPUT_P8")\n]=],'$TEMP_FILE',true)" > $TEMP_FILE
trap "rm $TEMP_FILE ; cd '$OLDPWD'" EXIT
pico8 -root_path "$PWD" -x $TEMP_FILE > /dev/null
python3 -m pip install luaparser > /dev/null
python3 -m luaparser $TEMP_FILE -o "$OLDPWD/$OUTPUT_JSON"