From 44bdcd99464c137311adbd24268a895ee5d7babe Mon Sep 17 00:00:00 2001
From: Joe Uhren <joeuhren@protonmail.com>
Date: Tue, 7 Dec 2021 19:00:35 -0700
Subject: [PATCH] Better error msg when using older nodejs version -Older
 versions of nodejs will throw all kinds of different errors depending on
 which version you are running. This check should hopefully prevent confusion
 about why the explorer is not working by giving a clearer error message
 before the explorer starts

---
 scripts/prestart.sh | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/scripts/prestart.sh b/scripts/prestart.sh
index 2fd4520..de222ac 100644
--- a/scripts/prestart.sh
+++ b/scripts/prestart.sh
@@ -1,5 +1,38 @@
 #!/bin/bash
 
+readonly MIN_NODE_VERSION_MAJOR="14"
+readonly MIN_NODE_VERSION_MINOR="13"
+readonly MIN_NODE_VERSION_REVISION="1"
+readonly NONE="\033[00m"
+readonly RED="\033[01;31m"
+
+begins_with() { case $2 in "$1"*) true;; *) false;; esac; }
+error_message() { echo "${RED}Error:${NONE} $1" && echo && exit 1; }
+
+# Get the nodejs version
+NODE_VERSION="$(node -v)"
+NODE_VERSION_MAJOR="0"
+NODE_VERSION_MINOR="0"
+NODE_VERSION_REVISION="0"
+
+# Check if the nodejs version # is blank or a very long string as that would usually indicate a problem
+if [ "${#NODE_VERSION}" -gt 0 ] && [ "${#NODE_VERSION}" -lt 16 ]; then
+  # Remove the 'v' from the beginning of the version string
+  if begins_with "v" "${NODE_VERSION}"; then
+    NODE_VERSION=$(echo "${NODE_VERSION}" | cut -c2-${#NODE_VERSION})
+  fi
+
+  # Split node version string into major, minor and revision
+  NODE_VERSION_MAJOR="$(echo $NODE_VERSION | cut -d'.' -f1)"
+  NODE_VERSION_MINOR="$(echo $NODE_VERSION | cut -d'.' -f2)"
+  NODE_VERSION_REVISION="$(echo $NODE_VERSION | cut -d'.' -f3)"
+fi
+
+# Check if the installed nodejs is an older version than supported by the explorer
+if !([ "${NODE_VERSION_MAJOR}" -gt "${MIN_NODE_VERSION_MAJOR}" ] || ([ "${NODE_VERSION_MAJOR}" -eq "${MIN_NODE_VERSION_MAJOR}" ] && ([ "${NODE_VERSION_MINOR}" -gt "${MIN_NODE_VERSION_MINOR}" ] || ([ "${NODE_VERSION_MINOR}" -eq "${MIN_NODE_VERSION_MINOR}" ] && [ "${NODE_VERSION_REVISION}" -ge "${MIN_NODE_VERSION_REVISION}" ])))); then
+  error_message "Please install an updated version of nodejs.\n\nInstalled: $NODE_VERSION\nRequired:  $MIN_NODE_VERSION_MAJOR.$MIN_NODE_VERSION_MINOR.$MIN_NODE_VERSION_REVISION"
+fi
+
 ## Check if new module directory exists
 #if [ ! -d ./node_modules/change_to_module_dir_name ]; then
 #  # Install updated packages