Creates fxmanifest for esx_lib and imports with commented code.

[core]/esx_lib/fxmanifest.lua

@@ -0,0 +1,30 @@
+fx_version 'cerulean'
+game 'gta5'
+
+use_experimental_fxv2_oal 'yes'
+lua54 'yes'
+
+author 'ESX Team'
+version '0.01'
+description 'Official ESX library'
+
+files {
+    'imports.lua',
+    'imports/**/client.lua',
+    'imports/**/shared.lua',
+}
+
+shared_scripts {
+    'resource/**/shared.lua',
+}
+
+client_scripts {
+    'resource/**/client.lua',
+}
+
+server_scripts {
+    'resource/**/server.lua',
+}
+
+
+

[core]/esx_lib/imports.lua

@@ -0,0 +1,103 @@
+--! DISCLAIMER
+--[[
+    https://github.com/overextended/ox_lib
+
+    This file is licensed under LGPL-3.0 or higher <https://www.gnu.org/licenses/lgpl-3.0.en.html>
+
+    Copyright © 2025 Linden <https://github.com/thelindat>
+]]
+
+-- Const Variables
+local CONTEXT<const> = IsDuplicityVersion() and 'server' or 'client'
+local LIB_NAME<const> = 'esx_lib'
+
+-- xLib class for Language Server
+---@class xLib
+---@field name string
+---@field side 'server' | 'client'
+
+
+-------------------------------------------------
+--- Core functions for modules
+-------------------------------------------------
+
+
+local function noop() end
+
+---Loads a module into memory
+---@param self xLib
+---@param name string -- module name
+local function loadModule(self, name)
+    local directory = ('imports/%s'):format(name)
+    local chunk = LoadResourceFile(LIB_NAME, ('%s/%s.lua'):format(directory, CONTEXT)) -- returns a raw lua code as a string (SERVER/CLIENT side)
+    local shared_chunk = LoadResourceFile(LIB_NAME, ('%s/shared.lua'):format(directory)) -- returns a raw lua code as a string (SHARED)
+
+    if shared_chunk then
+        chunk = chunk and ('%s\n%s'):format(shared_chunk, chunk) or shared_chunk -- creates a string with shared and client/server code combined
+    end
+
+    if not chunk then
+        -- Early exit if the code doesn't exist 
+        return false
+    end
+
+    -- Uses @@ to specify that it comes from fivem resource instead of "normal lua script"
+    -- Second argument is a chunk name
+    local fn, err = load(chunk, ('@@%s/imports/%s/%s.lua'):format(LIB_NAME, name, CONTEXT))
+
+    if not fn or err then
+        if shared_chunk then
+            print(('[%s] Found an error while importing - %s! Try updating %s to the latest version!'):format(LIB_NAME,
+                name, LIB_NAME))
+
+            -- Tries to load only shared.lua
+            fn, err = load(shared_chunk, ('@@%s/imports/%s/%s.lua'):format(LIB_NAME, name, 'shared'))
+        end
+
+        if not fn or err then
+            return error(('Completly field importing module - %s; error - %s'):format(name, err))
+        end
+    end
+
+end
+
+---Function that is responsible for lazy loading
+---@param self xLib
+---@param index string -- name of the function/key that is called
+---@param ... unknown -- function params
+local function call(self, index, ...)
+    local module = rawget(self, index) -- uses rawget not to trigger any metamethods
+
+    -- Module Loading
+    if not module then
+        self[index] = noop -- to prevent module from loading again if doesn't exists.
+
+        module = loadModule(self, index)
+
+        if not module then
+            error(('[%s] Tried to access an invalid module - %s!'):format(LIB_NAME, index))
+        end
+    end
+
+    return module
+end
+
+
+-------------------------------------------------
+--- Environment Setup
+-------------------------------------------------
+
+
+-- Creation of xLib object
+---@class xLib
+local xLib = setmetatable({
+    name = LIB_NAME,
+    side = CONTEXT
+}, {
+    -- Lazy Loading - loads module only when accessed
+    __index = call,
+    __call = call,
+})
+
+-- Allows to xLib to be accessible in resource that imports a lib
+_ENV.xLib = xLib