LuaEncode

Fast table serialization library for pure Luau/Lua 5.1+

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🎉 About

LuaEncode is a simple library for serialization of Lua tables and basic data types, along with support for all of Roblox's engine data types. LuaEncode supports both Luau and Lua 5.1+

🌟 Features

• Serialization and output of basic types number, string, table, boolean, and nil for key/values
• Pretty-printing and custom indentation configuration
• Compatible with Roblox's engine data types (Instance, UDim2, Vector3, DateTime, etc..) - See Roblox Engine Data Type Coverage for more info
• Secure table iteration and value reading, with potentially untrusted inputs in-mind
• Manual cycle inserts in serialized codegen with InsertCycles
• Extended raw key/value inserts with FunctionsReturnRaw

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⚙️ Installation

• Rojo/Wally

  If you're using Rojo and Wally, you can import the package in your wally.toml:

  LuaEncode = "chadhyatt/luaencode@1.4.4"

• Roblox Marketplace

  You can also grab the LuaEncode module from the Roblox Marketplace: https://roblox.com/library/12791121865

---

🚀 Basic Usage

local LuaEncode = require("path/to/LuaEncode")

local Table = {
    foo = "bar",
    baz = {
        1,
        2,
        3,
        [5] = 5,
    },
    qux = function()
        return "\"hi!\"" -- With `FunctionsReturnRaw` set as true in options, this will output as 'qux = "hi!"'
    end,
}

local Encoded = LuaEncode(Table, {
    Prettify = true,
    FunctionsReturnRaw = true,
})

print(Encoded)

Output

{
    qux = "hi!",
    baz = {
        1,
        2,
        3,
        [5] = 5
    },
    foo = "bar"
}

---

🔨 API

LuaEncode(inputTable: {[any]: any}, options: {[string]: any}): string

Options

Argument	Type	Description
Prettify	<boolean:false>	Whether or not the output should be pretty printed
IndentCount	<number:0>	The amount of characters that should be used for indents (Note: If Prettify is set to true and this is unspecified, it will default to 4)
InsertCycles	<boolean:false>	If there are cyclic references in your table, the output will be wrapped in an anonymous function that manually sets paths to those references. (NOTE: If a key in the index path to the cycle is a reference type (e.g. table, function), the codegen can't externally set that path, and the value will have to be ignored)
OutputWarnings	<boolean:true>	If "warnings" should be placed into the output as comment blocks
FunctionsReturnRaw	<boolean:false>	If function values should be treated as callbacks that return a string to be inserted directly into the serialized output as the key/value
UseInstancePaths	<boolean:true>	If Roblox Instance values should return their Lua-accessable path for serialization. If the instance is parented under nil or isn't under game/workspace, it'll always fall back to Instance.new(ClassName)
UseFindFirstChild	<boolean:true>	When options.UseInstancePaths is true, whether or not instance paths should use FindFirstChild instead of direct indexes
SerializeMathHuge	<boolean:true>	If "infinite" (or negative-infinite) numbers should be serialized as math.huge. (uses the math global, as opposed to just a direct data type) If false, "1/0" or "-1/0" will be serialized, which is supported on all target Lua environments

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Roblox Engine Data Type Coverage

(See AllRobloxTypes.server.lua for example input and output of supported Roblox data types.)

✔ Implemented | ➖ Partially Implemented | ❌ Unimplemented | ⛔ Never

DataType	Serialized As	Implemented
buffer	buffer.fromstring()	✔
SharedTable	SharedTable.new()	✔
Axes	Axes.new()	✔
BrickColor	BrickColor.new()	✔
CFrame	CFrame.new()	✔
CatalogSearchParams	CatalogSearchParams.new()	✔
Color3	Color3.new()	✔
ColorSequence	ColorSequence.new(<ColorSequenceKeypoints>)	✔
ColorSequenceKeypoint	ColorSequenceKeypoint.new()	✔
DateTime	DateTime.fromUnixTimestamp()	✔
DockWidgetPluginGuiInfo	DockWidgetPluginGuiInfo.new()	✔
Enum	Enum.<EnumType>	✔
EnumItem	Enum.<EnumType>.<EnumItem>	✔
Enums	Enum	✔
Faces	Faces.new()	✔
FloatCurveKey	FloatCurveKey.new()	✔
Font	Font.new()	✔
Instance	Instance.new()	✔
NumberRange	NumberRange.new()	✔
NumberSequence	NumberSequence.new(<NumberSequenceKeypoints>)	✔
NumberSequenceKeypoint	NumberSequenceKeypoint.new()	✔
OverlapParams	OverlapParams.new()	✔
Path2DControlPoint	Path2DControlPoint.new()	✔
PathWaypoint	PathWaypoint.new()	✔
PhysicalProperties	PhysicalProperties.new()	✔
RBXScriptConnection	N/A	⛔
RBXScriptSignal	N/A	⛔
Random	Random.new()	✔
Ray	Ray.new()	✔
RaycastParams	RaycastParams.new()	✔
RaycastResult	N/A	⛔
Rect	Rect.new()	✔
Region3	Region3.new()	✔
Region3int16	Region3int16.new()	✔
TweenInfo	TweenInfo.new()	✔
RotationCurveKey	RotationCurveKey.new()	✔
Secret	N/A	⛔
UDim	UDim.new()	✔
UDim2	UDim2.new()	✔
Vector2	Vector2.new()	✔
Vector2int16	Vector2int16.new()	✔
Vector3	Vector3.new()	✔
Vector3int16	Vector3int16.new()	✔

(See official Roblox data type documentation here)

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🏛️ License

MIT License

Copyright (c) 2022-2025 Chad Hyatt <chad@hyatt.page>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.