Clears Roblox Studio's Output window. The log history is also cleared, such that LogService:GetLogHistory() will not return any entries from before the ClearOutput() call.

Logs a message at the MessageType.MessageError level and throws a structured error with optional context. As this method always throws, use pcall() to catch the error. The thrown error is a table with message, template, context, and stack fields, and a __tostring metamethod that returns the rendered message.

When a context table is provided, template placeholders like {key} in the message are replaced with the corresponding context values.

1
2
3
4
5
6
7
8
9

local LogService = game:GetService("LogService")

local ok, err = pcall(function()
	LogService:Error("Failed: {reason}", {reason = "timeout"})
end)
-- ok is false
-- err.message == "Failed: timeout"
-- err.context == {reason = "timeout"}
-- tostring(err) == "Failed: timeout"

Returns a table of tables, each with the message string, message type, and timestamp of a message that the client displays in the Output window.

Logs a message at the MessageType.MessageInfo level. When a context table is provided, template placeholders like {key} in the message are replaced with the corresponding context values. The context is preserved as structured data for display in the Developer Console and Studio's Output window.

1
2
3
4

local LogService = game:GetService("LogService")

LogService:Info("User {name} has {count} items", {name = "Alice", count = 42})
-- Output: "User Alice has 42 items"

Logs a message at the specified MessageType level. This is a general-purpose method that combines the functionality of Output(), Info(), Warn(), and Error() into a single call with an explicit message type parameter.

When messageType is MessageType.MessageError, this method throws a structured error object (same behavior as Error()).

1
2
3

local LogService = game:GetService("LogService")

LogService:Log(Enum.MessageType.MessageInfo, "Event {action}", {action = "click"})

Fires when the client outputs text.

Logs a message at the MessageType.MessageOutput level. When a context table is provided, template placeholders like {key} in the message are replaced with the corresponding context values. The context is preserved as structured data for display in the Developer Console and Studio's Output window.

1
2
3
4

local LogService = game:GetService("LogService")

LogService:Output("Player {name} joined", {name = "Alice"})
-- Output: "Player Alice joined"

Logs a message at the MessageType.MessageWarning level with optional structured context. When a context table is provided, template placeholders like {key} in the message are replaced with the corresponding context values. The context is preserved as structured data for display in the Developer Console and Studio's Output window.

1
2
3
4

local LogService = game:GetService("LogService")

LogService:Warn("Memory usage at {pct}%", {pct = 95})
-- Output: "Memory usage at 95%"