docs/pages/api-reference/stdio.md

Stdio

Built-in standard input / output & utility functions

Example usage

local stdio = require("@lune/stdio")

-- Prompting the user for basic input
local text: string = stdio.prompt("text", "Please write some text")
local confirmed: boolean = stdio.prompt("confirm", "Please confirm this action")

-- Writing directly to stdout or stderr, without the auto-formatting of print/warn/error
stdio.write("Hello, ")
stdio.write("World! ")
stdio.write("All on the same line")
stdio.ewrite("\nAnd some error text, too")

Functions

prompt

Prompts for user input using the wanted kind of prompt:

• "text" - Prompts for a plain text string from the user
• "confirm" - Prompts the user to confirm with y / n (yes / no)
• "select" - Prompts the user to select one value from a list
• "multiselect" - Prompts the user to select one or more values from a list
• nil - Equivalent to "text" with no extra arguments

Parameters

• kind The kind of prompt to use

• message The message to show the user

• defaultOrOptions The default value for the prompt, or options to choose from for selection prompts

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color

Return an ANSI string that can be used to modify the persistent output color.

Pass "reset" to get a string that can reset the persistent output color.

Example usage

stdio.write(stdio.color("red"))
print("This text will be red")
stdio.write(stdio.color("reset"))
print("This text will be normal")

Parameters

• color The color to use

Returns

• A printable ANSI string

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style

Return an ANSI string that can be used to modify the persistent output style.

Pass "reset" to get a string that can reset the persistent output style.

Example usage

stdio.write(stdio.style("bold"))
print("This text will be bold")
stdio.write(stdio.style("reset"))
print("This text will be normal")

Parameters

• style The style to use

Returns

• A printable ANSI string

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format

Formats arguments into a human-readable string with syntax highlighting for tables.

Parameters

• ... The values to format

Returns

• The formatted string

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write

Writes a string directly to stdout, without any newline.

Parameters

• s The string to write to stdout

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ewrite

Writes a string directly to stderr, without any newline.

Parameters

• s The string to write to stderr

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