stylua

StyLua is an opinionated code formatter for Lua that automatically formats Lua code to enforce consistent style. It removes the need for debates about formatting by providing sensible defaults while still allowing some configuration.

Key Features:

Opinionated formatting with sensible defaults for consistent Lua code style
Automatic indentation and spacing management
Line break optimization for improved code readability
Configurable options via stylua.toml for project-specific needs
Lua 5.1-5.4 support covering all modern Lua versions
LuaJIT compatibility for Just-In-Time compiled Lua code
Roblox Luau support with specialized formatting rules
Fast performance for formatting large codebases quickly
Ignore comments to exclude specific code sections from formatting
Range formatting to format only selected portions of files

stylua documentation

Version in MegaLinter: 2.0.0
Visit Official Web Site
See How to configure stylua rules
See How to disable stylua rules in files
See Index of problems detected by stylua

Configuration in MegaLinter

Enable stylua by adding LUA_STYLUA in ENABLE_LINTERS variable
Disable stylua by adding LUA_STYLUA in DISABLE_LINTERS variable

Variable	Description	Default value
LUA_STYLUA_ARGUMENTS	User custom arguments to add in linter CLI call Ex: `-s --foo "bar"`
LUA_STYLUA_COMMAND_REMOVE_ARGUMENTS	User custom arguments to remove from command line before calling the linter Ex: `-s --foo "bar"`
LUA_STYLUA_FILTER_REGEX_INCLUDE	Custom regex including filter Ex: `(src\\|lib)`	Include every file
LUA_STYLUA_FILTER_REGEX_EXCLUDE	Custom regex excluding filter Ex: `(test\\|examples)`	Exclude no file
LUA_STYLUA_CLI_LINT_MODE	Override default CLI lint mode - `file`: Calls the linter for each file - `project`: Call the linter from the root of the project	`file`
LUA_STYLUA_FILE_EXTENSIONS	Allowed file extensions. `"*"` matches any extension, `""` matches empty extension. Empty list excludes all files Ex: `[".py", ""]`	`[".lua"]`
LUA_STYLUA_FILE_NAMES_REGEX	File name regex filters. Regular expression list for filtering files by their base names using regex full match. Empty list includes all files Ex: `["Dockerfile(-.+)?", "Jenkinsfile"]`	Include every file
LUA_STYLUA_PRE_COMMANDS	List of bash commands to run before the linter	None
LUA_STYLUA_POST_COMMANDS	List of bash commands to run after the linter	None
LUA_STYLUA_UNSECURED_ENV_VARIABLES	List of env variables explicitly not filtered before calling LUA_STYLUA and its pre/post commands	None
LUA_STYLUA_CONFIG_FILE	stylua configuration file nameUse `LINTER_DEFAULT` to let the linter find it	`stylua.toml`
LUA_STYLUA_RULES_PATH	Path where to find linter configuration file	Workspace folder, then MegaLinter default rules
LUA_STYLUA_DISABLE_ERRORS	Run linter but consider errors as warnings	`false`
LUA_STYLUA_DISABLE_ERRORS_IF_LESS_THAN	Maximum number of errors allowed	`0`
LUA_STYLUA_CLI_EXECUTABLE	Override CLI executable	`['stylua']`

IDE Integration

Use stylua in your favorite IDE to catch errors before MegaLinter !

IDE	Extension Name	Install
neovim	['nvim-lint', 'none-ls', 'stylua-nvim', 'stylua.nvim']	Visit Web Site
Visual Studio Code	Stylua
Sublime Text	Sublime-Pretty-Lua	Visit Web Site

MegaLinter Flavors

This linter is available in the following flavors

	Flavor	Description	Embedded linters	Info
	all	Default MegaLinter Flavor	127

Behind the scenes

How are identified applicable files

File extensions: .lua

How the linting is performed

stylua is called one time by identified file (file CLI lint mode)

Example calls

stylua --check myfile.lua

stylua --config-path chktexrc.toml --check myfile.lua

Help content

stylua 2.0.0
A utility to format Lua code

USAGE:
    stylua [OPTIONS] [FILES]...

ARGS:
    <FILES>...    A list of files to format

OPTIONS:
    -a, --allow-hidden
            Whether to traverse hidden files/directories

    -c, --check
            Runs in 'check' mode

        --color <COLOR>
            Use colored output [default: Auto] [possible values: Always, Auto, Never]

    -f, --config-path <CONFIG_PATH>
            Specify path to stylua.toml configuration file

    -g, --glob <GLOB>
            Glob patterns to test against which files to check

    -h, --help
            Print help information

        --no-editorconfig
            Disables the EditorConfig feature

        --num-threads <NUM_THREADS>
            The number of threads to use to format files in parallel [default: 4]

        --output-format <OUTPUT_FORMAT>
            Configures the diff output when using 'check' mode [default: Standard] [possible values:
            Standard, Unified, Json, Summary]

        --range-end <RANGE_END>
            An ending range to format files, given as a byte offset from the beginning of the file

        --range-start <RANGE_START>
            A starting range to format files, given as a byte offset from the beginning of the file

        --respect-ignores
            Respect .styluaignore and glob matching for file paths provided directly to the tool

    -s, --search-parent-directories
            Search parent directories for stylua.toml, if not found in current directory. Ignored if
            config_path is provided

        --stdin-filepath <STDIN_FILEPATH>
            Specify the location of the file that is being passed into stdin. Ignored if not taking
            in input from stdin

    -v, --verbose
            Enables verbose output

    -V, --version
            Print version information

        --verify
            Verifies the output correctness after formatting

FORMATTING OPTIONS:
        --call-parentheses <CALL_PARENTHESES>
            Specify whether to apply parentheses on function calls with single string or table arg
            [possible values: Always, NoSingleString, NoSingleTable, None, Input]

        --collapse-simple-statement <COLLAPSE_SIMPLE_STATEMENT>
            Specify whether to collapse simple statements [possible values: Never, FunctionOnly,
            ConditionalOnly, Always]

        --column-width <COLUMN_WIDTH>
            The column width to use to attempt to wrap lines

        --indent-type <INDENT_TYPE>
            The type of indents to use [possible values: Tabs, Spaces]

        --indent-width <INDENT_WIDTH>
            The width of a single indentation level

        --line-endings <LINE_ENDINGS>
            The type of line endings to use [possible values: Unix, Windows]

        --quote-style <QUOTE_STYLE>
            The style of quotes to use in string literals [possible values: AutoPreferDouble,
            AutoPreferSingle, ForceDouble, ForceSingle]

        --sort-requires
            Enable requires sorting

        --space-after-function-names <SPACE_AFTER_FUNCTION_NAMES>
            [possible values: Never, Definitions, Calls, Always]

        --syntax <SYNTAX>
            The type of Lua syntax to parse [possible values: All, Lua51]

Installation on mega-linter Docker image

Dockerfile commands :

# Parent descriptor install
RUN wget --tries=5 https://www.lua.org/ftp/lua-5.3.5.tar.gz -O - -q | tar -xzf - \
    && cd lua-5.3.5 \
    && make linux \
    && make install \
    && cd .. && rm -r lua-5.3.5/

# Linter install
# renovate: datasource=crate depName=stylua
ARG CARGO_STYLUA_VERSION=2.0.0

Cargo packages (Rust):
- stylua@2.0.0