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Common variables

ENV VAR Default Value Notes
ADDITIONAL_EXCLUDED_DIRECTORIES [] List of additional excluded directory basenames. they're excluded at any nested level.
APPLY_FIXES none Activates formatting and autofix (more info)
CLEAR_REPORT_FOLDER false Flag to clear files from report folder (usually megalinter-reports) before starting the linting process
DEFAULT_BRANCH HEAD Deprecated: The name of the repository's default branch.
DEFAULT_WORKSPACE /tmp/lint The location containing files to lint if you are running locally.
DISABLE_ERRORS false Flag to have the linter complete with exit code 0 even if errors were detected.
DISABLE List of disabled descriptors keys (more info)
DISABLE_LINTERS List of disabled linters keys (more info)
DISABLE_ERRORS_LINTERS List of enabled but not blocking linters keys (more info)
ENABLE List of enabled descriptors keys (more info)
ENABLE_LINTERS List of enabled linters keys (more info)
EXCLUDED_DIRECTORIES […many values…] List of excluded directory basenames. they're excluded at any nested level.
EXTENDS Base mega-linter.yml config file(s) to extend local configuration from. Can be a single URL or a list of .mega-linter.yml config files URLs. Later files take precedence.
FAIL_IF_MISSING_LINTER_IN_FLAVOR false If set to true, MegaLinter fails if a linter is missing in the selected flavor
FAIL_IF_UPDATED_SOURCES false If set to true, MegaLinter fails if a linter or formatter has autofixed sources, even if there are no errors
FILTER_REGEX_EXCLUDE none Regular expression defining which files will be excluded from linting (more info) .ex: .*src/test.*)
FILTER_REGEX_INCLUDE all Regular expression defining which files will be processed by linters (more info) .ex: .*src/.*)
FLAVOR_SUGGESTIONS true Provides suggestions about different MegaLinter flavors to use to improve runtime performances
FORMATTERS_DISABLE_ERRORS true Formatter errors will be reported as errors (and not warnings) if this variable is set to false
GIT_AUTHORIZATION_BEARER If set, calls git with Authorization: Bearer+value
GITHUB_WORKSPACE Base directory for REPORT_OUTPUT_FOLDER, for user-defined linter rules location, for location of linted files if DEFAULT_WORKSPACE isn't set
IGNORE_GENERATED_FILES false If set to true, MegaLinter will skip files containing @generated marker but without @not-generated marker (more info at
IGNORE_GITIGNORED_FILES true If set to true, MegaLinter will skip files ignored by git using .gitignore file
JAVASCRIPT_DEFAULT_STYLE standard Javascript default style to check/apply. standard,prettier
LINTER_RULES_PATH .github/linters Directory for all linter configuration rules.
Can be a local folder or a remote URL (ex: )
LOG_FILE mega-linter.log The file name for outputting logs. All output is sent to the log file regardless of LOG_LEVEL. Use none to not generate this file.
LOG_LEVEL INFO How much output the script will generate to the console. One of INFO, DEBUG, WARNING or ERROR.
MARKDOWN_DEFAULT_STYLE markdownlint Markdown default style to check/apply. markdownlint,remark-lint
MEGALINTER_CONFIG .mega-linter.yml Name of MegaLinter configuration file. Can be defined remotely, in that case set this environment variable with the remote URL of .mega-linter.yml config file
MEGALINTER_FILES_TO_LINT [] Comma-separated list of files to analyze. Using this variable will bypass other file listing methods
PARALLEL true Process linters in parallel to improve overall MegaLinter performance. If true, linters of same language or formats are grouped in the same parallel process to avoid lock issues if fixing the same files
PLUGINS [] List of plugin urls to install and run during MegaLinter run
POST_COMMANDS [] Custom bash commands to run after linters
PRE_COMMANDS [] Custom bash commands to run before linters
PRINT_ALPACA true Enable printing alpaca image to console
PRINT_ALL_FILES false Display all files analyzed by the linter instead of only the number
REPORT_OUTPUT_FOLDER ${GITHUB_WORKSPACE}/megalinter-reports Directory for generating report files. Set to none to not generate reports
SECURED_ENV_VARIABLES [] Additional list of secured environment variables to hide when calling linters.
SECURED_ENV_VARIABLES_DEFAULT MegaLinter & CI platforms sensitive variables List of secured environment variables to hide when calling linters. Default list. This is not recommended to override this variable, use SECURED_ENV_VARIABLES
SHOW_ELAPSED_TIME false Displays elapsed time in reports
SHOW_SKIPPED_LINTERS true Displays all disabled linters mega-linter could have run
SKIP_CLI_LINT_MODES [] Comma-separated list of cli_lint_modes. To use if you want to skip linters with some CLI lint modes (ex: file,project). Available values: file,cli_lint_mode,project.
TYPESCRIPT_DEFAULT_STYLE standard Typescript default style to check/apply. standard,prettier
VALIDATE_ALL_CODEBASE true Will parse the entire repository and find all files to validate across all types. NOTE: When set to false, only new or edited files will be parsed for validation.