Add example config files:

Closes #268

README.md

@@ -205,6 +205,8 @@ You can use the `--config-file` flag to tell Refurb to use a different config fi
 default `pyproject.toml` file. Note that it still must be in the same form as the normal
 `pyproject.toml` file.
 
+Click [here](./docs/configs/README.md) to see some example config files.
+
 ### Ignore Checks Per File/Folder
 
 If you have a large codebase you might want to ignore errors for certain files or folders,

docs/configs/README.md

@@ -0,0 +1,6 @@
+# Config File Examples
+
+This folder contains 2 example files:
+
+* `default.toml`: Config file representing the default settings used in Refurb
+* `reference.toml`: All of the available config file settings in Refurb

docs/configs/default.toml

@@ -0,0 +1,11 @@
+# This is a config file that emulates the default settings used by Refurb.
+
+ignore = []
+load = []
+disable = ["FURB106", "FURB120", "FURB137", "FURB147", "FURB151", "FURB166", "FURB172"]
+quiet = false
+enable_all = false
+disable_all = false
+python_version = ""  # uses current python version
+format = "text"
+sort_by = "filename"

docs/configs/reference.toml

@@ -0,0 +1,37 @@
+# This is an example config file that shows all the available configuration
+# options in Refurb. You probably won't need most of them, but are here for
+# completion. Some of these configurations conflict with one another, so only
+# use this file as a reference!
+
+# The following error codes are identical
+ignore = ["FURB100", 100]
+
+# Enable FURB100
+enable = ["FURB100"]
+
+# Disable FURB100
+disable = ["FURB100"]
+
+# Enable all checks (good for new codebases)
+enable_all = true
+
+# Disable all checks (good for incrementally adopting Refurb)
+disable_all = true
+
+# Disable "use --explain" error message
+quiet = true
+
+# Specify a specific Python version to use
+python_version = "3.10"
+
+format = "github"  # or "text"
+sort_by = "filename"  # or "error"
+
+# Add custom path to look for potential Refurb plugins
+load = ["custom_module"]
+
+
+# Ignore certain checks for specific folders
+[[tool.refurb.amend]]
+path = "src"
+ignore = ["FURB123", "FURB120"]

refurb/settings.py

@@ -39,7 +39,7 @@ class Settings:
     config_file: str | None = None
     python_version: tuple[int, int] | None = None
     mypy_args: list[str] = field(default_factory=list)
-    format: Literal["text", "github", None] | None = None
+    format: Literal["text", "github"] | None = None
     sort_by: Literal["filename", "error"] | None = None
     verbose: bool = False
     timing_stats: Path | None = None