feat(linter): Add support for ignorePatterns property within config file (#7092)

This could probably use some tests, but I'm not really sure what exactly
should be tested.

Will leave a review with a few comments on things that might need a
different approach.

Closes #7032.

apps/oxlint/fixtures/config_ignore_patterns/ignore_directory/eslintrc.json

@@ -0,0 +1,5 @@
+{
+  "ignorePatterns": [
+    "tests/**"
+  ]
+}

apps/oxlint/fixtures/config_ignore_patterns/ignore_directory/main.js

@@ -0,0 +1 @@
+

apps/oxlint/fixtures/config_ignore_patterns/ignore_extension/eslintrc.json

@@ -0,0 +1,5 @@
+{
+  "ignorePatterns": [
+    "*.js"
+  ]
+}

apps/oxlint/fixtures/print_config/ban_rules/expect.json

@@ -40,5 +40,6 @@
   "env": {
     "builtin": true
   },
-  "globals": {}
+  "globals": {},
+  "ignorePatterns": []
 }

apps/oxlint/fixtures/print_config/normal/expect.json

@@ -33,5 +33,6 @@
   "env": {
     "builtin": true
   },
-  "globals": {}
+  "globals": {},
+  "ignorePatterns": []
 }

apps/oxlint/src/lint.rs

@@ -102,11 +102,6 @@ impl Runner for LintRunner {
             .copied()
             .collect::<Vec<&'static str>>();
 
-        let paths =
-            Walk::new(&paths, &ignore_options).with_extensions(Extensions(extensions)).paths();
-
-        let number_of_files = paths.len();
-
         let config_search_result = Self::find_oxlint_config(&self.cwd, &basic_options.config);
 
         if let Err(err) = config_search_result {
@@ -115,6 +110,17 @@ impl Runner for LintRunner {
 
         let mut oxlintrc = config_search_result.unwrap();
 
+        let ignore_paths = oxlintrc
+            .ignore_patterns
+            .iter()
+            .map(|value| oxlintrc.path.parent().unwrap().join(value))
+            .collect::<Vec<_>>();
+        let paths = Walk::new(&paths, &ignore_options, &ignore_paths)
+            .with_extensions(Extensions(extensions))
+            .paths();
+
+        let number_of_files = paths.len();
+
         enable_plugins.apply_overrides(&mut oxlintrc.plugins);
 
         let oxlintrc_for_print =
@@ -750,4 +756,24 @@ mod test {
         assert_eq!(result.number_of_warnings, 2);
         assert_eq!(result.number_of_errors, 2);
     }
+
+    #[test]
+    fn test_config_ignore_patterns_extension() {
+        let result = test(&[
+            "-c",
+            "fixtures/config_ignore_patterns/ignore_extension/eslintrc.json",
+            "fixtures/config_ignore_patterns/ignore_extension",
+        ]);
+        assert_eq!(result.number_of_files, 1);
+    }
+
+    #[test]
+    fn test_config_ignore_patterns_directory() {
+        let result = test(&[
+            "-c",
+            "fixtures/config_ignore_patterns/ignore_directory/eslintrc.json",
+            "fixtures/config_ignore_patterns/ignore_directory",
+        ]);
+        assert_eq!(result.number_of_files, 1);
+    }
 }

apps/oxlint/src/walk.rs

@@ -70,7 +70,11 @@ impl ignore::ParallelVisitor for WalkCollector {
 impl Walk {
     /// Will not canonicalize paths.
     /// # Panics
-    pub fn new(paths: &[PathBuf], options: &IgnoreOptions) -> Self {
+    pub fn new(
+        paths: &[PathBuf],
+        options: &IgnoreOptions,
+        config_ignore_patterns: &[PathBuf],
+    ) -> Self {
         assert!(!paths.is_empty(), "At least one path must be provided to Walk::new");
 
         let mut inner = ignore::WalkBuilder::new(
@@ -89,17 +93,24 @@ impl Walk {
         if !options.no_ignore {
             inner.add_custom_ignore_filename(&options.ignore_path);
 
+            let mut override_builder = OverrideBuilder::new(Path::new("/"));
             if !options.ignore_pattern.is_empty() {
-                let mut override_builder = OverrideBuilder::new(Path::new("/"));
                 for pattern in &options.ignore_pattern {
                     // Meaning of ignore pattern is reversed
                     // <https://docs.rs/ignore/latest/ignore/overrides/struct.OverrideBuilder.html#method.add>
                     let pattern = format!("!{pattern}");
                     override_builder.add(&pattern).unwrap();
                 }
-                let overrides = override_builder.build().unwrap();
-                inner.overrides(overrides);
             }
+
+            if !config_ignore_patterns.is_empty() {
+                for pattern in config_ignore_patterns {
+                    let pattern = format!("!{}", pattern.to_str().unwrap());
+                    override_builder.add(&pattern).unwrap();
+                }
+            }
+
+            inner.overrides(override_builder.build().unwrap());
         }
         // Turning off `follow_links` because:
         // * following symlinks is a really slow syscall
@@ -155,7 +166,7 @@ mod test {
             symlinks: false,
         };
 
-        let mut paths = Walk::new(&fixtures, &ignore_options)
+        let mut paths = Walk::new(&fixtures, &ignore_options, &[])
             .with_extensions(Extensions(["js", "vue"].to_vec()))
             .paths()
             .into_iter()

crates/oxc_language_server/src/main.rs

@@ -88,7 +88,6 @@ enum SyntheticRunLevel {
 impl LanguageServer for Backend {
     async fn initialize(&self, params: InitializeParams) -> Result<InitializeResult> {
         self.init(params.root_uri)?;
-        self.init_ignore_glob().await;
         let options = params.initialization_options.and_then(|mut value| {
             let settings = value.get_mut("settings")?.take();
             serde_json::from_value::<Options>(settings).ok()
@@ -117,7 +116,8 @@ impl LanguageServer for Backend {
             None
         };
 
-        self.init_linter_config().await;
+        let oxlintrc = self.init_linter_config().await;
+        self.init_ignore_glob(oxlintrc).await;
         Ok(InitializeResult {
             server_info: Some(ServerInfo { name: "oxc".into(), version: None }),
             offset_encoding: None,
@@ -411,7 +411,7 @@ impl Backend {
         Ok(())
     }
 
-    async fn init_ignore_glob(&self) {
+    async fn init_ignore_glob(&self, oxlintrc: Option<Oxlintrc>) {
         let uri = self
             .root_uri
             .get()
@@ -447,6 +447,17 @@ impl Backend {
                 }
             }
         }
+
+        if let Some(oxlintrc) = oxlintrc {
+            if !oxlintrc.ignore_patterns.is_empty() {
+                let mut builder =
+                    ignore::gitignore::GitignoreBuilder::new(oxlintrc.path.parent().unwrap());
+                for entry in &oxlintrc.ignore_patterns {
+                    builder.add_line(None, entry).expect("Failed to add ignore line");
+                }
+                gitignore_globs.push(builder.build().unwrap());
+            }
+        }
     }
 
     #[allow(clippy::ptr_arg)]
@@ -470,12 +481,12 @@ impl Backend {
         .await;
     }
 
-    async fn init_linter_config(&self) {
+    async fn init_linter_config(&self) -> Option<Oxlintrc> {
         let Some(Some(uri)) = self.root_uri.get() else {
-            return;
+            return None;
         };
         let Ok(root_path) = uri.to_file_path() else {
-            return;
+            return None;
         };
         let mut config_path = None;
         let config = root_path.join(self.options.lock().await.get_config_path().unwrap());
@@ -484,16 +495,17 @@ impl Backend {
         }
         if let Some(config_path) = config_path {
             let mut linter = self.server_linter.write().await;
+            let config = Oxlintrc::from_file(&config_path)
+                .expect("should have initialized linter with new options");
             *linter = ServerLinter::new_with_linter(
-                LinterBuilder::from_oxlintrc(
-                    true,
-                    Oxlintrc::from_file(&config_path)
-                        .expect("should have initialized linter with new options"),
-                )
-                .with_fix(FixKind::SafeFix)
-                .build(),
+                LinterBuilder::from_oxlintrc(true, config.clone())
+                    .with_fix(FixKind::SafeFix)
+                    .build(),
             );
+            return Some(config);
         }
+
+        None
     }
 
     async fn handle_file_update(&self, uri: Url, content: Option<String>, version: Option<i32>) {

crates/oxc_linter/src/builder.rs

@@ -95,6 +95,7 @@ impl LinterBuilder {
             rules: oxlintrc_rules,
             overrides,
             path,
+            ignore_patterns: _,
         } = oxlintrc;
 
         let config = LintConfig { plugins, settings, env, globals, path: Some(path) };

crates/oxc_linter/src/config/oxlintrc.rs

@@ -88,6 +88,9 @@ pub struct Oxlintrc {
     /// Absolute path to the configuration file.
     #[serde(skip)]
     pub path: PathBuf,
+    /// Globs to ignore during linting. These are resolved from the configuration file path.
+    #[serde(rename = "ignorePatterns")]
+    pub ignore_patterns: Vec<String>,
 }
 
 impl Oxlintrc {

crates/oxc_linter/src/snapshots/schema_json.snap

@@ -1,7 +1,6 @@
 ---
 source: crates/oxc_linter/src/lib.rs
 expression: json
-snapshot_kind: text
 ---
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
@@ -37,6 +36,14 @@ snapshot_kind: text
         }
       ]
     },
+    "ignorePatterns": {
+      "description": "Globs to ignore during linting. These are resolved from the configuration file path.",
+      "default": [],
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    },
     "overrides": {
       "description": "Add, remove, or otherwise reconfigure rules for specific files or groups of files.",
       "allOf": [

npm/oxlint/configuration_schema.json

@@ -32,6 +32,14 @@
         }
       ]
     },
+    "ignorePatterns": {
+      "description": "Globs to ignore during linting. These are resolved from the configuration file path.",
+      "default": [],
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    },
     "overrides": {
       "description": "Add, remove, or otherwise reconfigure rules for specific files or groups of files.",
       "allOf": [

tasks/website/src/linter/snapshots/schema_markdown.snap

@@ -1,7 +1,6 @@
 ---
 source: tasks/website/src/linter/json_schema.rs
 expression: snapshot
-snapshot_kind: text
 ---
 # Oxlint Configuration File
 
@@ -161,6 +160,15 @@ Globals can be disabled by setting their value to `"off"`. For example, in an en
 You may also use `"readable"` or `false` to represent `"readonly"`, and `"writeable"` or `true` to represent `"writable"`.
 
 
+## ignorePatterns
+
+type: `string[]`
+
+default: `[]`
+
+Globs to ignore during linting. These are resolved from the configuration file path.
+
+
 ## overrides
 
 type: `array`