feat(cli): Allow to set a minimum level for autofixes

.changeset/busy-olives-hang.md

@@ -0,0 +1,5 @@
+---
+"@biomejs/biome": patch
+---
+
+Fixed #7772: `--fix` now respects `--diagnostic-level`

crates/biome_cli/src/commands/check.rs

@@ -8,6 +8,7 @@ use biome_configuration::formatter::FormatterEnabled;
 use biome_configuration::{Configuration, FormatterConfiguration, LinterConfiguration};
 use biome_console::Console;
 use biome_deserialize::Merge;
+use biome_diagnostics::Severity;
 use biome_fs::FileSystem;
 use biome_service::{Workspace, WorkspaceError, configuration::LoadedConfiguration};
 use std::ffi::OsString;
@@ -26,6 +27,7 @@ pub(crate) struct CheckCommandPayload {
     pub(crate) staged: bool,
     pub(crate) changed: bool,
     pub(crate) since: Option<String>,
+    pub(crate) fix_level: Severity,
 }
 
 impl LoadEditorConfig for CheckCommandPayload {
@@ -144,6 +146,7 @@ impl CommandRunner for CheckCommandPayload {
             vcs_targeted: (self.staged, self.changed).into(),
             enforce_assist: self.enforce_assist,
             skip_parse_errors: cli_options.skip_parse_errors,
+            fix_level: self.fix_level,
         })
         .set_report(cli_options))
     }

crates/biome_cli/src/commands/lint.rs

@@ -11,6 +11,7 @@ use biome_configuration::vcs::VcsConfiguration;
 use biome_configuration::{Configuration, FilesConfiguration, LinterConfiguration};
 use biome_console::Console;
 use biome_deserialize::Merge;
+use biome_diagnostics::Severity;
 use biome_fs::FileSystem;
 use biome_service::configuration::LoadedConfiguration;
 use biome_service::{Workspace, WorkspaceError};
@@ -36,6 +37,7 @@ pub(crate) struct LintCommandPayload {
     pub(crate) json_linter: Option<JsonLinterConfiguration>,
     pub(crate) css_linter: Option<CssLinterConfiguration>,
     pub(crate) graphql_linter: Option<GraphqlLinterConfiguration>,
+    pub(crate) fix_level: Severity,
 }
 
 impl CommandRunner for LintCommandPayload {
@@ -143,6 +145,7 @@ impl CommandRunner for LintCommandPayload {
             suppress: self.suppress,
             suppression_reason: self.suppression_reason.clone(),
             skip_parse_errors: cli_options.skip_parse_errors,
+            fix_level: self.fix_level,
         })
         .set_report(cli_options))
     }

crates/biome_cli/src/commands/mod.rs

@@ -126,6 +126,15 @@ pub enum BiomeCommand {
         #[bpaf(long("fix"), switch, hide_usage)]
         fix: bool,
 
+        /// The level of diagnostics to fix. In order, from the lowest to the most important: info, warn, error. Passing `--fix-level=error` will cause Biome only to fix error-level diagnostics contain only errors.
+        #[bpaf(
+            long("fix-level"),
+            argument("info|warn|error"),
+            fallback(Severity::default()),
+            display_fallback
+        )]
+        fix_level: Severity,
+
         /// Allow enabling or disabling the formatter check.
         #[bpaf(
             long("formatter-enabled"),
@@ -273,6 +282,15 @@ pub enum BiomeCommand {
         /// Single file, single path or list of paths
         #[bpaf(positional("PATH"), many)]
         paths: Vec<OsString>,
+
+        /// The level of diagnostics to fix. In order, from the lowest to the most important: info, warn, error. Passing `--fix-level=error` will cause Biome only to fix error-level diagnostics contain only errors.
+        #[bpaf(
+            long("fix-level"),
+            argument("info|warn|error"),
+            fallback(Severity::default()),
+            display_fallback
+        )]
+        fix_level: Severity,
     },
     /// Run the formatter on a set of files.
     #[bpaf(command)]

crates/biome_cli/src/commands/scan_kind.rs

@@ -94,6 +94,7 @@ mod tests {
             suppress: false,
             suppression_reason: None,
             skip_parse_errors: false,
+            fix_level: biome_diagnostics::Severity::default(),
         });
 
         let root_dir = Utf8Path::new("/");
@@ -125,6 +126,7 @@ mod tests {
             vcs_targeted: VcsTargeted::default(),
             skip_parse_errors: false,
             enforce_assist: true,
+            fix_level: biome_diagnostics::Severity::default(),
         });
 
         let config = Configuration {

crates/biome_cli/src/execute/mod.rs

@@ -111,6 +111,9 @@ pub enum TraversalMode {
 
         /// It skips parse errors
         skip_parse_errors: bool,
+
+        /// The minimum level of diagnostics to fix
+        fix_level: biome_diagnostics::Severity,
     },
     /// This mode is enabled when running the command `biome lint`
     Lint {
@@ -139,6 +142,9 @@ pub enum TraversalMode {
 
         /// It skips parse errors
         skip_parse_errors: bool,
+
+        /// The minimum level of diagnostics to fix
+        fix_level: biome_diagnostics::Severity,
     },
     /// This mode is enabled when running the command `biome ci`
     CI {
@@ -510,6 +516,14 @@ impl Execution {
             _ => false,
         }
     }
+
+    pub(crate) fn get_fix_level(&self) -> biome_diagnostics::Severity {
+        match &self.traversal_mode {
+            TraversalMode::Check { fix_level, .. } => *fix_level,
+            TraversalMode::Lint { fix_level, .. } => *fix_level,
+            _ => biome_diagnostics::Severity::default(),
+        }
+    }
 }
 
 /// Based on the [mode](TraversalMode), the function might launch a traversal of the file system

crates/biome_cli/src/execute/process_file/lint_and_assist.rs

@@ -72,6 +72,7 @@ pub(crate) fn analyze_with_guard<'ctx>(
                 only.clone(),
                 skip.clone(),
                 Some(suppression_explanation.to_string()),
+                Some(ctx.fix_level),
             )
             .with_file_path_and_code(
                 workspace_file.path.to_string(),

crates/biome_cli/src/execute/std_in.rs

@@ -172,6 +172,7 @@ pub(crate) fn run<'a>(
                 suppression_reason: None,
                 enabled_rules: vec![],
                 rule_categories: rule_categories.build(),
+                fix_level: Some(mode.get_fix_level()),
             })?;
             let code = fix_file_result.code;
             let output = match biome_path.extension() {

crates/biome_cli/src/execute/traverse.rs

@@ -84,6 +84,7 @@ pub(crate) fn traverse(
                 skipped: &skipped,
                 messages: sender,
                 evaluated_paths: RwLock::default(),
+                fix_level: execution.get_fix_level(),
             },
         );
         // wait for the main thread to finish
@@ -447,6 +448,8 @@ pub(crate) struct TraversalOptions<'ctx, 'app> {
     pub(crate) messages: Sender<Message>,
     /// List of paths that should be processed
     pub(crate) evaluated_paths: RwLock<BTreeSet<BiomePath>>,
+    /// The minimum diagnostic level to fix
+    pub(crate) fix_level: biome_diagnostics::Severity,
 }
 
 impl TraversalOptions<'_, '_> {

crates/biome_cli/src/lib.rs

@@ -91,6 +91,7 @@ impl<'app> CliSession<'app> {
                 staged,
                 changed,
                 since,
+                fix_level,
             } => run_command(
                 self,
                 &cli_options,
@@ -108,6 +109,7 @@ impl<'app> CliSession<'app> {
                     staged,
                     changed,
                     since,
+                    fix_level,
                 },
             ),
             BiomeCommand::Lint {
@@ -131,6 +133,7 @@ impl<'app> CliSession<'app> {
                 javascript_linter,
                 json_linter,
                 graphql_linter,
+                fix_level,
             } => run_command(
                 self,
                 &cli_options,
@@ -154,6 +157,7 @@ impl<'app> CliSession<'app> {
                     javascript_linter,
                     json_linter,
                     graphql_linter,
+                    fix_level,
                 },
             ),
             BiomeCommand::Ci {