add lint result

cli/tools/lint/linter.rs

@@ -25,6 +25,18 @@ use super::rules::FileOrPackageLintRule;
 use super::rules::PackageLintRule;
 use super::ConfiguredRules;
 
+pub enum LintResult {
+  /// File was linted and optionally produced diagnostics
+  Linted {
+    parsed_source: ParsedSource,
+    diagnostics: Vec<LintDiagnostic>,
+  },
+  /// File was not parsed and linted because, eg. it might have
+  /// been a minified file.
+  #[allow(unused)]
+  Skipped,
+}
+
 pub struct CliLinterOptions {
   pub configured_rules: ConfiguredRules,
   pub fix: bool,
@@ -97,15 +109,12 @@ impl CliLinter {
     file_path: &Path,
     source_code: String,
     ext: Option<&str>,
-  ) -> Result<(ParsedSource, Vec<LintDiagnostic>), AnyError> {
+  ) -> Result<LintResult, AnyError> {
     let specifier = specifier_from_file_path(file_path)?;
 
     let metrics = minified_file::analyze_content(&source_code);
     if metrics.is_likely_minified() {
-      bail!(
+      Ok(LintResult::Skipped);
-        "{} appears to be a minified file, skipping linting",
-        specifier.as_str()
-      );
     }
 
     let media_type = if let Some(ext) = ext {
@@ -119,7 +128,7 @@ impl CliLinter {
     if self.fix {
       self.lint_file_and_fix(&specifier, media_type, source_code, file_path)
     } else {
-      self
+      let (parsed_source, diagnostics) = self
         .linter
         .lint_file(LintFileOptions {
           specifier,
@@ -127,7 +136,11 @@ impl CliLinter {
           source_code,
           config: self.deno_lint_config.clone(),
         })
-        .map_err(AnyError::from)
+        .map_err(AnyError::from)?;
+      Ok(LintResult::Linted {
+        parsed_source,
+        diagnostics,
+      })
     }
   }
 
@@ -137,7 +150,7 @@ impl CliLinter {
     media_type: MediaType,
     source_code: String,
     file_path: &Path,
-  ) -> Result<(ParsedSource, Vec<LintDiagnostic>), deno_core::anyhow::Error> {
+  ) -> Result<LintResult, deno_core::anyhow::Error> {
     // initial lint
     let (source, diagnostics) = self.linter.lint_file(LintFileOptions {
       specifier: specifier.clone(),
@@ -194,7 +207,10 @@ impl CliLinter {
       .context("Failed writing fix to file.")?;
     }
 
-    Ok((source, diagnostics))
+    Ok(LintResult::Linted {
+      parsed_source: source,
+      diagnostics,
+    })
   }
 }
 

cli/tools/lint/mod.rs

@@ -4,7 +4,6 @@
 //! [`deno_lint`](https://github.com/denoland/deno_lint).
 
 use deno_ast::ModuleSpecifier;
-use deno_ast::ParsedSource;
 use deno_config::deno_json::LintRulesConfig;
 use deno_config::glob::FileCollector;
 use deno_config::glob::FilePatterns;
@@ -19,8 +18,8 @@ use deno_core::serde_json;
 use deno_core::unsync::future::LocalFutureExt;
 use deno_core::unsync::future::SharedLocal;
 use deno_graph::ModuleGraph;
-use deno_lint::diagnostic::LintDiagnostic;
 use deno_lint::linter::LintConfig;
+use linter::LintResult;
 use log::debug;
 use reporters::create_reporter;
 use reporters::LintReporter;
@@ -371,14 +370,18 @@ impl WorkspaceLinter {
               file_text,
               cli_options.ext_flag().as_deref(),
             );
-            if let Ok((file_source, file_diagnostics)) = &r {
+            if let Ok(LintResult::Linted {
+              parsed_source,
+              diagnostics,
+            }) = &r
+            {
               if let Some(incremental_cache) = &maybe_incremental_cache {
-                if file_diagnostics.is_empty() {
+                if diagnostics.is_empty() {
                   // update the incremental cache if there were no diagnostics
                   incremental_cache.update_file(
                     &file_path,
                     // ensure the returned text is used here as it may have been modified via --fix
-                    file_source.text(),
+                    parsed_source.text(),
                   )
                 }
               }
@@ -496,7 +499,7 @@ fn lint_stdin(
   file_path: &Path,
   configured_rules: ConfiguredRules,
   deno_lint_config: LintConfig,
-) -> Result<(ParsedSource, Vec<LintDiagnostic>), AnyError> {
+) -> Result<LintResult, AnyError> {
   let mut source_code = String::new();
   if stdin().read_to_string(&mut source_code).is_err() {
     return Err(generic_error("Failed to read from stdin"));
@@ -515,19 +518,24 @@ fn lint_stdin(
 
 fn handle_lint_result(
   file_path: &str,
-  result: Result<(ParsedSource, Vec<LintDiagnostic>), AnyError>,
+  result: Result<LintResult, AnyError>,
   reporter_lock: Arc<Mutex<Box<dyn LintReporter + Send>>>,
 ) -> bool {
   let mut reporter = reporter_lock.lock();
 
   match result {
-    Ok((source, mut file_diagnostics)) => {
+    Ok(lint_result) => {
-      if !source.diagnostics().is_empty() {
+      if let LintResult::Linted {
-        for parse_diagnostic in source.diagnostics() {
+        parsed_source,
+        mut diagnostics,
+      } = lint_result
+      {
+        if !parsed_source.diagnostics().is_empty() {
+          for parse_diagnostic in parsed_source.diagnostics() {
             log::warn!("{}: {}", colors::yellow("warn"), parse_diagnostic);
           }
         }
-      file_diagnostics.sort_by(|a, b| match a.specifier.cmp(&b.specifier) {
+        diagnostics.sort_by(|a, b| match a.specifier.cmp(&b.specifier) {
           std::cmp::Ordering::Equal => {
             let a_start = a.range.as_ref().map(|r| r.range.start);
             let b_start = b.range.as_ref().map(|r| r.range.start);
@@ -538,10 +546,13 @@ fn handle_lint_result(
           }
           file_order => file_order,
         });
-      for d in &file_diagnostics {
+        for d in &diagnostics {
           reporter.visit_diagnostic(d);
         }
-      file_diagnostics.is_empty()
+        diagnostics.is_empty()
+      } else {
+        true
+      }
     }
     Err(err) => {
       reporter.visit_error(file_path, &err);