From 4110eadc6778bd7b66a6fd74f39bf4e6ae13cea7 Mon Sep 17 00:00:00 2001
From: Cameron McHenry <camchenry@users.noreply.github.com>
Date: Tue, 24 Sep 2024 16:57:37 -0400
Subject: [PATCH] fix(linter): ignore invalid or partial disable directives

---
 crates/oxc_linter/src/disable_directives.rs | 103 +++++++++++++++++---
 1 file changed, 89 insertions(+), 14 deletions(-)

diff --git a/crates/oxc_linter/src/disable_directives.rs b/crates/oxc_linter/src/disable_directives.rs
index 6faa9534782c7a..669d5cd967e8cd 100644
--- a/crates/oxc_linter/src/disable_directives.rs
+++ b/crates/oxc_linter/src/disable_directives.rs
@@ -109,9 +109,8 @@ impl<'a> DisableDirectivesBuilder<'a> {
                     self.disable_all_comments.push(comment.span);
                     continue;
                 }
-
                 // `eslint-disable-next-line`
-                if let Some(text) = text.strip_prefix("-next-line") {
+                else if let Some(text) = text.strip_prefix("-next-line") {
                     // Get the span up to the next new line
                     let stop = self.source_text[comment.span.end as usize..]
                         .lines()
@@ -136,9 +135,8 @@ impl<'a> DisableDirectivesBuilder<'a> {
                     }
                     continue;
                 }
-
                 // `eslint-disable-line`
-                if let Some(text) = text.strip_prefix("-line") {
+                else if let Some(text) = text.strip_prefix("-line") {
                     // Get the span between the preceding newline to this comment
                     let start = self.source_text[..=comment.span.start as usize]
                         .lines()
@@ -162,16 +160,19 @@ impl<'a> DisableDirectivesBuilder<'a> {
                     }
                     continue;
                 }
-
-                // `eslint-disable rule-name1, rule-name2`
-                let mut rules = vec![];
-                Self::get_rule_names(text, |rule_name| {
-                    self.disable_start_map.entry(rule_name).or_insert(comment.span.end);
-                    rules.push(rule_name);
-                });
-                self.disable_rule_comments.push(DisableRuleComment { span: comment.span, rules });
-
-                continue;
+                // Remaining text should start with a space, else it's probably a typo of the correct syntax.
+                // Like `eslint-disable-lext-nine` where `text` is `-lext-nine`, or directive is `eslint-disablefoo`
+                else if text.starts_with(' ') {
+                    // `eslint-disable rule-name1, rule-name2`
+                    let mut rules = vec![];
+                    Self::get_rule_names(text, |rule_name| {
+                        self.disable_start_map.entry(rule_name).or_insert(comment.span.end);
+                        rules.push(rule_name);
+                    });
+                    self.disable_rule_comments
+                        .push(DisableRuleComment { span: comment.span, rules });
+                    continue;
+                }
             }
 
             if let Some(text) =
@@ -341,6 +342,21 @@ fn test() {
             debugger;
         "
             ),
+            // Should only match `eslint-enable` comments, not `eslint-enablefoo`
+            format!("
+            /* {prefix}-disable */
+                debugger;
+            /* {prefix}-enablefoo */
+                debugger;
+            "
+            ),
+            format!("
+            /* {prefix}-disable no-debugger, no-console */
+                debugger;
+            /* {prefix}-enablefoo no-debugger, no-console */
+                debugger;
+            "
+            ),
         ];
 
         let fail = vec![
@@ -395,6 +411,65 @@ fn test() {
             debugger;
         "
             ),
+            // Should not match invalid directives
+            // https://github.com/oxc-project/oxc/issues/6041
+            format!(
+                "// {prefix}-disable-lext-nine no-debugger
+                debugger;
+                "
+            ),
+            format!(
+                "// {prefix}-disabled no-debugger
+                debugger;
+                "
+            ),
+            format!(
+                "// {prefix}-disabled
+                debugger;
+                "
+            ),
+            format!(
+                "
+            debugger; // {prefix}-disable-lext-nine no-debugger
+
+            // {prefix}-disable-lext-nine no-debugger
+            debugger;
+
+            debugger; /* {prefix}-disable-lin no-debugger */
+
+            /* {prefix}-disable-next-lin no-debugger */
+            debugger;
+        "
+            ),
+            format!(
+                "debugger; // {prefix}-disable-linefoo
+            debugger; // {prefix}-disable-linefoo
+
+            // {prefix}-disable-next-linefoo
+            debugger;
+
+            /* {prefix}-disable-next-linefoo */
+            debugger;
+
+            debugger; /* {prefix}-disable-linefoo */
+        "
+            ),
+            format!(
+                "
+            /* {prefix}-disable */
+                debugger;
+            /* {prefix}-enable */
+                debugger;
+            "
+            ),
+            format!(
+                "
+            /* {prefix}-disable no-debugger, no-console */
+                debugger;
+            /* {prefix}-enable no-debugger, no-console */
+                debugger;
+            "
+            ),
         ];
 
         Tester::new("no-debugger", pass, fail).test();