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-rw-r--r--src/tools/tidy/src/rustdoc_js.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/tools/tidy/src/rustdoc_js.rs b/src/tools/tidy/src/rustdoc_js.rs
index 2517e2de12c..720f0712ee0 100644
--- a/src/tools/tidy/src/rustdoc_js.rs
+++ b/src/tools/tidy/src/rustdoc_js.rs
@@ -62,6 +62,9 @@ pub fn check(librustdoc_path: &Path, tools_path: &Path, src_path: &Path, bad: &m
             return;
         }
     };
+    // Having the correct `eslint` version installed via `npm` isn't strictly necessary, since we're invoking it via `npx`,
+    // but this check allows the vast majority that is not working on the rustdoc frontend to avoid the penalty of running
+    // `eslint` in tidy. See also: https://github.com/rust-lang/rust/pull/142851
     match get_eslint_version() {
         Some(version) => {
             if version != eslint_version {