Fix: Allow useless escapes in tagged template literals (fixes #7383) (#…

…7384)
eslint · Oct 17, 2016 · 7525042 · 7525042
1 parent 9106964
commit 7525042
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/lib/rules/no-useless-escape.js b/lib/rules/no-useless-escape.js
@@ -132,6 +132,12 @@ module.exports = {
             let nodeEscapes,
                 match;
 
+            if (isTemplateElement && node.parent && node.parent.parent && node.parent.parent.type === "TaggedTemplateExpression") {
+
+                // Don't report tagged template literals, because the backslash character is accessible to the tag function.
+                return;
+            }
+
             if (typeof node.value === "string" || isTemplateElement) {
 
                 /*

diff --git a/tests/lib/rules/no-useless-escape.js b/tests/lib/rules/no-useless-escape.js
@@ -75,7 +75,9 @@ ruleTester.run("no-useless-escape", rule, {
         {code: "var foo = `\\\``", parserOptions: {ecmaVersion: 6}},
         {code: "var foo = `\\\`${foo}\\\``", parserOptions: {ecmaVersion: 6}},
         {code: "var foo = `\\${{${foo}`;", parserOptions: {ecmaVersion: 6}},
-        {code: "var foo = `$\\{{${foo}`;", parserOptions: {ecmaVersion: 6}}
+        {code: "var foo = `$\\{{${foo}`;", parserOptions: {ecmaVersion: 6}},
+        {code: "var foo = String.raw`\\.`", parserOptions: {ecmaVersion: 6}},
+        {code: "var foo = myFunc`\\.`", parserOptions: {ecmaVersion: 6}}
     ],
 
     invalid: [