no-hex-escape: Ignore String.raw (#2343)

Author: fisker

rules/no-hex-escape.js

@@ -1,6 +1,7 @@
 'use strict';
 const {replaceTemplateElement} = require('./fix/index.js');
 const {isStringLiteral, isRegexLiteral} = require('./ast/index.js');
+const {isNodeMatches} = require('./utils/index.js');
 
 const MESSAGE_ID = 'no-hex-escape';
 const messages = {
@@ -29,7 +30,18 @@ const create = context => ({
 			return checkEscape(context, node, node.raw);
 		}
 	},
-	TemplateElement: node => checkEscape(context, node, node.value.raw),
+	TemplateElement(node) {
+		const templateLiteral = node.parent;
+		if (
+			templateLiteral.parent.type === 'TaggedTemplateExpression'
+			&& templateLiteral.parent.quasi === templateLiteral
+			&& isNodeMatches(templateLiteral.parent.tag, ['String.raw'])
+		) {
+			return;
+		}
+
+		return checkEscape(context, node, node.value.raw);
+	},
 });
 
 /** @type {import('eslint').Rule.RuleModule} */

test/no-hex-escape.mjs

@@ -38,6 +38,7 @@ const tests = {
 		'const foo = `foo\\\\x12foo\\\\x34`',
 		'const foo = `\\\\\\\\xd8\\\\\\\\x3d\\\\\\\\xdc\\\\\\\\xa9`',
 		'const foo = `foo\\\\\\\\x12foo\\\\\\\\x34`',
+		'const foo = String.raw`\\\\xb1`',
 	],
 	invalid: [
 		{
@@ -193,6 +194,17 @@ const tests = {
 			// eslint-disable-next-line no-template-curly-in-string
 			output: 'const foo = `\\u00b1${foo}\\u00b1${foo}`',
 		},
+		{
+			code: 'const foo = `\\xb1```',
+			errors: [error],
+			output: 'const foo = `\\u00b1```',
+		},
+		// TODO: Not safe #2341
+		{
+			code: 'const foo = tagged`\\xb1`',
+			errors: [error],
+			output: 'const foo = tagged`\\u00b1`',
+		},
 	],
 };