Do not escape forward slashes in Printer

Author: ruudk

src/Language/Printer.php

@@ -414,7 +414,7 @@ protected function p(?Node $node): string
                     return BlockString::print($node->value);
                 }
 
-                return json_encode($node->value, JSON_THROW_ON_ERROR);
+                return json_encode($node->value, JSON_THROW_ON_ERROR | JSON_UNESCAPED_SLASHES);
 
             case $node instanceof UnionTypeDefinitionNode:
                 $typesStr = $this->printList($node->types, ' | ');

tests/Language/PrinterTest.php

@@ -291,4 +291,28 @@ public function testPrintPrimitives(): void
         self::assertASTMatches('3', AST::astFromValue(3, Type::int()));
         self::assertASTMatches('3.14', AST::astFromValue(3.14, Type::float()));
     }
+
+    public function testDoNotEscapeForwardSlash(): void
+    {
+        $ast = Parser::parse(<<<'GRAPHQL'
+query {
+    search(query: "repo: webonyx/graphql-php") {
+        id
+    }
+}
+GRAPHQL
+        );
+
+        self::assertSame(
+            <<<'GRAPHQL'
+{
+  search(query: "repo: webonyx/graphql-php") {
+    id
+  }
+}
+
+GRAPHQL,
+            Printer::doPrint($ast),
+        );
+    }
 }