Fix union of quoted property names returning no results

dist/index-browser-esm.js

@@ -1866,7 +1866,11 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
     // [name1,name2,...]
     const parts = loc.split(',');
     for (const part of parts) {
-      addRet(this._trace(unshift(part, x), val, path, parent, parentPropName, callback, true));
+      // Strip the quotes that survive tokenization of a quoted union
+      // member (e.g. $['x','y'] leaves parts ["x'", "'y"]); bare and
+      // numeric members have no quotes and are unaffected.
+      const prop = part.trim().replace(/^['"]|['"]$/gu, '');
+      addRet(this._trace(unshift(prop, x), val, path, parent, parentPropName, callback, true));
     }
     // simple case--directly follow property
   } else if (!literalPriority && val && Object.hasOwn(val, loc)) {

dist/index-browser-umd.cjs

@@ -1872,7 +1872,11 @@
 	    // [name1,name2,...]
 	    const parts = loc.split(',');
 	    for (const part of parts) {
-	      addRet(this._trace(unshift(part, x), val, path, parent, parentPropName, callback, true));
+	      // Strip the quotes that survive tokenization of a quoted union
+	      // member (e.g. $['x','y'] leaves parts ["x'", "'y"]); bare and
+	      // numeric members have no quotes and are unaffected.
+	      const prop = part.trim().replace(/^['"]|['"]$/gu, '');
+	      addRet(this._trace(unshift(prop, x), val, path, parent, parentPropName, callback, true));
 	    }
 	    // simple case--directly follow property
 	  } else if (!literalPriority && val && Object.hasOwn(val, loc)) {

dist/index-node-cjs.cjs

@@ -1870,7 +1870,11 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
     // [name1,name2,...]
     const parts = loc.split(',');
     for (const part of parts) {
-      addRet(this._trace(unshift(part, x), val, path, parent, parentPropName, callback, true));
+      // Strip the quotes that survive tokenization of a quoted union
+      // member (e.g. $['x','y'] leaves parts ["x'", "'y"]); bare and
+      // numeric members have no quotes and are unaffected.
+      const prop = part.trim().replace(/^['"]|['"]$/gu, '');
+      addRet(this._trace(unshift(prop, x), val, path, parent, parentPropName, callback, true));
     }
     // simple case--directly follow property
   } else if (!literalPriority && val && Object.hasOwn(val, loc)) {

dist/index-node-esm.js

@@ -1868,7 +1868,11 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
     // [name1,name2,...]
     const parts = loc.split(',');
     for (const part of parts) {
-      addRet(this._trace(unshift(part, x), val, path, parent, parentPropName, callback, true));
+      // Strip the quotes that survive tokenization of a quoted union
+      // member (e.g. $['x','y'] leaves parts ["x'", "'y"]); bare and
+      // numeric members have no quotes and are unaffected.
+      const prop = part.trim().replace(/^['"]|['"]$/gu, '');
+      addRet(this._trace(unshift(prop, x), val, path, parent, parentPropName, callback, true));
     }
     // simple case--directly follow property
   } else if (!literalPriority && val && Object.hasOwn(val, loc)) {

src/jsonpath.js

@@ -542,8 +542,12 @@ JSONPath.prototype._trace = function (
     } else if (loc.includes(',')) { // [name1,name2,...]
         const parts = loc.split(',');
         for (const part of parts) {
+            // Strip the quotes that survive tokenization of a quoted union
+            // member (e.g. $['x','y'] leaves parts ["x'", "'y"]); bare and
+            // numeric members have no quotes and are unaffected.
+            const prop = part.trim().replace(/^['"]|['"]$/gu, '');
             addRet(this._trace(
-                unshift(part, x), val, path, parent, parentPropName, callback,
+                unshift(prop, x), val, path, parent, parentPropName, callback,
                 true
             ));
         }

test/test.properties.js

@@ -25,6 +25,13 @@ checkBuiltInVMAndNodeVM(function (vmType, setBuiltInState) {
             assert.deepEqual(result, expected);
         });
 
+        it('Union of quoted property names', () => {
+            const data = {x: 1, y: 2, z: 3};
+            assert.deepEqual(jsonpath({json: data, path: "$['x','y']"}), [1, 2]);
+            assert.deepEqual(jsonpath({json: data, path: '$["x","y"]'}), [1, 2]);
+            assert.deepEqual(jsonpath({json: data, path: "$['x', 'y']"}), [1, 2]);
+        });
+
         it('At signs within properties', () => {
             let result = jsonpath({json, path: "$.datafield[?(@.tag=='035')]", wrap: false});
             assert.deepEqual(result, [json.datafield[0]]);