fixing null|undefined for _TN function

Author: vitaly-t

lib/helpers/table-name.js

@@ -156,10 +156,10 @@ npm.utils.addInspection(TableName, function () {
  */
 function _TN(a, ...args) {
     if (Array.isArray(a) && a.raw) {
-        a = a.map((b, i) => b + (i < args.length ? args[i] : '')).join('');
+        a = a.map((b, i) => b + (i < args.length ? args[i] ?? '' : '')).join('');
     } // else 'a' is a string
     const [schema, table] = a.split('.');
-    if(table === undefined) {
+    if (table === undefined) {
         return {table: schema};
     }
     return schema ? {schema, table} : {table};

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pg-promise",
-  "version": "11.7.6",
+  "version": "11.7.7",
   "description": "PostgreSQL interface for Node.js",
   "main": "lib/index.js",
   "typings": "typescript/pg-promise.d.ts",

test/help.spec.js

@@ -982,5 +982,17 @@ describe('_TN', () => {
             expect(helpers._TN`${schema}.${table}`).toEqual({schema: 'ss', table: 'tt'});
             expect(helpers._TN`${schema}.${table}.`).toEqual({schema: 'ss', table: 'tt'});
         });
+        it('must support null parameters', () => {
+            const schema = null, table = null;
+            expect(helpers._TN`${schema}.${table}`).toEqual({table: ''});
+            expect(helpers._TN`ss.${table}`).toEqual({schema: 'ss', table: ''});
+            expect(helpers._TN`${schema}.tt`).toEqual({table: 'tt'});
+        });
+        it('must support undefined parameters', () => {
+            const schema = undefined, table = undefined;
+            expect(helpers._TN`${schema}.${table}`).toEqual({table: ''});
+            expect(helpers._TN`ss.${table}`).toEqual({schema: 'ss', table: ''});
+            expect(helpers._TN`${schema}.tt`).toEqual({table: 'tt'});
+        });
     });
 });