From 53eea79c9de29952c402c6ac7538466ab7bcae9a Mon Sep 17 00:00:00 2001
From: Michael Spencer <sonrisesoftware@gmail.com>
Date: Sun, 3 May 2020 07:35:43 -0500
Subject: [PATCH] Allow specifying the original name of nodes

See #118, https://github.com/estools/esmangle/issues/85
---
 escodegen.js       | 4 ++--
 test/source-map.js | 8 +++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/escodegen.js b/escodegen.js
index 6fe6646d..c862052d 100644
--- a/escodegen.js
+++ b/escodegen.js
@@ -526,9 +526,9 @@
             }
         }
         if (node.loc == null) {
-            return new SourceNode(null, null, sourceMap, generated, node.name || null);
+            return new SourceNode(null, null, sourceMap, generated, node.originalName || node.name || null);
         }
-        return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap === true ? node.loc.source || null : sourceMap), generated, node.name || null);
+        return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap === true ? node.loc.source || null : sourceMap), generated, node.originalName || node.name || null);
     }
 
     function noEmptySpace() {
diff --git a/test/source-map.js b/test/source-map.js
index 8f6f2150..261ee184 100644
--- a/test/source-map.js
+++ b/test/source-map.js
@@ -313,7 +313,8 @@ describe('source map test', function () {
                             "type": "VariableDeclarator",
                             "id": {
                                 "type": "Identifier",
-                                "name": "fooga",
+                                "name": "a",
+                                "originalName": "fooga",
                                 "loc": {
                                     "start": {
                                         "line": 1,
@@ -413,7 +414,8 @@ describe('source map test', function () {
                         "arguments": [
                             {
                                 "type": "Identifier",
-                                "name": "fooga",
+                                "name": "a",
+                                "originalName": "fooga",
                                 "loc": {
                                     "start": {
                                         "line": 3,
@@ -466,7 +468,7 @@ describe('source map test', function () {
             sourceMapWithCode: true
         });
 
-        expect(result.map._names._array.length).to.be.equal(3);
+        expect(result.map._names._array).to.be.eql(["fooga", "console", "log"]);
     });
 
     it('sourceContent support', function() {