From 62d9137715753a18a9642294e437157c24366a5c Mon Sep 17 00:00:00 2001
From: Deepty Thampy <dthampy@adobe.com>
Date: Tue, 3 Jun 2025 13:10:01 -0500
Subject: [PATCH] feat: fixed the issue where unmapped action input params show
 up as literal placeholders

---
 src/lib/run-dev.js       | 5 ++++-
 test/lib/run-dev.test.js | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/lib/run-dev.js b/src/lib/run-dev.js
index 412b8f7..cc79b2c 100644
--- a/src/lib/run-dev.js
+++ b/src/lib/run-dev.js
@@ -545,7 +545,10 @@ function interpolate (valueString, props) {
   // replace ${VAR_NAME}, $VAR_NAME, or {VAR_NAME} with values from props, but not if they are enclosed in quotes
   // if key is not found on props, the value is returned as is (no replacement)
   const retStr = valueString.replace(/(?<!['"`])\$\{(\w+)\}(?!['"`])|(?<!['"`])\$(\w+)(?!['"`])|(?<!['"`])\{(\w+)\}(?!['"`])/g,
-    (_, varName1, varName2, varName3) => props[varName1 || varName2 || varName3] || _)
+    (_, varName1, varName2, varName3) => {
+      const varName = varName1 || varName2 || varName3
+      return Object.prototype.hasOwnProperty.call(props, varName) ? props[varName] : ''
+    })
   return retStr
 }
 
diff --git a/test/lib/run-dev.test.js b/test/lib/run-dev.test.js
index 375d71b..550b71a 100644
--- a/test/lib/run-dev.test.js
+++ b/test/lib/run-dev.test.js
@@ -348,7 +348,7 @@ describe('createActionParametersFromRequest', () => {
       justDollar: 'value is world',
       mustache: 'value is world',
       literal: 'value is literally "${mustache}" and "{mustache}"',
-      doesNotExist: 'value is ${doesNotExist}'
+      doesNotExist: 'value is '
     })
     delete process.env.mustache
   })