From e9938e34d50fe96122e2feaaead61eb0d8126368 Mon Sep 17 00:00:00 2001
From: "Michael B. Gale" <mbg@github.com>
Date: Fri, 27 Jun 2025 13:59:57 +0100
Subject: [PATCH 1/4] Check that proxy configurations are an array

---
 lib/start-proxy.js          |  4 ++++
 lib/start-proxy.js.map      |  2 +-
 lib/start-proxy.test.js     |  6 ++++++
 lib/start-proxy.test.js.map |  2 +-
 src/start-proxy.test.ts     | 20 ++++++++++++++++++++
 src/start-proxy.ts          |  7 +++++++
 6 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/lib/start-proxy.js b/lib/start-proxy.js
index 66d50ed551..902413ef58 100644
--- a/lib/start-proxy.js
+++ b/lib/start-proxy.js
@@ -81,6 +81,10 @@ function getCredentials(logger, registrySecrets, registriesCredentials, language
         logger.error("Failed to parse the credentials data.");
         throw new util_1.ConfigurationError("Invalid credentials format.");
     }
+    // Check that the parsed data is indeed an array.
+    if (!Array.isArray(parsed)) {
+        throw new util_1.ConfigurationError("Expected credentials data to be an array of configurations, but it is not.");
+    }
     const out = [];
     for (const e of parsed) {
         // Mask credentials to reduce chance of accidental leakage in logs.
diff --git a/lib/start-proxy.js.map b/lib/start-proxy.js.map
index d6cc42f1b0..ed5747d0ae 100644
--- a/lib/start-proxy.js.map
+++ b/lib/start-proxy.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.js","sourceRoot":"","sources":["../src/start-proxy.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAgCA,wCAmFC;AAnHD,oDAAsC;AAEtC,2CAAsD;AAEtD,iCAA4C;AAW5C,MAAM,yBAAyB,GAA6B;IAC1D,IAAI,EAAE,kBAAkB;IACxB,MAAM,EAAE,YAAY;IACpB,UAAU,EAAE,cAAc;IAC1B,MAAM,EAAE,cAAc;IACtB,IAAI,EAAE,iBAAiB;IACvB,IAAI,EAAE,gBAAgB;IACtB,EAAE,EAAE,gBAAgB;IACpB,oFAAoF;IACpF,OAAO,EAAE,EAAE;IACX,GAAG,EAAE,EAAE;IACP,KAAK,EAAE,EAAE;CACD,CAAC;AAEX,kEAAkE;AAClE,+DAA+D;AAC/D,gDAAgD;AAChD,SAAgB,cAAc,CAC5B,MAAc,EACd,eAAmC,EACnC,qBAAyC,EACzC,cAAkC;IAElC,MAAM,QAAQ,GAAG,cAAc,CAAC,CAAC,CAAC,IAAA,yBAAa,EAAC,cAAc,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC;IAC5E,MAAM,uBAAuB,GAAG,QAAQ;QACtC,CAAC,CAAC,yBAAyB,CAAC,QAAQ,CAAC;QACrC,CAAC,CAAC,SAAS,CAAC;IAEd,IAAI,cAAsB,CAAC;IAC3B,IAAI,qBAAqB,KAAK,SAAS,EAAE,CAAC;QACxC,MAAM,CAAC,IAAI,CAAC,qCAAqC,CAAC,CAAC;QACnD,cAAc,GAAG,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,CAAC,QAAQ,EAAE,CAAC;IAC3E,CAAC;SAAM,IAAI,eAAe,KAAK,SAAS,EAAE,CAAC;QACzC,MAAM,CAAC,IAAI,CAAC,+BAA+B,CAAC,CAAC;QAC7C,cAAc,GAAG,eAAe,CAAC;IACnC,CAAC;SAAM,CAAC;QACN,MAAM,CAAC,IAAI,CAAC,yBAAyB,CAAC,CAAC;QACvC,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,qCAAqC;IACrC,IAAI,MAAoB,CAAC;IACzB,IAAI,CAAC;QACH,MAAM,GAAG,IAAI,CAAC,KAAK,CAAC,cAAc,CAAiB,CAAC;IACtD,CAAC;IAAC,MAAM,CAAC;QACP,oEAAoE;QACpE,MAAM,CAAC,KAAK,CAAC,uCAAuC,CAAC,CAAC;QACtD,MAAM,IAAI,yBAAkB,CAAC,6BAA6B,CAAC,CAAC;IAC9D,CAAC;IAED,MAAM,GAAG,GAAiB,EAAE,CAAC;IAC7B,KAAK,MAAM,CAAC,IAAI,MAAM,EAAE,CAAC;QACvB,mEAAmE;QACnE,IAAI,CAAC,CAAC,QAAQ,KAAK,SAAS,EAAE,CAAC;YAC7B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC;QACD,IAAI,CAAC,CAAC,KAAK,KAAK,SAAS,EAAE,CAAC;YAC1B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QAC1B,CAAC;QAED,IAAI,CAAC,CAAC,GAAG,KAAK,SAAS,IAAI,CAAC,CAAC,IAAI,KAAK,SAAS,EAAE,CAAC;YAChD,yFAAyF;YACzF,MAAM,IAAI,yBAAkB,CAC1B,gDAAgD,CACjD,CAAC;QACJ,CAAC;QAED,kFAAkF;QAClF,iEAAiE;QACjE,IAAI,uBAAuB,IAAI,CAAC,CAAC,IAAI,KAAK,uBAAuB,EAAE,CAAC;YAClE,SAAS;QACX,CAAC;QAED,MAAM,WAAW,GAAG,CAAC,GAAuB,EAAW,EAAE;YACvD,OAAO,GAAG,CAAC,CAAC,CAAC,gBAAgB,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QACjD,CAAC,CAAC;QAEF,IACE,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC;YACnB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,KAAK,CAAC,EACrB,CAAC;YACD,MAAM,IAAI,yBAAkB,CAC1B,qEAAqE,CACtE,CAAC;QACJ,CAAC;QAED,GAAG,CAAC,IAAI,CAAC;YACP,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,GAAG,EAAE,CAAC,CAAC,GAAG;YACV,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,KAAK,EAAE,CAAC,CAAC,KAAK;SACf,CAAC,CAAC;IACL,CAAC;IACD,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.js","sourceRoot":"","sources":["../src/start-proxy.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAgCA,wCA0FC;AA1HD,oDAAsC;AAEtC,2CAAsD;AAEtD,iCAA4C;AAW5C,MAAM,yBAAyB,GAA6B;IAC1D,IAAI,EAAE,kBAAkB;IACxB,MAAM,EAAE,YAAY;IACpB,UAAU,EAAE,cAAc;IAC1B,MAAM,EAAE,cAAc;IACtB,IAAI,EAAE,iBAAiB;IACvB,IAAI,EAAE,gBAAgB;IACtB,EAAE,EAAE,gBAAgB;IACpB,oFAAoF;IACpF,OAAO,EAAE,EAAE;IACX,GAAG,EAAE,EAAE;IACP,KAAK,EAAE,EAAE;CACD,CAAC;AAEX,kEAAkE;AAClE,+DAA+D;AAC/D,gDAAgD;AAChD,SAAgB,cAAc,CAC5B,MAAc,EACd,eAAmC,EACnC,qBAAyC,EACzC,cAAkC;IAElC,MAAM,QAAQ,GAAG,cAAc,CAAC,CAAC,CAAC,IAAA,yBAAa,EAAC,cAAc,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC;IAC5E,MAAM,uBAAuB,GAAG,QAAQ;QACtC,CAAC,CAAC,yBAAyB,CAAC,QAAQ,CAAC;QACrC,CAAC,CAAC,SAAS,CAAC;IAEd,IAAI,cAAsB,CAAC;IAC3B,IAAI,qBAAqB,KAAK,SAAS,EAAE,CAAC;QACxC,MAAM,CAAC,IAAI,CAAC,qCAAqC,CAAC,CAAC;QACnD,cAAc,GAAG,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,CAAC,QAAQ,EAAE,CAAC;IAC3E,CAAC;SAAM,IAAI,eAAe,KAAK,SAAS,EAAE,CAAC;QACzC,MAAM,CAAC,IAAI,CAAC,+BAA+B,CAAC,CAAC;QAC7C,cAAc,GAAG,eAAe,CAAC;IACnC,CAAC;SAAM,CAAC;QACN,MAAM,CAAC,IAAI,CAAC,yBAAyB,CAAC,CAAC;QACvC,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,qCAAqC;IACrC,IAAI,MAAoB,CAAC;IACzB,IAAI,CAAC;QACH,MAAM,GAAG,IAAI,CAAC,KAAK,CAAC,cAAc,CAAiB,CAAC;IACtD,CAAC;IAAC,MAAM,CAAC;QACP,oEAAoE;QACpE,MAAM,CAAC,KAAK,CAAC,uCAAuC,CAAC,CAAC;QACtD,MAAM,IAAI,yBAAkB,CAAC,6BAA6B,CAAC,CAAC;IAC9D,CAAC;IAED,iDAAiD;IACjD,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC,EAAE,CAAC;QAC3B,MAAM,IAAI,yBAAkB,CAC1B,4EAA4E,CAC7E,CAAC;IACJ,CAAC;IAED,MAAM,GAAG,GAAiB,EAAE,CAAC;IAC7B,KAAK,MAAM,CAAC,IAAI,MAAM,EAAE,CAAC;QACvB,mEAAmE;QACnE,IAAI,CAAC,CAAC,QAAQ,KAAK,SAAS,EAAE,CAAC;YAC7B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC;QACD,IAAI,CAAC,CAAC,KAAK,KAAK,SAAS,EAAE,CAAC;YAC1B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QAC1B,CAAC;QAED,IAAI,CAAC,CAAC,GAAG,KAAK,SAAS,IAAI,CAAC,CAAC,IAAI,KAAK,SAAS,EAAE,CAAC;YAChD,yFAAyF;YACzF,MAAM,IAAI,yBAAkB,CAC1B,gDAAgD,CACjD,CAAC;QACJ,CAAC;QAED,kFAAkF;QAClF,iEAAiE;QACjE,IAAI,uBAAuB,IAAI,CAAC,CAAC,IAAI,KAAK,uBAAuB,EAAE,CAAC;YAClE,SAAS;QACX,CAAC;QAED,MAAM,WAAW,GAAG,CAAC,GAAuB,EAAW,EAAE;YACvD,OAAO,GAAG,CAAC,CAAC,CAAC,gBAAgB,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QACjD,CAAC,CAAC;QAEF,IACE,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC;YACnB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,KAAK,CAAC,EACrB,CAAC;YACD,MAAM,IAAI,yBAAkB,CAC1B,qEAAqE,CACtE,CAAC;QACJ,CAAC;QAED,GAAG,CAAC,IAAI,CAAC;YACP,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,GAAG,EAAE,CAAC,CAAC,GAAG;YACV,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,KAAK,EAAE,CAAC,CAAC,KAAK;SACf,CAAC,CAAC;IACL,CAAC;IACD,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
diff --git a/lib/start-proxy.test.js b/lib/start-proxy.test.js
index b4d53aad87..c41cbd65e8 100644
--- a/lib/start-proxy.test.js
+++ b/lib/start-proxy.test.js
@@ -52,6 +52,12 @@ const testing_utils_1 = require("./testing-utils");
     t.is(credentials.length, 1);
     t.is(credentials[0].host, "npm.pkg.github.com");
 });
+(0, ava_1.default)("getCredentials throws an error when configurations are not an array", async (t) => {
+    const registryCredentials = Buffer.from(JSON.stringify({ type: "npm_registry", token: "abc" })).toString("base64");
+    t.throws(() => startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, registryCredentials, undefined), {
+        message: "Expected credentials data to be an array of configurations, but it is not.",
+    });
+});
 (0, ava_1.default)("getCredentials throws error when credential missing host and url", async (t) => {
     const registryCredentials = Buffer.from(JSON.stringify([{ type: "npm_registry", token: "abc" }])).toString("base64");
     t.throws(() => startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, registryCredentials, undefined), {
diff --git a/lib/start-proxy.test.js.map b/lib/start-proxy.test.js.map
index c9ca771a5c..de65f1fc4a 100644
--- a/lib/start-proxy.test.js.map
+++ b/lib/start-proxy.test.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,CACzD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EAAE,gDAAgD;KAC1D,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,CACzD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EAAE,gDAAgD;KAC1D,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
diff --git a/src/start-proxy.test.ts b/src/start-proxy.test.ts
index cb84833cc6..466d528c6d 100644
--- a/src/start-proxy.test.ts
+++ b/src/start-proxy.test.ts
@@ -26,6 +26,26 @@ test("getCredentials prefers registriesCredentials over registrySecrets", async
   t.is(credentials[0].host, "npm.pkg.github.com");
 });
 
+test("getCredentials throws an error when configurations are not an array", async (t) => {
+  const registryCredentials = Buffer.from(
+    JSON.stringify({ type: "npm_registry", token: "abc" }),
+  ).toString("base64");
+
+  t.throws(
+    () =>
+      startProxyExports.getCredentials(
+        getRunnerLogger(true),
+        undefined,
+        registryCredentials,
+        undefined,
+      ),
+    {
+      message:
+        "Expected credentials data to be an array of configurations, but it is not.",
+    },
+  );
+});
+
 test("getCredentials throws error when credential missing host and url", async (t) => {
   const registryCredentials = Buffer.from(
     JSON.stringify([{ type: "npm_registry", token: "abc" }]),
diff --git a/src/start-proxy.ts b/src/start-proxy.ts
index cc9fcb9a75..fab666b890 100644
--- a/src/start-proxy.ts
+++ b/src/start-proxy.ts
@@ -63,6 +63,13 @@ export function getCredentials(
     throw new ConfigurationError("Invalid credentials format.");
   }
 
+  // Check that the parsed data is indeed an array.
+  if (!Array.isArray(parsed)) {
+    throw new ConfigurationError(
+      "Expected credentials data to be an array of configurations, but it is not.",
+    );
+  }
+
   const out: Credential[] = [];
   for (const e of parsed) {
     // Mask credentials to reduce chance of accidental leakage in logs.

From ca0540d37083f7cffeaf83f6e8483b16f1a4d4e1 Mon Sep 17 00:00:00 2001
From: "Michael B. Gale" <mbg@github.com>
Date: Fri, 27 Jun 2025 14:06:57 +0100
Subject: [PATCH 2/4] Check that individual proxy configurations are objects

---
 lib/start-proxy.js          |  3 +++
 lib/start-proxy.js.map      |  2 +-
 lib/start-proxy.test.js     |  9 +++++++++
 lib/start-proxy.test.js.map |  2 +-
 src/start-proxy.test.ts     | 22 ++++++++++++++++++++++
 src/start-proxy.ts          |  4 ++++
 6 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/lib/start-proxy.js b/lib/start-proxy.js
index 902413ef58..0477ff1a5d 100644
--- a/lib/start-proxy.js
+++ b/lib/start-proxy.js
@@ -87,6 +87,9 @@ function getCredentials(logger, registrySecrets, registriesCredentials, language
     }
     const out = [];
     for (const e of parsed) {
+        if (e === null || typeof e !== "object") {
+            throw new util_1.ConfigurationError("Invalid credentials - must be an object");
+        }
         // Mask credentials to reduce chance of accidental leakage in logs.
         if (e.password !== undefined) {
             core.setSecret(e.password);
diff --git a/lib/start-proxy.js.map b/lib/start-proxy.js.map
index ed5747d0ae..458718a8d0 100644
--- a/lib/start-proxy.js.map
+++ b/lib/start-proxy.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.js","sourceRoot":"","sources":["../src/start-proxy.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAgCA,wCA0FC;AA1HD,oDAAsC;AAEtC,2CAAsD;AAEtD,iCAA4C;AAW5C,MAAM,yBAAyB,GAA6B;IAC1D,IAAI,EAAE,kBAAkB;IACxB,MAAM,EAAE,YAAY;IACpB,UAAU,EAAE,cAAc;IAC1B,MAAM,EAAE,cAAc;IACtB,IAAI,EAAE,iBAAiB;IACvB,IAAI,EAAE,gBAAgB;IACtB,EAAE,EAAE,gBAAgB;IACpB,oFAAoF;IACpF,OAAO,EAAE,EAAE;IACX,GAAG,EAAE,EAAE;IACP,KAAK,EAAE,EAAE;CACD,CAAC;AAEX,kEAAkE;AAClE,+DAA+D;AAC/D,gDAAgD;AAChD,SAAgB,cAAc,CAC5B,MAAc,EACd,eAAmC,EACnC,qBAAyC,EACzC,cAAkC;IAElC,MAAM,QAAQ,GAAG,cAAc,CAAC,CAAC,CAAC,IAAA,yBAAa,EAAC,cAAc,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC;IAC5E,MAAM,uBAAuB,GAAG,QAAQ;QACtC,CAAC,CAAC,yBAAyB,CAAC,QAAQ,CAAC;QACrC,CAAC,CAAC,SAAS,CAAC;IAEd,IAAI,cAAsB,CAAC;IAC3B,IAAI,qBAAqB,KAAK,SAAS,EAAE,CAAC;QACxC,MAAM,CAAC,IAAI,CAAC,qCAAqC,CAAC,CAAC;QACnD,cAAc,GAAG,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,CAAC,QAAQ,EAAE,CAAC;IAC3E,CAAC;SAAM,IAAI,eAAe,KAAK,SAAS,EAAE,CAAC;QACzC,MAAM,CAAC,IAAI,CAAC,+BAA+B,CAAC,CAAC;QAC7C,cAAc,GAAG,eAAe,CAAC;IACnC,CAAC;SAAM,CAAC;QACN,MAAM,CAAC,IAAI,CAAC,yBAAyB,CAAC,CAAC;QACvC,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,qCAAqC;IACrC,IAAI,MAAoB,CAAC;IACzB,IAAI,CAAC;QACH,MAAM,GAAG,IAAI,CAAC,KAAK,CAAC,cAAc,CAAiB,CAAC;IACtD,CAAC;IAAC,MAAM,CAAC;QACP,oEAAoE;QACpE,MAAM,CAAC,KAAK,CAAC,uCAAuC,CAAC,CAAC;QACtD,MAAM,IAAI,yBAAkB,CAAC,6BAA6B,CAAC,CAAC;IAC9D,CAAC;IAED,iDAAiD;IACjD,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC,EAAE,CAAC;QAC3B,MAAM,IAAI,yBAAkB,CAC1B,4EAA4E,CAC7E,CAAC;IACJ,CAAC;IAED,MAAM,GAAG,GAAiB,EAAE,CAAC;IAC7B,KAAK,MAAM,CAAC,IAAI,MAAM,EAAE,CAAC;QACvB,mEAAmE;QACnE,IAAI,CAAC,CAAC,QAAQ,KAAK,SAAS,EAAE,CAAC;YAC7B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC;QACD,IAAI,CAAC,CAAC,KAAK,KAAK,SAAS,EAAE,CAAC;YAC1B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QAC1B,CAAC;QAED,IAAI,CAAC,CAAC,GAAG,KAAK,SAAS,IAAI,CAAC,CAAC,IAAI,KAAK,SAAS,EAAE,CAAC;YAChD,yFAAyF;YACzF,MAAM,IAAI,yBAAkB,CAC1B,gDAAgD,CACjD,CAAC;QACJ,CAAC;QAED,kFAAkF;QAClF,iEAAiE;QACjE,IAAI,uBAAuB,IAAI,CAAC,CAAC,IAAI,KAAK,uBAAuB,EAAE,CAAC;YAClE,SAAS;QACX,CAAC;QAED,MAAM,WAAW,GAAG,CAAC,GAAuB,EAAW,EAAE;YACvD,OAAO,GAAG,CAAC,CAAC,CAAC,gBAAgB,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QACjD,CAAC,CAAC;QAEF,IACE,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC;YACnB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,KAAK,CAAC,EACrB,CAAC;YACD,MAAM,IAAI,yBAAkB,CAC1B,qEAAqE,CACtE,CAAC;QACJ,CAAC;QAED,GAAG,CAAC,IAAI,CAAC;YACP,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,GAAG,EAAE,CAAC,CAAC,GAAG;YACV,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,KAAK,EAAE,CAAC,CAAC,KAAK;SACf,CAAC,CAAC;IACL,CAAC;IACD,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.js","sourceRoot":"","sources":["../src/start-proxy.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAgCA,wCA8FC;AA9HD,oDAAsC;AAEtC,2CAAsD;AAEtD,iCAA4C;AAW5C,MAAM,yBAAyB,GAA6B;IAC1D,IAAI,EAAE,kBAAkB;IACxB,MAAM,EAAE,YAAY;IACpB,UAAU,EAAE,cAAc;IAC1B,MAAM,EAAE,cAAc;IACtB,IAAI,EAAE,iBAAiB;IACvB,IAAI,EAAE,gBAAgB;IACtB,EAAE,EAAE,gBAAgB;IACpB,oFAAoF;IACpF,OAAO,EAAE,EAAE;IACX,GAAG,EAAE,EAAE;IACP,KAAK,EAAE,EAAE;CACD,CAAC;AAEX,kEAAkE;AAClE,+DAA+D;AAC/D,gDAAgD;AAChD,SAAgB,cAAc,CAC5B,MAAc,EACd,eAAmC,EACnC,qBAAyC,EACzC,cAAkC;IAElC,MAAM,QAAQ,GAAG,cAAc,CAAC,CAAC,CAAC,IAAA,yBAAa,EAAC,cAAc,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC;IAC5E,MAAM,uBAAuB,GAAG,QAAQ;QACtC,CAAC,CAAC,yBAAyB,CAAC,QAAQ,CAAC;QACrC,CAAC,CAAC,SAAS,CAAC;IAEd,IAAI,cAAsB,CAAC;IAC3B,IAAI,qBAAqB,KAAK,SAAS,EAAE,CAAC;QACxC,MAAM,CAAC,IAAI,CAAC,qCAAqC,CAAC,CAAC;QACnD,cAAc,GAAG,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,CAAC,QAAQ,EAAE,CAAC;IAC3E,CAAC;SAAM,IAAI,eAAe,KAAK,SAAS,EAAE,CAAC;QACzC,MAAM,CAAC,IAAI,CAAC,+BAA+B,CAAC,CAAC;QAC7C,cAAc,GAAG,eAAe,CAAC;IACnC,CAAC;SAAM,CAAC;QACN,MAAM,CAAC,IAAI,CAAC,yBAAyB,CAAC,CAAC;QACvC,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,qCAAqC;IACrC,IAAI,MAAoB,CAAC;IACzB,IAAI,CAAC;QACH,MAAM,GAAG,IAAI,CAAC,KAAK,CAAC,cAAc,CAAiB,CAAC;IACtD,CAAC;IAAC,MAAM,CAAC;QACP,oEAAoE;QACpE,MAAM,CAAC,KAAK,CAAC,uCAAuC,CAAC,CAAC;QACtD,MAAM,IAAI,yBAAkB,CAAC,6BAA6B,CAAC,CAAC;IAC9D,CAAC;IAED,iDAAiD;IACjD,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC,EAAE,CAAC;QAC3B,MAAM,IAAI,yBAAkB,CAC1B,4EAA4E,CAC7E,CAAC;IACJ,CAAC;IAED,MAAM,GAAG,GAAiB,EAAE,CAAC;IAC7B,KAAK,MAAM,CAAC,IAAI,MAAM,EAAE,CAAC;QACvB,IAAI,CAAC,KAAK,IAAI,IAAI,OAAO,CAAC,KAAK,QAAQ,EAAE,CAAC;YACxC,MAAM,IAAI,yBAAkB,CAAC,yCAAyC,CAAC,CAAC;QAC1E,CAAC;QAED,mEAAmE;QACnE,IAAI,CAAC,CAAC,QAAQ,KAAK,SAAS,EAAE,CAAC;YAC7B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC;QACD,IAAI,CAAC,CAAC,KAAK,KAAK,SAAS,EAAE,CAAC;YAC1B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QAC1B,CAAC;QAED,IAAI,CAAC,CAAC,GAAG,KAAK,SAAS,IAAI,CAAC,CAAC,IAAI,KAAK,SAAS,EAAE,CAAC;YAChD,yFAAyF;YACzF,MAAM,IAAI,yBAAkB,CAC1B,gDAAgD,CACjD,CAAC;QACJ,CAAC;QAED,kFAAkF;QAClF,iEAAiE;QACjE,IAAI,uBAAuB,IAAI,CAAC,CAAC,IAAI,KAAK,uBAAuB,EAAE,CAAC;YAClE,SAAS;QACX,CAAC;QAED,MAAM,WAAW,GAAG,CAAC,GAAuB,EAAW,EAAE;YACvD,OAAO,GAAG,CAAC,CAAC,CAAC,gBAAgB,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QACjD,CAAC,CAAC;QAEF,IACE,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC;YACnB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,KAAK,CAAC,EACrB,CAAC;YACD,MAAM,IAAI,yBAAkB,CAC1B,qEAAqE,CACtE,CAAC;QACJ,CAAC;QAED,GAAG,CAAC,IAAI,CAAC;YACP,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,GAAG,EAAE,CAAC,CAAC,GAAG;YACV,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,KAAK,EAAE,CAAC,CAAC,KAAK;SACf,CAAC,CAAC;IACL,CAAC;IACD,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
diff --git a/lib/start-proxy.test.js b/lib/start-proxy.test.js
index c41cbd65e8..c82975f303 100644
--- a/lib/start-proxy.test.js
+++ b/lib/start-proxy.test.js
@@ -41,6 +41,7 @@ const logging_1 = require("./logging");
 const startProxyExports = __importStar(require("./start-proxy"));
 const testing_utils_1 = require("./testing-utils");
 (0, testing_utils_1.setupTests)(ava_1.default);
+const toEncodedJSON = (data) => Buffer.from(JSON.stringify(data)).toString("base64");
 (0, ava_1.default)("getCredentials prefers registriesCredentials over registrySecrets", async (t) => {
     const registryCredentials = Buffer.from(JSON.stringify([
         { type: "npm_registry", host: "npm.pkg.github.com", token: "abc" },
@@ -58,6 +59,14 @@ const testing_utils_1 = require("./testing-utils");
         message: "Expected credentials data to be an array of configurations, but it is not.",
     });
 });
+(0, ava_1.default)("getCredentials throws error when credential is not an object", async (t) => {
+    const testCredentials = [["foo"], [null]].map(toEncodedJSON);
+    for (const testCredential of testCredentials) {
+        t.throws(() => startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, testCredential, undefined), {
+            message: "Invalid credentials - must be an object",
+        });
+    }
+});
 (0, ava_1.default)("getCredentials throws error when credential missing host and url", async (t) => {
     const registryCredentials = Buffer.from(JSON.stringify([{ type: "npm_registry", token: "abc" }])).toString("base64");
     t.throws(() => startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, registryCredentials, undefined), {
diff --git a/lib/start-proxy.test.js.map b/lib/start-proxy.test.js.map
index de65f1fc4a..13af80b18a 100644
--- a/lib/start-proxy.test.js.map
+++ b/lib/start-proxy.test.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,CACzD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EAAE,gDAAgD;KAC1D,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,MAAM,aAAa,GAAG,CAAC,IAAS,EAAE,EAAE,CAClC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;AAEvD,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,8DAA8D,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IAC/E,MAAM,eAAe,GAAG,CAAC,CAAC,KAAK,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAE7D,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,yCAAyC;SACnD,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,CACzD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EAAE,gDAAgD;KAC1D,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
diff --git a/src/start-proxy.test.ts b/src/start-proxy.test.ts
index 466d528c6d..b563453122 100644
--- a/src/start-proxy.test.ts
+++ b/src/start-proxy.test.ts
@@ -6,6 +6,9 @@ import { setupTests } from "./testing-utils";
 
 setupTests(test);
 
+const toEncodedJSON = (data: any) =>
+  Buffer.from(JSON.stringify(data)).toString("base64");
+
 test("getCredentials prefers registriesCredentials over registrySecrets", async (t) => {
   const registryCredentials = Buffer.from(
     JSON.stringify([
@@ -46,6 +49,25 @@ test("getCredentials throws an error when configurations are not an array", asyn
   );
 });
 
+test("getCredentials throws error when credential is not an object", async (t) => {
+  const testCredentials = [["foo"], [null]].map(toEncodedJSON);
+
+  for (const testCredential of testCredentials) {
+    t.throws(
+      () =>
+        startProxyExports.getCredentials(
+          getRunnerLogger(true),
+          undefined,
+          testCredential,
+          undefined,
+        ),
+      {
+        message: "Invalid credentials - must be an object",
+      },
+    );
+  }
+});
+
 test("getCredentials throws error when credential missing host and url", async (t) => {
   const registryCredentials = Buffer.from(
     JSON.stringify([{ type: "npm_registry", token: "abc" }]),
diff --git a/src/start-proxy.ts b/src/start-proxy.ts
index fab666b890..7b7cedaed1 100644
--- a/src/start-proxy.ts
+++ b/src/start-proxy.ts
@@ -72,6 +72,10 @@ export function getCredentials(
 
   const out: Credential[] = [];
   for (const e of parsed) {
+    if (e === null || typeof e !== "object") {
+      throw new ConfigurationError("Invalid credentials - must be an object");
+    }
+
     // Mask credentials to reduce chance of accidental leakage in logs.
     if (e.password !== undefined) {
       core.setSecret(e.password);

From 6b83dc33ed025a7347650a5953f523cddd9d5c9f Mon Sep 17 00:00:00 2001
From: "Michael B. Gale" <mbg@github.com>
Date: Fri, 27 Jun 2025 14:16:21 +0100
Subject: [PATCH 3/4] Check for `null` in addition to `undefined`; extend tests
 accordingly

---
 lib/start-proxy.js          | 14 +++++++++++---
 lib/start-proxy.js.map      |  2 +-
 lib/start-proxy.test.js     | 14 ++++++++++----
 lib/start-proxy.test.js.map |  2 +-
 src/start-proxy.test.ts     | 34 +++++++++++++++++++---------------
 src/start-proxy.ts          | 15 ++++++++++++---
 6 files changed, 54 insertions(+), 27 deletions(-)

diff --git a/lib/start-proxy.js b/lib/start-proxy.js
index 0477ff1a5d..60a4eeb053 100644
--- a/lib/start-proxy.js
+++ b/lib/start-proxy.js
@@ -50,6 +50,14 @@ const LANGUAGE_TO_REGISTRY_TYPE = {
     cpp: "",
     swift: "",
 };
+/**
+ * Checks that `value` is neither `undefined` nor `null`.
+ * @param value The value to test.
+ * @returns Narrows the type of `value` to exclude `undefined` and `null`.
+ */
+function isDefined(value) {
+    return value !== undefined && value !== null;
+}
 // getCredentials returns registry credentials from action inputs.
 // It prefers `registries_credentials` over `registry_secrets`.
 // If neither is set, it returns an empty array.
@@ -91,13 +99,13 @@ function getCredentials(logger, registrySecrets, registriesCredentials, language
             throw new util_1.ConfigurationError("Invalid credentials - must be an object");
         }
         // Mask credentials to reduce chance of accidental leakage in logs.
-        if (e.password !== undefined) {
+        if (isDefined(e.password)) {
             core.setSecret(e.password);
         }
-        if (e.token !== undefined) {
+        if (isDefined(e.token)) {
             core.setSecret(e.token);
         }
-        if (e.url === undefined && e.host === undefined) {
+        if (!isDefined(e.url) && !isDefined(e.host)) {
             // The proxy needs one of these to work. If both are defined, the url has the precedence.
             throw new util_1.ConfigurationError("Invalid credentials - must specify host or url");
         }
diff --git a/lib/start-proxy.js.map b/lib/start-proxy.js.map
index 458718a8d0..1fa39a9993 100644
--- a/lib/start-proxy.js.map
+++ b/lib/start-proxy.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.js","sourceRoot":"","sources":["../src/start-proxy.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAgCA,wCA8FC;AA9HD,oDAAsC;AAEtC,2CAAsD;AAEtD,iCAA4C;AAW5C,MAAM,yBAAyB,GAA6B;IAC1D,IAAI,EAAE,kBAAkB;IACxB,MAAM,EAAE,YAAY;IACpB,UAAU,EAAE,cAAc;IAC1B,MAAM,EAAE,cAAc;IACtB,IAAI,EAAE,iBAAiB;IACvB,IAAI,EAAE,gBAAgB;IACtB,EAAE,EAAE,gBAAgB;IACpB,oFAAoF;IACpF,OAAO,EAAE,EAAE;IACX,GAAG,EAAE,EAAE;IACP,KAAK,EAAE,EAAE;CACD,CAAC;AAEX,kEAAkE;AAClE,+DAA+D;AAC/D,gDAAgD;AAChD,SAAgB,cAAc,CAC5B,MAAc,EACd,eAAmC,EACnC,qBAAyC,EACzC,cAAkC;IAElC,MAAM,QAAQ,GAAG,cAAc,CAAC,CAAC,CAAC,IAAA,yBAAa,EAAC,cAAc,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC;IAC5E,MAAM,uBAAuB,GAAG,QAAQ;QACtC,CAAC,CAAC,yBAAyB,CAAC,QAAQ,CAAC;QACrC,CAAC,CAAC,SAAS,CAAC;IAEd,IAAI,cAAsB,CAAC;IAC3B,IAAI,qBAAqB,KAAK,SAAS,EAAE,CAAC;QACxC,MAAM,CAAC,IAAI,CAAC,qCAAqC,CAAC,CAAC;QACnD,cAAc,GAAG,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,CAAC,QAAQ,EAAE,CAAC;IAC3E,CAAC;SAAM,IAAI,eAAe,KAAK,SAAS,EAAE,CAAC;QACzC,MAAM,CAAC,IAAI,CAAC,+BAA+B,CAAC,CAAC;QAC7C,cAAc,GAAG,eAAe,CAAC;IACnC,CAAC;SAAM,CAAC;QACN,MAAM,CAAC,IAAI,CAAC,yBAAyB,CAAC,CAAC;QACvC,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,qCAAqC;IACrC,IAAI,MAAoB,CAAC;IACzB,IAAI,CAAC;QACH,MAAM,GAAG,IAAI,CAAC,KAAK,CAAC,cAAc,CAAiB,CAAC;IACtD,CAAC;IAAC,MAAM,CAAC;QACP,oEAAoE;QACpE,MAAM,CAAC,KAAK,CAAC,uCAAuC,CAAC,CAAC;QACtD,MAAM,IAAI,yBAAkB,CAAC,6BAA6B,CAAC,CAAC;IAC9D,CAAC;IAED,iDAAiD;IACjD,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC,EAAE,CAAC;QAC3B,MAAM,IAAI,yBAAkB,CAC1B,4EAA4E,CAC7E,CAAC;IACJ,CAAC;IAED,MAAM,GAAG,GAAiB,EAAE,CAAC;IAC7B,KAAK,MAAM,CAAC,IAAI,MAAM,EAAE,CAAC;QACvB,IAAI,CAAC,KAAK,IAAI,IAAI,OAAO,CAAC,KAAK,QAAQ,EAAE,CAAC;YACxC,MAAM,IAAI,yBAAkB,CAAC,yCAAyC,CAAC,CAAC;QAC1E,CAAC;QAED,mEAAmE;QACnE,IAAI,CAAC,CAAC,QAAQ,KAAK,SAAS,EAAE,CAAC;YAC7B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC;QACD,IAAI,CAAC,CAAC,KAAK,KAAK,SAAS,EAAE,CAAC;YAC1B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QAC1B,CAAC;QAED,IAAI,CAAC,CAAC,GAAG,KAAK,SAAS,IAAI,CAAC,CAAC,IAAI,KAAK,SAAS,EAAE,CAAC;YAChD,yFAAyF;YACzF,MAAM,IAAI,yBAAkB,CAC1B,gDAAgD,CACjD,CAAC;QACJ,CAAC;QAED,kFAAkF;QAClF,iEAAiE;QACjE,IAAI,uBAAuB,IAAI,CAAC,CAAC,IAAI,KAAK,uBAAuB,EAAE,CAAC;YAClE,SAAS;QACX,CAAC;QAED,MAAM,WAAW,GAAG,CAAC,GAAuB,EAAW,EAAE;YACvD,OAAO,GAAG,CAAC,CAAC,CAAC,gBAAgB,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QACjD,CAAC,CAAC;QAEF,IACE,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC;YACnB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,KAAK,CAAC,EACrB,CAAC;YACD,MAAM,IAAI,yBAAkB,CAC1B,qEAAqE,CACtE,CAAC;QACJ,CAAC;QAED,GAAG,CAAC,IAAI,CAAC;YACP,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,GAAG,EAAE,CAAC,CAAC,GAAG;YACV,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,KAAK,EAAE,CAAC,CAAC,KAAK;SACf,CAAC,CAAC;IACL,CAAC;IACD,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.js","sourceRoot":"","sources":["../src/start-proxy.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAyCA,wCA8FC;AAvID,oDAAsC;AAEtC,2CAAsD;AAEtD,iCAA4C;AAW5C,MAAM,yBAAyB,GAA6B;IAC1D,IAAI,EAAE,kBAAkB;IACxB,MAAM,EAAE,YAAY;IACpB,UAAU,EAAE,cAAc;IAC1B,MAAM,EAAE,cAAc;IACtB,IAAI,EAAE,iBAAiB;IACvB,IAAI,EAAE,gBAAgB;IACtB,EAAE,EAAE,gBAAgB;IACpB,oFAAoF;IACpF,OAAO,EAAE,EAAE;IACX,GAAG,EAAE,EAAE;IACP,KAAK,EAAE,EAAE;CACD,CAAC;AAEX;;;;GAIG;AACH,SAAS,SAAS,CAAI,KAA2B;IAC/C,OAAO,KAAK,KAAK,SAAS,IAAI,KAAK,KAAK,IAAI,CAAC;AAC/C,CAAC;AAED,kEAAkE;AAClE,+DAA+D;AAC/D,gDAAgD;AAChD,SAAgB,cAAc,CAC5B,MAAc,EACd,eAAmC,EACnC,qBAAyC,EACzC,cAAkC;IAElC,MAAM,QAAQ,GAAG,cAAc,CAAC,CAAC,CAAC,IAAA,yBAAa,EAAC,cAAc,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC;IAC5E,MAAM,uBAAuB,GAAG,QAAQ;QACtC,CAAC,CAAC,yBAAyB,CAAC,QAAQ,CAAC;QACrC,CAAC,CAAC,SAAS,CAAC;IAEd,IAAI,cAAsB,CAAC;IAC3B,IAAI,qBAAqB,KAAK,SAAS,EAAE,CAAC;QACxC,MAAM,CAAC,IAAI,CAAC,qCAAqC,CAAC,CAAC;QACnD,cAAc,GAAG,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,CAAC,QAAQ,EAAE,CAAC;IAC3E,CAAC;SAAM,IAAI,eAAe,KAAK,SAAS,EAAE,CAAC;QACzC,MAAM,CAAC,IAAI,CAAC,+BAA+B,CAAC,CAAC;QAC7C,cAAc,GAAG,eAAe,CAAC;IACnC,CAAC;SAAM,CAAC;QACN,MAAM,CAAC,IAAI,CAAC,yBAAyB,CAAC,CAAC;QACvC,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,qCAAqC;IACrC,IAAI,MAAoB,CAAC;IACzB,IAAI,CAAC;QACH,MAAM,GAAG,IAAI,CAAC,KAAK,CAAC,cAAc,CAAiB,CAAC;IACtD,CAAC;IAAC,MAAM,CAAC;QACP,oEAAoE;QACpE,MAAM,CAAC,KAAK,CAAC,uCAAuC,CAAC,CAAC;QACtD,MAAM,IAAI,yBAAkB,CAAC,6BAA6B,CAAC,CAAC;IAC9D,CAAC;IAED,iDAAiD;IACjD,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC,EAAE,CAAC;QAC3B,MAAM,IAAI,yBAAkB,CAC1B,4EAA4E,CAC7E,CAAC;IACJ,CAAC;IAED,MAAM,GAAG,GAAiB,EAAE,CAAC;IAC7B,KAAK,MAAM,CAAC,IAAI,MAAM,EAAE,CAAC;QACvB,IAAI,CAAC,KAAK,IAAI,IAAI,OAAO,CAAC,KAAK,QAAQ,EAAE,CAAC;YACxC,MAAM,IAAI,yBAAkB,CAAC,yCAAyC,CAAC,CAAC;QAC1E,CAAC;QAED,mEAAmE;QACnE,IAAI,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,EAAE,CAAC;YAC1B,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC;QACD,IAAI,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,EAAE,CAAC;YACvB,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QAC1B,CAAC;QAED,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,GAAG,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC;YAC5C,yFAAyF;YACzF,MAAM,IAAI,yBAAkB,CAC1B,gDAAgD,CACjD,CAAC;QACJ,CAAC;QAED,kFAAkF;QAClF,iEAAiE;QACjE,IAAI,uBAAuB,IAAI,CAAC,CAAC,IAAI,KAAK,uBAAuB,EAAE,CAAC;YAClE,SAAS;QACX,CAAC;QAED,MAAM,WAAW,GAAG,CAAC,GAAuB,EAAW,EAAE;YACvD,OAAO,GAAG,CAAC,CAAC,CAAC,gBAAgB,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QACjD,CAAC,CAAC;QAEF,IACE,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;YACpB,CAAC,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC;YACnB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,QAAQ,CAAC;YACxB,CAAC,WAAW,CAAC,CAAC,CAAC,KAAK,CAAC,EACrB,CAAC;YACD,MAAM,IAAI,yBAAkB,CAC1B,qEAAqE,CACtE,CAAC;QACJ,CAAC;QAED,GAAG,CAAC,IAAI,CAAC;YACP,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,IAAI,EAAE,CAAC,CAAC,IAAI;YACZ,GAAG,EAAE,CAAC,CAAC,GAAG;YACV,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,QAAQ,EAAE,CAAC,CAAC,QAAQ;YACpB,KAAK,EAAE,CAAC,CAAC,KAAK;SACf,CAAC,CAAC;IACL,CAAC;IACD,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
diff --git a/lib/start-proxy.test.js b/lib/start-proxy.test.js
index c82975f303..122e9dd709 100644
--- a/lib/start-proxy.test.js
+++ b/lib/start-proxy.test.js
@@ -68,10 +68,16 @@ const toEncodedJSON = (data) => Buffer.from(JSON.stringify(data)).toString("base
     }
 });
 (0, ava_1.default)("getCredentials throws error when credential missing host and url", async (t) => {
-    const registryCredentials = Buffer.from(JSON.stringify([{ type: "npm_registry", token: "abc" }])).toString("base64");
-    t.throws(() => startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, registryCredentials, undefined), {
-        message: "Invalid credentials - must specify host or url",
-    });
+    const testCredentials = [
+        [{ type: "npm_registry", token: "abc" }],
+        [{ type: "npm_registry", token: "abc", host: null }],
+        [{ type: "npm_registry", token: "abc", url: null }],
+    ].map(toEncodedJSON);
+    for (const testCredential of testCredentials) {
+        t.throws(() => startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, testCredential, undefined), {
+            message: "Invalid credentials - must specify host or url",
+        });
+    }
 });
 (0, ava_1.default)("getCredentials filters by language when specified", async (t) => {
     const mixedCredentials = [
diff --git a/lib/start-proxy.test.js.map b/lib/start-proxy.test.js.map
index 13af80b18a..394d8d6c1c 100644
--- a/lib/start-proxy.test.js.map
+++ b/lib/start-proxy.test.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,MAAM,aAAa,GAAG,CAAC,IAAS,EAAE,EAAE,CAClC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;AAEvD,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,8DAA8D,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IAC/E,MAAM,eAAe,GAAG,CAAC,CAAC,KAAK,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAE7D,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,yCAAyC;SACnD,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,CACzD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EAAE,gDAAgD;KAC1D,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,MAAM,aAAa,GAAG,CAAC,IAAS,EAAE,EAAE,CAClC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;AAEvD,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,8DAA8D,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IAC/E,MAAM,eAAe,GAAG,CAAC,CAAC,KAAK,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAE7D,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,yCAAyC;SACnD,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,eAAe,GAAG;QACtB,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC;QACxC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE,IAAI,EAAE,CAAC;QACpD,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,GAAG,EAAE,IAAI,EAAE,CAAC;KACpD,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAErB,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,gDAAgD;SAC1D,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
diff --git a/src/start-proxy.test.ts b/src/start-proxy.test.ts
index b563453122..78be3b614a 100644
--- a/src/start-proxy.test.ts
+++ b/src/start-proxy.test.ts
@@ -69,22 +69,26 @@ test("getCredentials throws error when credential is not an object", async (t) =
 });
 
 test("getCredentials throws error when credential missing host and url", async (t) => {
-  const registryCredentials = Buffer.from(
-    JSON.stringify([{ type: "npm_registry", token: "abc" }]),
-  ).toString("base64");
+  const testCredentials = [
+    [{ type: "npm_registry", token: "abc" }],
+    [{ type: "npm_registry", token: "abc", host: null }],
+    [{ type: "npm_registry", token: "abc", url: null }],
+  ].map(toEncodedJSON);
 
-  t.throws(
-    () =>
-      startProxyExports.getCredentials(
-        getRunnerLogger(true),
-        undefined,
-        registryCredentials,
-        undefined,
-      ),
-    {
-      message: "Invalid credentials - must specify host or url",
-    },
-  );
+  for (const testCredential of testCredentials) {
+    t.throws(
+      () =>
+        startProxyExports.getCredentials(
+          getRunnerLogger(true),
+          undefined,
+          testCredential,
+          undefined,
+        ),
+      {
+        message: "Invalid credentials - must specify host or url",
+      },
+    );
+  }
 });
 
 test("getCredentials filters by language when specified", async (t) => {
diff --git a/src/start-proxy.ts b/src/start-proxy.ts
index 7b7cedaed1..6924fe7154 100644
--- a/src/start-proxy.ts
+++ b/src/start-proxy.ts
@@ -27,6 +27,15 @@ const LANGUAGE_TO_REGISTRY_TYPE: Record<Language, string> = {
   swift: "",
 } as const;
 
+/**
+ * Checks that `value` is neither `undefined` nor `null`.
+ * @param value The value to test.
+ * @returns Narrows the type of `value` to exclude `undefined` and `null`.
+ */
+function isDefined<T>(value: T | null | undefined): value is T {
+  return value !== undefined && value !== null;
+}
+
 // getCredentials returns registry credentials from action inputs.
 // It prefers `registries_credentials` over `registry_secrets`.
 // If neither is set, it returns an empty array.
@@ -77,14 +86,14 @@ export function getCredentials(
     }
 
     // Mask credentials to reduce chance of accidental leakage in logs.
-    if (e.password !== undefined) {
+    if (isDefined(e.password)) {
       core.setSecret(e.password);
     }
-    if (e.token !== undefined) {
+    if (isDefined(e.token)) {
       core.setSecret(e.token);
     }
 
-    if (e.url === undefined && e.host === undefined) {
+    if (!isDefined(e.url) && !isDefined(e.host)) {
       // The proxy needs one of these to work. If both are defined, the url has the precedence.
       throw new ConfigurationError(
         "Invalid credentials - must specify host or url",

From 9281048a40e0b1a0eef05e9e9ccc599bc2a20b98 Mon Sep 17 00:00:00 2001
From: "Michael B. Gale" <mbg@github.com>
Date: Fri, 27 Jun 2025 14:19:17 +0100
Subject: [PATCH 4/4] Include `goproxy_server` in configuration filtering tests

---
 lib/start-proxy.test.js     |  8 +++++---
 lib/start-proxy.test.js.map |  2 +-
 src/start-proxy.test.ts     | 10 +++++-----
 3 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/lib/start-proxy.test.js b/lib/start-proxy.test.js
index 122e9dd709..f7ad5ddbae 100644
--- a/lib/start-proxy.test.js
+++ b/lib/start-proxy.test.js
@@ -84,8 +84,9 @@ const toEncodedJSON = (data) => Buffer.from(JSON.stringify(data)).toString("base
         { type: "npm_registry", host: "npm.pkg.github.com", token: "abc" },
         { type: "maven_repository", host: "maven.pkg.github.com", token: "def" },
         { type: "nuget_feed", host: "nuget.pkg.github.com", token: "ghi" },
+        { type: "goproxy_server", host: "goproxy.example.com", token: "jkl" },
     ];
-    const credentials = startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, Buffer.from(JSON.stringify(mixedCredentials)).toString("base64"), "java");
+    const credentials = startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, toEncodedJSON(mixedCredentials), "java");
     t.is(credentials.length, 1);
     t.is(credentials[0].type, "maven_repository");
 });
@@ -94,10 +95,11 @@ const toEncodedJSON = (data) => Buffer.from(JSON.stringify(data)).toString("base
         { type: "npm_registry", host: "npm.pkg.github.com", token: "abc" },
         { type: "maven_repository", host: "maven.pkg.github.com", token: "def" },
         { type: "nuget_feed", host: "nuget.pkg.github.com", token: "ghi" },
+        { type: "goproxy_server", host: "goproxy.example.com", token: "jkl" },
     ];
-    const credentialsInput = Buffer.from(JSON.stringify(mixedCredentials)).toString("base64");
+    const credentialsInput = toEncodedJSON(mixedCredentials);
     const credentials = startProxyExports.getCredentials((0, logging_1.getRunnerLogger)(true), undefined, credentialsInput, undefined);
-    t.is(credentials.length, 3);
+    t.is(credentials.length, mixedCredentials.length);
 });
 (0, ava_1.default)("getCredentials throws an error when non-printable characters are used", async (t) => {
     const invalidCredentials = [
diff --git a/lib/start-proxy.test.js.map b/lib/start-proxy.test.js.map
index 394d8d6c1c..6e3758784e 100644
--- a/lib/start-proxy.test.js.map
+++ b/lib/start-proxy.test.js.map
@@ -1 +1 @@
-{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,MAAM,aAAa,GAAG,CAAC,IAAS,EAAE,EAAE,CAClC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;AAEvD,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,8DAA8D,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IAC/E,MAAM,eAAe,GAAG,CAAC,CAAC,KAAK,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAE7D,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,yCAAyC;SACnD,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,eAAe,GAAG;QACtB,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC;QACxC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE,IAAI,EAAE,CAAC;QACpD,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,GAAG,EAAE,IAAI,EAAE,CAAC;KACpD,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAErB,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,gDAAgD;SAC1D,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,EAChE,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC;IACF,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,gBAAgB,CAAC,CACjC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
+{"version":3,"file":"start-proxy.test.js","sourceRoot":"","sources":["../src/start-proxy.test.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA,8CAAuB;AAEvB,uCAA4C;AAC5C,iEAAmD;AACnD,mDAA6C;AAE7C,IAAA,0BAAU,EAAC,aAAI,CAAC,CAAC;AAEjB,MAAM,aAAa,GAAG,CAAC,IAAS,EAAE,EAAE,CAClC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;AAEvD,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC;QACb,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CACH,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IACrB,MAAM,eAAe,GAAG,IAAI,CAAC,SAAS,CAAC;QACrC,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;KACnE,CAAC,CAAC;IAEH,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,eAAe,EACf,mBAAmB,EACnB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,oBAAoB,CAAC,CAAC;AAClD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,qEAAqE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACtF,MAAM,mBAAmB,GAAG,MAAM,CAAC,IAAI,CACrC,IAAI,CAAC,SAAS,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CACvD,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;IAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,mBAAmB,EACnB,SAAS,CACV,EACH;QACE,OAAO,EACL,4EAA4E;KAC/E,CACF,CAAC;AACJ,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,8DAA8D,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IAC/E,MAAM,eAAe,GAAG,CAAC,CAAC,KAAK,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAE7D,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,yCAAyC;SACnD,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,kEAAkE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACnF,MAAM,eAAe,GAAG;QACtB,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC;QACxC,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE,IAAI,EAAE,CAAC;QACpD,CAAC,EAAE,IAAI,EAAE,cAAc,EAAE,KAAK,EAAE,KAAK,EAAE,GAAG,EAAE,IAAI,EAAE,CAAC;KACpD,CAAC,GAAG,CAAC,aAAa,CAAC,CAAC;IAErB,KAAK,MAAM,cAAc,IAAI,eAAe,EAAE,CAAC;QAC7C,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,cAAc,EACd,SAAS,CACV,EACH;YACE,OAAO,EAAE,gDAAgD;SAC1D,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mDAAmD,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpE,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,gBAAgB,EAAE,IAAI,EAAE,qBAAqB,EAAE,KAAK,EAAE,KAAK,EAAE;KACtE,CAAC;IAEF,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,aAAa,CAAC,gBAAgB,CAAC,EAC/B,MAAM,CACP,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;IAC5B,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE,kBAAkB,CAAC,CAAC;AAChD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,mEAAmE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACpF,MAAM,gBAAgB,GAAG;QACvB,EAAE,IAAI,EAAE,cAAc,EAAE,IAAI,EAAE,oBAAoB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QACxE,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,sBAAsB,EAAE,KAAK,EAAE,KAAK,EAAE;QAClE,EAAE,IAAI,EAAE,gBAAgB,EAAE,IAAI,EAAE,qBAAqB,EAAE,KAAK,EAAE,KAAK,EAAE;KACtE,CAAC;IACF,MAAM,gBAAgB,GAAG,aAAa,CAAC,gBAAgB,CAAC,CAAC;IAEzD,MAAM,WAAW,GAAG,iBAAiB,CAAC,cAAc,CAClD,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,CAAC;IACF,CAAC,CAAC,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,gBAAgB,CAAC,MAAM,CAAC,CAAC;AACpD,CAAC,CAAC,CAAC;AAEH,IAAA,aAAI,EAAC,uEAAuE,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE;IACxF,MAAM,kBAAkB,GAAG;QACzB,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,KAAK,EAAE,WAAW,EAAE,EAAE,mCAAmC;QAC9G,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,6BAA6B,EAAE,EAAE,kCAAkC;QAC/F;YACE,IAAI,EAAE,YAAY;YAClB,IAAI,EAAE,uBAAuB;YAC7B,QAAQ,EAAE,WAAW;SACtB,EAAE,sCAAsC;QACzC,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,uBAAuB,EAAE,QAAQ,EAAE,SAAS,EAAE,EAAE,sCAAsC;KACnH,CAAC;IAEF,KAAK,MAAM,iBAAiB,IAAI,kBAAkB,EAAE,CAAC;QACnD,MAAM,gBAAgB,GAAG,MAAM,CAAC,IAAI,CAClC,IAAI,CAAC,SAAS,CAAC,CAAC,iBAAiB,CAAC,CAAC,CACpC,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;QAErB,CAAC,CAAC,MAAM,CACN,GAAG,EAAE,CACH,iBAAiB,CAAC,cAAc,CAC9B,IAAA,yBAAe,EAAC,IAAI,CAAC,EACrB,SAAS,EACT,gBAAgB,EAChB,SAAS,CACV,EACH;YACE,OAAO,EACL,qEAAqE;SACxE,CACF,CAAC;IACJ,CAAC;AACH,CAAC,CAAC,CAAC"}
\ No newline at end of file
diff --git a/src/start-proxy.test.ts b/src/start-proxy.test.ts
index 78be3b614a..edd29ea619 100644
--- a/src/start-proxy.test.ts
+++ b/src/start-proxy.test.ts
@@ -96,12 +96,13 @@ test("getCredentials filters by language when specified", async (t) => {
     { type: "npm_registry", host: "npm.pkg.github.com", token: "abc" },
     { type: "maven_repository", host: "maven.pkg.github.com", token: "def" },
     { type: "nuget_feed", host: "nuget.pkg.github.com", token: "ghi" },
+    { type: "goproxy_server", host: "goproxy.example.com", token: "jkl" },
   ];
 
   const credentials = startProxyExports.getCredentials(
     getRunnerLogger(true),
     undefined,
-    Buffer.from(JSON.stringify(mixedCredentials)).toString("base64"),
+    toEncodedJSON(mixedCredentials),
     "java",
   );
   t.is(credentials.length, 1);
@@ -113,10 +114,9 @@ test("getCredentials returns all credentials when no language specified", async
     { type: "npm_registry", host: "npm.pkg.github.com", token: "abc" },
     { type: "maven_repository", host: "maven.pkg.github.com", token: "def" },
     { type: "nuget_feed", host: "nuget.pkg.github.com", token: "ghi" },
+    { type: "goproxy_server", host: "goproxy.example.com", token: "jkl" },
   ];
-  const credentialsInput = Buffer.from(
-    JSON.stringify(mixedCredentials),
-  ).toString("base64");
+  const credentialsInput = toEncodedJSON(mixedCredentials);
 
   const credentials = startProxyExports.getCredentials(
     getRunnerLogger(true),
@@ -124,7 +124,7 @@ test("getCredentials returns all credentials when no language specified", async
     credentialsInput,
     undefined,
   );
-  t.is(credentials.length, 3);
+  t.is(credentials.length, mixedCredentials.length);
 });
 
 test("getCredentials throws an error when non-printable characters are used", async (t) => {