From 4da7a9aa29be6d3d6488fdfac6e390455ee10c39 Mon Sep 17 00:00:00 2001
From: Tim van der Meij <timvandermeij@gmail.com>
Date: Sun, 10 May 2026 18:34:23 +0200
Subject: [PATCH] Upgrade `typescript` to version 6.0.3

This is a major version bump containing two breaking changes for us:

- the `baseUrl` option is removed;
- the `moduleResolution` option doesn't support `node10` (or the `node`
  alias) anymore.

The migration guide at https://github.com/microsoft/TypeScript/issues/62508
indicates that we can remove `baseUrl` and change `moduleResolution` to
`bundler` (the latter is consistent with what other projects do that are
linked to the issue, and more details on that configuration option can
be found at https://www.typescriptlang.org/tsconfig/#moduleResolution).

Note that this is enough to get `npx gulp typestest` green and that is
all validation we can do on our side, so as usual if any follow-up fixes
for types are necessary we rely on the community to provide patches and
extend the types test where possible to improve validation.
---
 package-lock.json        | 8 ++++----
 package.json             | 2 +-
 test/types/tsconfig.json | 3 +--
 tsconfig.json            | 2 +-
 4 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index bb89d2297..e407bbf56 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -62,7 +62,7 @@
         "terser-webpack-plugin": "^5.6.0",
         "tsc-alias": "^1.8.17",
         "ttest": "^4.0.0",
-        "typescript": "^5.9.3",
+        "typescript": "^6.0.3",
         "vinyl": "^3.0.1",
         "webpack": "^5.106.2",
         "webpack-stream": "^7.0.0"
@@ -11849,9 +11849,9 @@
       "license": "MIT"
     },
     "node_modules/typescript": {
-      "version": "5.9.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
-      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.3.tgz",
+      "integrity": "sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index e78b5d10d..0424149a4 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "terser-webpack-plugin": "^5.6.0",
     "tsc-alias": "^1.8.17",
     "ttest": "^4.0.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "vinyl": "^3.0.1",
     "webpack": "^5.106.2",
     "webpack-stream": "^7.0.0"
diff --git a/test/types/tsconfig.json b/test/types/tsconfig.json
index 5cd8ef450..5a8cef756 100644
--- a/test/types/tsconfig.json
+++ b/test/types/tsconfig.json
@@ -3,12 +3,11 @@
     "outDir": "../../build/tmp",
     "sourceMap": true,
     "declaration": false,
-    "moduleResolution": "node10",
+    "moduleResolution": "bundler",
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
     "target": "ESNext",
     "module": "ESNext",
-    "baseUrl": "./",
     "strict": true,
     "types": [],
     "lib": ["ESNext", "DOM"],
diff --git a/tsconfig.json b/tsconfig.json
index 0e31e918c..ad957e5a2 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,7 +7,7 @@
     "emitDeclarationOnly": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "paths": {
       "pdfjs-lib": ["./src/pdf"],
       "display-binary_data_factory": ["./src/display/binary_data_factory"],