diff --git a/.changeset/three-rockets-jump.md b/.changeset/three-rockets-jump.md
new file mode 100644
index 000000000..fdd71a638
--- /dev/null
+++ b/.changeset/three-rockets-jump.md
@@ -0,0 +1,5 @@
+---
+"@fake-scope/fake-pkg": patch
+---
+
+fix: add default tsconfig.baseUrl to align with tsc behavior
diff --git a/packages/register/read-default-tsconfig.ts b/packages/register/read-default-tsconfig.ts
index 44e072c59..ed30165e1 100644
--- a/packages/register/read-default-tsconfig.ts
+++ b/packages/register/read-default-tsconfig.ts
@@ -34,6 +34,12 @@ export function readDefaultTsConfig(
     const { config } = ts.readConfigFile(fullTsConfigPath, ts.sys.readFile)
 
     const { options, errors, fileNames } = ts.parseJsonConfigFileContent(config, ts.sys, dirname(fullTsConfigPath))
+
+    // if baseUrl not set, use dirname of tsconfig.json. align with ts https://www.typescriptlang.org/tsconfig#paths
+    if (options.paths && !options.baseUrl) {
+      options.baseUrl = dirname(fullTsConfigPath)
+    }
+
     if (!errors.length) {
       compilerOptions = options
       compilerOptions.files = fileNames