fix: tolerate an undefined baseUrl compiler option (#208)

* fix: tolerate an undefined `baseUrl` compiler option

* chore: clean up changelog

* chore: update changelog

Co-authored-by: Jonas Kello <jonaskello@users.noreply.github.com>

Author: aleclarson

CHANGELOG.md

@@ -7,19 +7,19 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
-### Added
-
-- Add `cwd` option to `register` function that overrides where the `tsconfig.json` search begins. See PR [#205](https://github.com/dividab/tsconfig-paths/pull/205).
-- Add support for `jsconfig.json`. See PR [#199](https://github.com/dividab/tsconfig-paths/pull/199). Thanks to [@F3n67u](https://github.com/F3n67u) for this PR!
-- Let `paths` mappings be absolute paths. See PR [#184](https://github.com/dividab/tsconfig-paths/pull/184).
-
 ### Changed
 
 - Ignore `--project`/`-P` CLI flag when explicit options are passed to `register`. See PR [#206](https://github.com/dividab/tsconfig-paths/pull/206).
 
 ### Added
 
 - Add `cwd` option to `register` function that overrides where the `tsconfig.json` search begins. See PR [#205](https://github.com/dividab/tsconfig-paths/pull/205).
+- Add support for `jsconfig.json`. See PR [#199](https://github.com/dividab/tsconfig-paths/pull/199). Thanks to [@F3n67u](https://github.com/F3n67u) for this PR!
+- Let `paths` mappings be absolute paths. See PR [#184](https://github.com/dividab/tsconfig-paths/pull/184).
+
+### Fixed
+
+- Tolerate an undefined `baseUrl` compiler option. See PR [#208](https://github.com/dividab/tsconfig-paths/pull/208).
 
 ## [3.14.1] - 2022-03-22
 

src/config-loader.ts

@@ -21,7 +21,7 @@ export interface ConfigLoaderParams {
 export interface ConfigLoaderSuccessResult {
   resultType: "success";
   configFileAbsolutePath: string;
-  baseUrl: string;
+  baseUrl?: string;
   absoluteBaseUrl: string;
   paths: { [key: string]: Array<string> };
   mainFields?: Array<string>;
@@ -75,21 +75,15 @@ export function configLoader({
     };
   }
 
-  if (!loadResult.baseUrl) {
-    return {
-      resultType: "failed",
-      message: "Missing baseUrl in compilerOptions",
-    };
-  }
-
-  const tsConfigDir = path.dirname(loadResult.tsConfigPath);
-  const absoluteBaseUrl = path.join(tsConfigDir, loadResult.baseUrl);
-
   return {
     resultType: "success",
     configFileAbsolutePath: loadResult.tsConfigPath,
     baseUrl: loadResult.baseUrl,
-    absoluteBaseUrl,
+    absoluteBaseUrl: path.join(
+      path.dirname(loadResult.tsConfigPath),
+      loadResult.baseUrl || ""
+    ),
     paths: loadResult.paths || {},
+    addMatchAll: loadResult.baseUrl !== undefined,
   };
 }