fix: Fixes broken windows tests (#607)

Author: tgriesser

src/typegenPrinter.ts

@@ -177,21 +177,23 @@ export class TypegenPrinter {
           )
         }
 
-        if (isNodeModule(rootTypePath)) {
+        if (path.isAbsolute(rootTypePath)) {
+          if (!fs.existsSync(rootTypePath)) {
+            throw new Error(`Root typing path ${rootTypePath} for the type ${typeName} does not exist`)
+          }
+        } else {
           try {
             require.resolve(rootTypePath)
           } catch (e) {
             throw new Error(`Module ${rootTypePath} for the type ${typeName} does not exist`)
           }
-        } else if (!fs.existsSync(rootTypePath)) {
-          throw new Error(`Root typing path ${rootTypePath} for the type ${typeName} does not exist`)
         }
 
-        const importPath = isNodeModule(rootTypePath)
-          ? rootTypePath
-          : relativePathTo(rootTypePath, outputPath)
+        const importPath = path.isAbsolute(rootTypePath)
+          ? relativePathTo(rootTypePath, outputPath)
               .replace(/(\.d)?\.ts/, '')
               .replace(/\\+/g, '/')
+          : rootTypePath
 
         importMap[importPath] = importMap[importPath] || new Set()
         importMap[importPath].add(rootType.alias ? `${rootType.name} as ${rootType.alias}` : rootType.name)