fix assertion

package.json

@@ -1,6 +1,6 @@
 {
   "name": "env0-ts-transform-json-schema",
-  "version": "2.0.15",
+  "version": "2.0.16",
   "description": "Generate inline JSON schema from TypeScript types",
   "files": [
     "lib",

src/transform.ts

@@ -26,9 +26,6 @@ export const getTransformer = (program: ts.Program) => {
     if (!generator) {
         const tsconfig = program.getCompilerOptions().configFilePath as string;
         const projectApi = tsconfig.replace('tsconfig.json', 'api.d.ts');
-        const hasApiFile = program.getSourceFiles().map(f => f.fileName).includes(projectApi);
-
-        if (!hasApiFile) throw 'Project must have an api.d.ts file that includes the type'
 
         config = {
             path: projectApi,
@@ -70,6 +67,9 @@ export const getTransformer = (program: ts.Program) => {
                         throw new Error(`Could not find symbol for passed type`);
                     }
 
+                    const hasApiFile = program.getSourceFiles().map(f => f.fileName).includes(config.path);
+                    if (!hasApiFile) throw 'Project must have an api.d.ts file that includes the type'
+
                     // @ts-ignore typeName exists in real but not on the type
                     const namespacedTypeName = getFullyQualifiedTypeName(typeArgument.typeName);