diff --git a/api/api-npm/index.d.ts b/api/api-npm/index.d.ts
index 10346ace..5612af80 100644
--- a/api/api-npm/index.d.ts
+++ b/api/api-npm/index.d.ts
@@ -1,11 +1,11 @@
 import { ServiceDef, FunctionCallDef } from "@fluencelabs/interfaces";
 
-class AquaFunction {
+export class AquaFunction {
   funcDef: FunctionCallDef;
   script: string;
 }
 
-class GeneratedSource {
+export class GeneratedSource {
   name: string;
   tsSource?: string;
   jsSource?: string;
@@ -43,20 +43,26 @@ type CodeString = {
   code: string;
 };
 
+export type CompileFromStringArgs = CommonArgs & CodeString;
+export type CompileFromStringReturnType = Omit<CompilationResult, "funcCall">;
+
 /** Compile aqua code from a string */
 export declare function compileFromString(
-  args: CommonArgs & CodeString,
-): Promise<Omit<CompilationResult, "funcCall">>;
+  args: CompileFromStringArgs,
+): Promise<CompileFromStringReturnType>;
 
 type FilePath = {
   /** Path to the aqua file to be compiled */
   filePath: string;
 };
 
+export type CompileFromPathArgs = CommonArgs & FilePath;
+export type CompileFromPathReturnType = Omit<CompilationResult, "funcCall">;
+
 /** Compile aqua code from a file */
 export declare function compileFromPath(
-  args: CommonArgs & FilePath,
-): Promise<Omit<CompilationResult, "funcCall">>;
+  args: CompileFromPathArgs,
+): Promise<CompileFromPathReturnType>;
 
 type FuncCall = {
   /** Function call you want to compile. Example: someFunc("someArg") */
@@ -65,14 +71,20 @@ type FuncCall = {
   data?: Record<string, unknown> | undefined;
 };
 
+export type CompileFuncCallFromStringArgs = CommonArgs & CodeString & FuncCall;
+export type CompileFuncCallFromStringReturnType = Required<CompilationResult>;
+
 /** Compile aqua function call from a string */
 export declare function compileAquaCallFromString(
-  args: CommonArgs & CodeString & FuncCall,
-): Promise<Required<CompilationResult>>;
+  args: CompileFuncCallFromStringArgs,
+): Promise<CompileFuncCallFromStringReturnType>;
+
+export type CompileFuncCallFromPathArgs = CommonArgs & FilePath & FuncCall;
+export type CompileFuncCallFromPathReturnType = Required<CompilationResult>;
 
 /** Compile aqua function call from a file */
 export declare function compileAquaCallFromPath(
-  args: CommonArgs & FilePath & FuncCall,
-): Promise<Required<CompilationResult>>;
+  args: CompileFuncCallFromPathArgs,
+): Promise<CompileFuncCallFromPathReturnType>;
 
 export {};