feat: export createFromMapFiles SourceMapper utility

Author: VladimirMilenko

ts/src/index.ts

@@ -21,7 +21,7 @@ import * as timeProfiler from './time-profiler';
 export {AllocationProfileNode, TimeProfileNode, ProfileNode} from './v8-types';
 
 export {encode, encodeSync} from './profile-encoder';
-export {SourceMapper} from './sourcemapper/sourcemapper';
+export {SourceMapper, createFromMapFiles} from './sourcemapper/sourcemapper';
 
 export const time = {
   profile: timeProfiler.profile,

ts/src/sourcemapper/sourcemapper.ts

@@ -222,7 +222,7 @@ export class SourceMapper {
   }
 }
 
-async function createFromMapFiles(mapFiles: string[]): Promise<SourceMapper> {
+export async function createFromMapFiles(mapFiles: string[]): Promise<SourceMapper> {
   const limit = pLimit(CONCURRENCY);
   const mapper = new SourceMapper();
   const promises: Array<Promise<void>> = mapFiles.map(mapPath =>