Warning messages using parcel bundler

This is an output of parcel bundler when running the embedded web server ("parcel ./entrypoint/index.html"). I think this warnings are related to this project and not from parcel itself, but let me know if I'm wrong...

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⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-client/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link-http/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link-error/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-client/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link-http/lib/index.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link-error/lib/index.js".
⚠️  Could not load source file "../src/ApolloClient.ts" in source map of "../node_modules/apollo-client/ApolloClient.js".
⚠️  Could not load source file "../../src/errors/ApolloError.ts" in source map of "../node_modules/apollo-client/errors/ApolloError.js".
⚠️  Could not load existing sourcemap of "../node_modules/iview/dist/iview.js".
⚠️  Could not load source file "../src/link.ts" in source map of "../node_modules/apollo-link/lib/link.js".
⚠️  Could not load source file "../src/linkUtils.ts" in source map of "../node_modules/apollo-link/lib/linkUtils.js".
⚠️  Could not load source file "../../src/core/networkStatus.ts" in source map of "../node_modules/apollo-client/core/networkStatus.js".
⚠️  Could not load source file "../../src/core/ObservableQuery.ts" in source map of "../node_modules/apollo-client/core/ObservableQuery.js".
⚠️  Could not load source file "../src/inMemoryCache.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/inMemoryCache.js".
⚠️  Could not load source file "../src/readFromStore.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/readFromStore.js".
⚠️  Could not load source file "../src/writeToStore.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/writeToStore.js".
⚠️  Could not load source file "../src/httpLink.ts" in source map of "../node_modules/apollo-link-http/lib/httpLink.js".
⚠️  Could not load source file "../src/fragmentMatcher.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/fragmentMatcher.js".
⚠️  Could not load source file "../src/objectCache.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/objectCache.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/zen-observable-ts/lib/index.js".
⚠️  Could not load existing sourcemap of "../node_modules/iview/dist/iview.js".
⚠️  Could not load source file "../../src/core/types.ts" in source map of "../node_modules/apollo-client/core/types.js".
⚠️  Could not load source file "../../src/util/Observable.ts" in source map of "../node_modules/apollo-client/util/Observable.js".
⚠️  Could not load source file "../src/depTrackingCache.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/depTrackingCache.js".
⚠️  Could not load source file "../src/cacheKeys.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/cacheKeys.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link-http-common/lib/index.js".
⚠️  Could not load source file "../src/zenObservable.ts" in source map of "../node_modules/zen-observable-ts/lib/zenObservable.js".
⚠️  Could not load source file "../../src/core/QueryManager.ts" in source map of "../node_modules/apollo-client/core/QueryManager.js".
⚠️  Could not load source file "../src/fixPolyfills.ts" in source map of "../node_modules/apollo-cache-inmemory/lib/fixPolyfills.js".
⚠️  Could not load source file "../../src/data/store.ts" in source map of "../node_modules/apollo-client/data/store.js".
⚠️  Could not load source file "../../src/data/queries.ts" in source map of "../node_modules/apollo-client/data/queries.js".
⚠️  Could not load source file "../../src/scheduler/scheduler.ts" in source map of "../node_modules/apollo-client/scheduler/scheduler.js".
⚠️  Could not load source file "../../src/data/mutations.ts" in source map of "../node_modules/apollo-client/data/mutations.js".
⚠️  Could not load source file "../src/index.ts" in source map of "../node_modules/apollo-link-dedup/lib/index.js".
⚠️  Could not load source file "../src/dedupLink.ts" in source map of "../node_modules/apollo-link-dedup/lib/dedupLink.js".