An open-source cross-platform alternative to AirDrop
This report summarizes scanner evidence for localsend/localsend, a Dart project with 96,791 GitHub stars. SynthScan examined 223,285 lines of code across 759 source files, recording 119 pattern matches distributed across 4 syntactic categories. The legacy adjusted pattern signal is 0.6 (Low pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.
Can maintainers explain intent, assumptions, and trade-offs? 118 finding(s).
Are imports declared and package/API names verified? 0 finding(s).
Are wrappers, guards, and repeated structures necessary? 1 finding(s).
Which changes need focused human review? 119 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 119 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | app/test/mocks.mocks.dart | 21 | import 'package:shared_preferences/shared_preferences.dart' as _i15; | COMMENT |
| LOW | app/linux/flutter/generated_plugin_registrant.h | 1 | // | COMMENT |
| LOW | app/lib/provider/network/webrtc/webrtc_receiver.dart | 141 | class _InitSessionState extends ReduxAction<WebRTCReceiveService, WebRTCReceiveState> { | COMMENT |
| LOW | app/lib/provider/network/webrtc/webrtc_receiver.dart | 161 | // desiredName: null, | COMMENT |
| LOW | app/lib/gen/strings_en.g.dart | 1 | /// | COMMENT |
| LOW | app/lib/gen/strings.g.dart | 941 | ); | COMMENT |
| LOW | app/lib/gen/strings.g.dart | 961 | /// All widgets using this method will trigger a rebuild when locale changes. | COMMENT |
| LOW | app/lib/model/state/settings_state.mapper.dart | 181 | #alias: _f$alias, | COMMENT |
| LOW | …b/model/state/server/receive_session_state.mapper.dart | 81 | #sessionId: _f$sessionId, | COMMENT |
| LOW | app/lib/model/state/send/send_session_state.mapper.dart | 81 | final MappableFields<SendSessionState> fields = const { | COMMENT |
| LOW | app/lib/pages/tabs/settings_tab_vm.mapper.dart | 181 | mode: FieldMode.member, | COMMENT |
| LOW | app/windows/runner/utils.h | 1 | #ifndef RUNNER_UTILS_H_ | COMMENT |
| LOW | app/windows/runner/win32_window.cpp | 1 | #include "win32_window.h" | COMMENT |
| LOW | app/windows/runner/resource.h | 1 | //{{NO_DEPENDENCIES}} | COMMENT |
| LOW | app/windows/runner/winrt_ext.cpp | 1 | #include "winrt_ext.h" | COMMENT |
| LOW | app/windows/flutter/generated_plugin_registrant.h | 1 | // | COMMENT |
| LOW | cli/src/picker.rs | 21 | /// (or descends into the highlighted directory), Esc clears the filter or | COMMENT |
| LOW | support/scripts/compile_android_apk.sh | 1 | # This apk script is written in a way to conform with "Reproducible Builds" by F-Droid | COMMENT |
| LOW | packages/core/src/crypto/cert.rs | 21 | /// Generates a new device identity, used for both the HTTP server and client | COMMENT |
| LOW | packages/core/src/util/filename.rs | 21 | COMMENT | |
| LOW | packages/core/src/discovery/store.rs | 41 | /// A [`DiscoveredDevice`] as kept in the store. | COMMENT |
| LOW | packages/core/src/discovery/mod.rs | 21 | use tokio::sync::{mpsc, oneshot}; | COMMENT |
| LOW | packages/core/src/discovery/mod.rs | 81 | /// [`StatefulDevice::logs`]; the accumulated state is read from | COMMENT |
| LOW | packages/core/src/discovery/mod.rs | 221 | impl DiscoveryHandle { | COMMENT |
| LOW | packages/core/src/discovery/mod.rs | 241 | /// Discovery then neither hears nor sends announcements; it still learns | COMMENT |
| LOW | packages/core/src/discovery/mod.rs | 381 | /// Sets whether announcements of other devices are answered with a | COMMENT |
| LOW | packages/core/src/http/dto_v2.rs | 81 | /// Whether the download API (sections 5.2, 5.3) is active. | COMMENT |
| LOW | packages/core/src/http/dto_v2.rs | 121 | /// Used when the sender provides files for others to download. | COMMENT |
| LOW | packages/core/src/http/server/web.rs | 21 | use tokio_stream::StreamExt; | COMMENT |
| LOW | packages/core/src/http/server/web.rs | 41 | COMMENT | |
| LOW | packages/core/src/http/server/web.rs | 101 | #[derive(Default)] | COMMENT |
| LOW | packages/core/src/http/server/web.rs | 121 | /// asset embedded at compile time, so applications only provide the pages | COMMENT |
| LOW | packages/core/src/http/server/mod.rs | 141 | /// The task running the accept loops. Completes after a stop has been | COMMENT |
| LOW | packages/core/src/http/server/mod.rs | 181 | } | COMMENT |
| LOW | packages/core/src/http/server/v2.rs | 41 | COMMENT | |
| LOW | packages/core/src/http/server/v2.rs | 101 | /// The `decision_tx` of the [ServerEventV2::PrepareUpload] with the same | COMMENT |
| LOW | packages/core/src/http/server/v2.rs | 161 | // On TLS, only trust registrations whose claimed fingerprint is proven | COMMENT |
| LOW | packages/core/src/http/server/common/save.rs | 21 | /// | COMMENT |
| LOW | packages/core/src/http/server/common/save.rs | 41 | /// | COMMENT |
| LOW | packages/core/src/http/server/common/save.rs | 61 | /// the descriptor, which also covers SAF documents that have no path. | COMMENT |
| LOW | packages/core/src/http/server/common/save.rs | 321 | // Drops content beyond the file that was just written, in case the target | COMMENT |
| LOW | packages/core/src/http/client/scoped_host.rs | 1 | //! Support for connecting to scoped IPv6 addresses (`fe80::1%3`). | COMMENT |
| LOW | packages/core/src/http/client/server_cert_verifier.rs | 41 | reason, | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 21 | /// # Arguments | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 61 | COMMENT | |
| LOW | packages/core/src/http/client/v2.rs | 121 | /// | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 201 | COMMENT | |
| LOW | packages/core/src/http/client/v2.rs | 221 | /// * `session_id` - Session ID from prepare_upload | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 301 | self.client.post(&url).send().await?; | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 341 | let body = res.json::<InfoResponseDtoV2>().await?; | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 401 | Ok(body) | COMMENT |
| LOW | packages/core/src/http/client/v2.rs | 441 | } | COMMENT |
| LOW | packages/core/src/model/discovery.rs | 101 | /// Multicast announcement message for UDP discovery (v2.2). | COMMENT |
| LOW | packages/core/src/model/transfer.rs | 21 | pub type FileStream = Pin<Box<dyn Stream<Item = Result<Bytes, std::io::Error>> + Send + Sync>>; | COMMENT |
| LOW | packages/core/src/model/transfer.rs | 41 | COMMENT | |
| LOW | packages/core/src/webrtc/webrtc.rs | 41 | /// HASH_METHOD.HASH.SIGN_METHOD.SIGN | COMMENT |
| LOW | …s/localsend_isolates/test/util/show_instance_test.dart | 1 | // Regression test for https://github.com/localsend/localsend/issues/3165 | COMMENT |
| LOW | …olates/test/task/server/cancel_session_repro_test.dart | 1 | // Regression test: the receiver cancels the session mid-transfer (the sender | COMMENT |
| LOW | packages/localsend_isolates/rust/src/api/discovery.rs | 141 | /// answering announcements forever (the `SO_REUSEPORT` sockets do not even | COMMENT |
| LOW | packages/localsend_isolates/rust/src/api/discovery.rs | 241 | /// discovery is stopped. Can only be listened to once. | COMMENT |
| 55 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | app/lib/gen/strings.g.dart | 964 | /// Step 1: | COMMENT |
| LOW | app/lib/gen/strings.g.dart | 970 | /// Step 2: | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | …rust_builder/cargokit/build_tool/analysis_options.yaml | 12 | # If you want a smaller set of lints you can change this to specify | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | app/macos/ShareExtension/Utilities.swift | 108 | print("Error opening the application: \(error.localizedDescription)") | CODE |