Blazing fast, structured, leveled logging in Go.
This report summarizes scanner evidence for uber-go/zap, a Go project with 24,664 GitHub stars. SynthScan examined 25,905 lines of code across 159 source files, recording 198 pattern matches distributed across 2 syntactic categories. The legacy adjusted pattern signal is 7.6 (Moderate 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.
Can maintainers explain intent, assumptions, and trade-offs? 196 finding(s).
Are imports declared and package/API names verified? 2 finding(s).
Are wrappers, guards, and repeated structures necessary? 0 finding(s).
Which changes need focused human review? 198 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 198 distinct pattern matches across 2 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 | sink.go | 1 | // Copyright (c) 2016-2022 Uber Technologies, Inc. | COMMENT |
| LOW | global.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | config.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | config.go | 41 | Thereafter int `json:"thereafter" yaml:"thereafter"` | COMMENT |
| LOW | config.go | 61 | // level of all loggers descended from this config. | COMMENT |
| LOW | config.go | 81 | EncoderConfig zapcore.EncoderConfig `json:"encoderConfig" yaml:"encoderConfig"` | COMMENT |
| LOW | config.go | 101 | // | COMMENT |
| LOW | config.go | 141 | // NewProductionConfig builds a reasonable default production logging | COMMENT |
| LOW | config.go | 181 | // - The message passed to the log statement. | COMMENT |
| LOW | error.go | 1 | // Copyright (c) 2017 Uber Technologies, Inc. | COMMENT |
| LOW | example_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | example_test.go | 61 | ) | COMMENT |
| LOW | flag.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | increase_level_test.go | 1 | // Copyright (c) 2020 Uber Technologies, Inc. | COMMENT |
| LOW | options.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | options.go | 161 | // WithFatalHook sets a CheckWriteHook to run on fatal logs. | COMMENT |
| LOW | writer_test.go | 1 | // Copyright (c) 2016-2022 Uber Technologies, Inc. | COMMENT |
| LOW | field.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | field.go | 41 | // Skip constructs a no-op field, which is often useful when handling invalid | COMMENT |
| LOW | field.go | 321 | // any object into the logging context, but it's relatively slow and | COMMENT |
| LOW | field.go | 441 | return dictObject(val) | COMMENT |
| LOW | field.go | 461 | // and then call a function on it. | COMMENT |
| LOW | time.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | encoder.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | sink_windows_test.go | 1 | // Copyright (c) 2022 Uber Technologies, Inc. | COMMENT |
| LOW | logger.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | logger.go | 181 | if len(fields) == 0 { | COMMENT |
| LOW | logger_bench_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | sugar_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | common_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | writer.go | 1 | // Copyright (c) 2016-2022 Uber Technologies, Inc. | COMMENT |
| LOW | flag_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | level_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | doc.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | doc.go | 21 | // Package zap provides fast, structured, leveled logging. | COMMENT |
| LOW | doc.go | 41 | // variadic number of key-value pairs. (For more advanced use cases, they also | COMMENT |
| LOW | doc.go | 61 | // | COMMENT |
| LOW | doc.go | 81 | // The simplest way to build a Logger is to use zap's opinionated presets: | COMMENT |
| LOW | doc.go | 101 | // # Extending Zap | COMMENT |
| LOW | level.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | level.go | 41 | ErrorLevel = zapcore.ErrorLevel | COMMENT |
| LOW | level.go | 61 | COMMENT | |
| LOW | http_handler_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | sink_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | leak_test.go | 1 | // Copyright (c) 2021 Uber Technologies, Inc. | COMMENT |
| LOW | http_handler.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | http_handler.go | 41 | // {"level":"info"} | COMMENT |
| LOW | http_handler.go | 61 | // curl -X PUT localhost:8080/log/level?level=debug | COMMENT |
| LOW | global_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | sugar.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | sugar.go | 41 | // Unlike the Logger, the SugaredLogger doesn't insist on structured logging. | COMMENT |
| LOW | sugar.go | 81 | return &SugaredLogger{base: base} | COMMENT |
| LOW | sugar.go | 101 | // unsugared.With( | COMMENT |
| LOW | sugar.go | 121 | // Until that occurs, the logger may retain references to objects inside the fields, | COMMENT |
| LOW | encoder_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | stacktrace_ext_test.go | 1 | // Copyright (c) 2016, 2017 Uber Technologies, Inc. | COMMENT |
| LOW | error_test.go | 1 | // Copyright (c) 2017 Uber Technologies, Inc. | COMMENT |
| LOW | config_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | time_test.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| LOW | array.go | 1 | // Copyright (c) 2016 Uber Technologies, Inc. | COMMENT |
| 136 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | logger_bench_test.go | 49 | Name: "Jane Doe", | CODE |
| LOW | benchmarks/zap_test.go | 53 | Name: "Jane Doe", | CODE |