Super-fast/easy runtime validators and serializers via transformation
This report summarizes scanner evidence for samchon/typia, a TypeScript project with 5,960 GitHub stars. SynthScan examined 310,543 lines of code across 3262 source files, recording 709 pattern matches distributed across 8 syntactic categories. The legacy adjusted pattern signal is 2.7 (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? 691 finding(s).
Are imports declared and package/API names verified? 18 finding(s).
Are wrappers, guards, and repeated structures necessary? 10 finding(s).
Which changes need focused human review? 709 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 709 distinct pattern matches across 8 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 | benchmark/tsconfig.json | 21 | "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source | COMMENT |
| LOW | benchmark/tsconfig.json | 41 | // "noResolve": true, /* Disallow `import`s, `require`s or `<reference>`s from expand | COMMENT |
| LOW | benchmark/tsconfig.json | 61 | // "mapRoot": "", /* Specify the location where debugger should locate map files | COMMENT |
| LOW | benchmark/tsconfig.json | 81 | "strict": true, /* Enable all strict type-checking options. */ | COMMENT |
| LOW | …ark/src/structures/pure/ArrayRecursiveUnionExplicit.ts | 141 | // SEQUENCE OF GENERATED BUCKETS | COMMENT |
| LOW | config/tsconfig.json | 21 | // "experimentalDecorators": true, /* Enable experimental support for legacy experimental decorato | COMMENT |
| LOW | config/tsconfig.json | 41 | // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */ | COMMENT |
| LOW | config/tsconfig.json | 61 | // "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */ | COMMENT |
| LOW | config/tsconfig.json | 81 | /* Interop Constraints */ | COMMENT |
| LOW | experiments/declaration/pnpm-workspace.yaml | 1 | # pnpm reads `overrides` from here since pnpm 10. The two packages below are | COMMENT |
| LOW | website/next-env.d.ts | 1 | /// <reference types="next" /> | COMMENT |
| LOW | website/compiler/cmd/playground/main_wasm.go | 1 | //go:build js && wasm | COMMENT |
| LOW | …ound/typia_transform_options_come_from_payload_test.go | 1 | package main | COMMENT |
| LOW | …ayground/typia_build_options_come_from_payload_test.go | 1 | package main | COMMENT |
| LOW | website/compiler/cmd/playground/typia_plugin.go | 1 | // typia plugin wiring for the website's playground wasm. | COMMENT |
| LOW | website/src/compiler/index.ts | 1 | // Playground compiler worker. | COMMENT |
| LOW | …st_llm_json_parse_lenient_number_format_nonstandard.ts | 101 | r8.errors, | COMMENT |
| LOW | tests/config/tsconfig.json | 21 | "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source | COMMENT |
| LOW | tests/config/tsconfig.json | 41 | // "paths": { | COMMENT |
| LOW | tests/config/tsconfig.json | 61 | // "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript | COMMENT |
| LOW | tests/config/tsconfig.json | 81 | // "isolatedModules": true, /* Ensure that each file can be safely transpiled without relyi | COMMENT |
| LOW | …template/src/structures/ArrayRecursiveUnionImplicit.ts | 141 | //---- | COMMENT |
| LOW | tests/test-error/src/tag/error_tag_format_duplicated.ts | 1 | import typia, { tags } from "typia"; | COMMENT |
| LOW | …ypia-schema/src/features/tags/test_type_int64_range.ts | 201 | BigInt.asIntN(64, value), | COMMENT |
| LOW | …ypia-schema/src/features/tags/test_type_int64_range.ts | 261 | COMMENT | |
| LOW | …pia-schema/src/features/tags/test_type_uint64_range.ts | 201 | // is `__encode(__assert(input))`, so asserting `typia.is` is false beside a | COMMENT |
| LOW | …pia-schema/src/features/tags/test_type_uint64_range.ts | 261 | // Nothing else here would be an oracle. `BigUint64Array` wraps on store, so | COMMENT |
| LOW | examples/tsconfig.json | 21 | "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source | COMMENT |
| LOW | examples/tsconfig.json | 41 | COMMENT | |
| LOW | examples/tsconfig.json | 61 | // "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */ | COMMENT |
| LOW | examples/tsconfig.json | 81 | // "noImplicitAny": true, /* Enable error reporting for expressions and declarations with | COMMENT |
| LOW | packages/interface/src/typings/Classifiable.ts | 201 | COMMENT | |
| LOW | packages/interface/src/typings/Classifiable.ts | 261 | | [ClassifiableMain<K>, ClassifiableMain<V>][] | COMMENT |
| LOW | …tils/src/validators/internal/OpenApiObjectValidator.ts | 81 | : `[${JSON.stringify(key)}]`), | COMMENT |
| LOW | packages/mcp/src/internal/McpControllerRegistrar.ts | 61 | // schema. A `strict` application carries its constraints as | COMMENT |
| LOW | …typia/llm_evaluation_rejects_undecidable_types_test.go | 1 | package main | COMMENT |
| LOW | …/cmd/ttsc-typia/plugin_options_payload_helpers_test.go | 21 | base string | COMMENT |
| LOW | …_dependencies_type_parameter_default_transform_test.go | 1 | package main | COMMENT |
| LOW | …_dependencies_type_parameter_default_transform_test.go | 21 | // 1. Build a project where `a.ts` validates `Wrapper` from `wrapper.ts`, whose | COMMENT |
| LOW | …typia/plain_classify_self_ref_private_rejected_test.go | 1 | package main | COMMENT |
| LOW | …ct_dependencies_inferred_declaration_transform_test.go | 21 | // type, an overload's selection, a contextually typed parameter -- which is | COMMENT |
| LOW | …/project_dependencies_default_barrel_transform_test.go | 1 | package main | COMMENT |
| LOW | …/project_dependencies_default_barrel_transform_test.go | 21 | // `barrel.ts`, which forwards `default` from `real.ts` while separately | COMMENT |
| LOW | …transform_project_diagnostics_preserve_details_test.go | 1 | package main | COMMENT |
| LOW | packages/typia/native/cmd/ttsc-typia/main_wasm.go | 61 | "date": date, | COMMENT |
| LOW | …d/ttsc-typia/non_trailing_rest_tuple_transform_test.go | 1 | package main | COMMENT |
| LOW | …_dependencies_complete_inferred_type_transform_test.go | 21 | // Declaring such a file complete would drop the reference closure that is the | COMMENT |
| LOW | …c-typia/build_plugin_options_come_from_payload_test.go | 1 | package main | COMMENT |
| LOW | …lm_evaluation_rejects_conflicting_boolean_tags_test.go | 1 | package main | COMMENT |
| LOW | …project_dependencies_custom_lib_name_transform_test.go | 21 | // | COMMENT |
| LOW | …c-typia/llm_evaluation_plan_emission_transform_test.go | 1 | package main | COMMENT |
| LOW | …sc-typia/random_recursive_min_items_diagnostic_test.go | 1 | package main | COMMENT |
| LOW | …/ttsc-typia/native_name_collision_is_transform_test.go | 1 | package main | COMMENT |
| LOW | …/cmd/ttsc-typia/notation_unicode_key_transform_test.go | 1 | package main | COMMENT |
| LOW | …object_union_explicit_pointer_schema_transform_test.go | 1 | package main | COMMENT |
| LOW | …pia/json_is_stringify_scoped_checker_transform_test.go | 1 | package main | COMMENT |
| LOW | …c-typia/shallow_depth_argument_error_transform_test.go | 1 | package main | COMMENT |
| LOW | …ypia/native_named_intersection_union_transform_test.go | 1 | package main | COMMENT |
| LOW | …/ttsc-typia/bigint_literal_precision_transform_test.go | 1 | package main | COMMENT |
| LOW | …d/ttsc-typia/private_field_filter_is_transform_test.go | 1 | package main | COMMENT |
| 577 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | tests/test-utils/examples/v2.0/semanticscholar.json | 1 | {"swagger":"2.0","basePath":"/graph/v1","paths":{"/author/batch":{"parameters":[{"in":"query","description":"A comma-sep | CODE |
| MEDIUM⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| MEDIUM⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| MEDIUM⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| LOW | tests/test-utils/examples/v3.1/shopping.json | 1 | {"openapi":"3.1.0","servers":[{"url":"http://localhost:37001","description":"Local Server"}],"info":{"version":"0.11.0", | CODE |
| MEDIUM | …rc/features/test_vercel_class_controller_validation.ts | 25 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …l/src/features/test_vercel_structured_output_coerce.ts | 18 | * @evidence contracts/e2e.md#necessary-boundary The native-produced harness must connect authored integer/fractional fi | COMMENT |
| MEDIUM | …l/src/features/test_vercel_structured_output_coerce.ts | 20 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …features/test_vercel_single_controller_lazy_execute.ts | 27 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …src/features/test_vercel_class_controller_no_prefix.ts | 27 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …features/test_vercel_generate_text_validation_error.ts | 28 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …tures/test_vercel_json_pointer_reference_validation.ts | 21 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …cel/src/features/test_vercel_tool_omitted_arguments.ts | 26 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …c/features/test_vercel_generate_text_multiple_tools.ts | 27 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …c/features/test_vercel_tool_error_single_json_fence.ts | 30 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …eatures/test_vercel_class_controller_error_handling.ts | 25 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …est-vercel/src/features/test_vercel_generate_object.ts | 21 | * @evidence contracts/e2e.md#necessary-boundary Real SDK generateObject parses the injected provider JSON through a nat | COMMENT |
| MEDIUM | …est-vercel/src/features/test_vercel_generate_object.ts | 23 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …/src/features/test_vercel_class_controller_register.ts | 27 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …st-vercel/src/features/test_vercel_tool_void_result.ts | 24 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …c/features/test_vercel_generate_text_with_tool_call.ts | 27 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …el/src/features/test_vercel_structured_output_basic.ts | 20 | * @evidence contracts/e2e.md#necessary-boundary The native structured-output harness must wire parse/coercion and valid | COMMENT |
| MEDIUM | …el/src/features/test_vercel_structured_output_basic.ts | 22 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …c/features/test_vercel_prefixed_tool_name_namespace.ts | 32 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …l/src/features/test_vercel_class_controller_execute.ts | 26 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM⚡ | …rc/features/test_vercel_generate_text_runtime_error.ts | 28 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …src/features/test_vercel_structured_output_validate.ts | 19 | * @evidence contracts/e2e.md#necessary-boundary The native-produced harness must connect a required numeric age to vali | COMMENT |
| MEDIUM | …src/features/test_vercel_structured_output_validate.ts | 21 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …-vercel/src/features/test_vercel_tool_output_schema.ts | 33 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| MEDIUM | …ures/test_vercel_tool_output_constraint_enforcement.ts | 38 | * @evidence contracts/e2e.md#state-isolation-and-reuse-validity The suite reuses ttsc's native binary keyed by plugin s | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| CRITICAL | website/compiler/cmd/playground/typia_plugin.go | 153 | shouldEmit := !prog.ParsedConfig.ParsedConfig.CompilerOptions.NoEmit.IsTrue() | CODE |
| CRITICAL⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| CRITICAL | packages/typia/native/cmd/ttsc-typia/build.go | 96 | shouldEmit := !prog.ParsedConfig.ParsedConfig.CompilerOptions.NoEmit.IsTrue() | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | …-challenges-to-agentic-ai-with-its-compiler-skill.html | 7 | content="0; url=https://dev.to/samchon/typia-20000x-faster-validator-challenges-to-agentic-ai-framework-with-its-com | CODE |
| MEDIUM | …-challenges-to-agentic-ai-with-its-compiler-skill.html | 14 | <a href="https://dev.to/samchon/typia-20000x-faster-validator-challenges-to-agentic-ai-framework-with-its-compiler | CODE |
| MEDIUM | tests/test-utils/examples/v2.0/semanticscholar.json | 1 | {"swagger":"2.0","basePath":"/graph/v1","paths":{"/author/batch":{"parameters":[{"in":"query","description":"A comma-sep | CODE |
| MEDIUM⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| MEDIUM⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| MEDIUM | …features/test_vercel_generate_text_validation_error.ts | 26 | * @evidence contracts/e2e.md#necessary-boundary Real SDK orchestration parses the injected nonnumeric add argument and | COMMENT |
| MEDIUM | …c/features/test_vercel_generate_text_multiple_tools.ts | 25 | * @evidence contracts/e2e.md#necessary-boundary Real SDK orchestration parses three injected tool calls and associates | COMMENT |
| MEDIUM | …c/features/test_vercel_generate_text_with_tool_call.ts | 25 | * @evidence contracts/e2e.md#necessary-boundary Real SDK orchestration must parse the authored add name/arguments and e | COMMENT |
| MEDIUM⚡ | …rc/features/test_vercel_generate_text_runtime_error.ts | 23 | * @evidence contracts/testing.md#independent-expectations The declared Calculator exception establishes the expected fa | COMMENT |
| MEDIUM⚡ | …rc/features/test_vercel_generate_text_runtime_error.ts | 26 | * @evidence contracts/e2e.md#necessary-boundary Real SDK orchestration must retain a controller runtime-exception failu | COMMENT |
| MEDIUM | .agents/skills/benchmark/SKILL.md | 39 | When benchmark findings produce multiple implementation issues, load the issue-campaign skill and use its planning and c | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …posite/test_native_callable_type_literal_provenance.ts | 230 | ["placeholder", {}], | CODE |
| LOW | …omposite/test_native_callable_type_literal_spelling.ts | 3646 | ["placeholder", {}], | CODE |
| LOW | tests/test-utils/examples/v3.0/fireblocks.json | 1 | {"openapi":"3.0.0","info":{"title":"Fireblocks API","version":"1.0.0","contact":{"email":"support@fireblocks.com"}},"ser | CODE |
| LOW | tests/test-utils/src/experimental/parse.ts | 38 | "name": "John Doe", | CODE |
| LOW | tests/test-utils/src/experimental/parse-error.ts | 14 | "name": "John Doe", // name of the user | CODE |
| LOW | …ngify/test_llm_stringify_native_validation_failures.ts | 233 | address: { street: "123 Main St", city: "NYC", zip: "10001" }, | CODE |
| LOW | …ructuredOutput/test_llm_json_structuredOutput_basic.ts | 74 | email: "test@test.com", | CODE |
| LOW | …a/src/features/llm.application/test_llm_application.ts | 136 | name: "John Doe", | CODE |
| LOW | examples/src/llm/parameters-parse.ts | 24 | "name": "John Doe", | CODE |
| LOW | examples/src/llm/parameters-validate.ts | 14 | name: "John Doe", | CODE |
| LOW | examples/src/llm/application-validate.ts | 17 | name: "John Doe", | CODE |
| LOW | examples/src/llm/parameters-coerce.ts | 17 | name: "John Doe", | CODE |
| LOW | examples/src/llm/application-parse.ts | 24 | "name": "John Doe", | CODE |
| LOW | examples/src/llm/application-coerce.ts | 17 | name: "John Doe", | CODE |
| LOW | packages/interface/src/tags/Example.ts | 21 | * email: string & Format<"email"> & Example<"user@example.com">; | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | website/src/compiler/createTypiaWorkerCompiler.ts | 72 | export function createTypiaWorkerCompiler( | CODE |
| LOW | website/src/compiler/createTypiaWorkerCompiler.ts | 419 | function isTypiaTransformDiagnostic( | CODE |
| LOW | website/src/compiler/createTypiaWorkerCompiler.ts | 437 | function mapTypiaTransformDiagnostic( | CODE |
| LOW | website/src/compiler/createTypiaWorkerCompiler.ts | 487 | function isOptionalPositiveInteger(value: unknown): boolean { | CODE |
| LOW | website/src/compiler/createTypiaWorkerCompiler.ts | 491 | function isOptionalNonNegativeInteger(value: unknown): boolean { | CODE |
| LOW | …utils/src/utils/internal/stringifyValidationFailure.ts | 19 | export function stringifyValidationFailure( | CODE |
| LOW | …utils/src/utils/internal/stringifyValidationFailure.ts | 301 | function getMissingArrayElementErrors( | CODE |
| LOW | packages/utils/src/utils/internal/parseLenientJson.ts | 316 | function skipCommentsAndWhitespace(input: string): string { | CODE |
| LOW | packages/utils/src/utils/internal/coerceLlmArguments.ts | 281 | function findMatchingObjectInAnyOf( | CODE |
| LOW | …ypia/src/transformers/NoTransformConfigurationError.ts | 2 | export function NoTransformConfigurationError(name: string): never { | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM⚡ | tests/test-utils/examples/v3.0/openai.json | 1 | {"openapi":"3.0.0","info":{"title":"OpenAI API","description":"The OpenAI REST API. Please see https://platform.openai.c | CODE |
| MEDIUM | tests/test-utils/examples/v3.0/fireblocks.json | 1 | {"openapi":"3.0.0","info":{"title":"Fireblocks API","version":"1.0.0","contact":{"email":"support@fireblocks.com"}},"ser | CODE |