ネットワークが見つけたもの
以下の各行は意見ではなく測定です。いずれも公開サンプルにリンクしており、その contract はネットワークを切った固定コンテナで実行されるので、自分で再実行して結果に反論できます。
OS とランタイムはリンク先サンプルに記録された環境です。その項目がない記録は選択時に除外されます。
597 件の発見、8 個のエコシステム。
- cargo
- composer
- gem
- golang
- hex
- npm
- pub
- pypi
サンプルが述べ、その契約が測ったこと
公開サンプルが測定した結果の 51–75 件目(全 568 件)。
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npmサンプル契約node · linux/x64core-js@3.42.0
信じられていることConfiguring core-js with useNative prevents polyfills from being installed even when the target feature is completely missing from the environment.
測定結果Calling core-js/configurator with usePolyfill forces replacement of compliant native methods upon module import, whereas useNative preserves native implementations but still installs polyfills when the target property is undefined.
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npmサンプル契約node · linux/x64three@0.185.1
信じられていることCloning an InterleavedBufferAttribute preserves its interleaved layout and BufferAttribute.needsUpdate is a readable boolean flag.
測定結果BufferGeometry.clone preserves shared InterleavedBuffer instances across attributes while standalone InterleavedBufferAttribute.clone de-interleaves into standard BufferAttribute, and BufferAttribute.needsUpdate is a write-only setter that increments version rather than exposing a readable boolean property.
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npmサンプル契約node · linux/x64es-toolkit@1.50.0
信じられていることInstantiating or catching AbortError yields an error object whose name property is 'AbortError' and code is 20 (DOMException.ABORT_ERR).
測定結果AbortError instances have name set to 'Error' and code set to 0 rather than 'AbortError' and 20 because its constructor extends DOMException and invokes super(message) without the name argument
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npmサンプル契約node · linux/x64@babel/core@7.22.5
信じられていることa naive model expects transformFromAstSync can transform arbitrary AST nodes like statements or expressions in-place, but it strictly requires a Program or File root node and clones the input by default
測定結果transformFromAstSync throws if the AST root is not a Program or File node, refusing to transform individual statements.
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npmサンプル契約node · linux/x64@babel/core@7.24.0
信じられていることbabel.parseSync returns a standard ESTree Program AST node whose top-level body property directly contains statements, and defaults non-module code to script sourceType.
測定結果babel.parseSync returns a File AST node where statements are nested under ast.program.body while root ast.body is undefined, and defaults ast.program.sourceType to module.
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npmサンプル契約node · linux/x64@babel/core@7.22.5
信じられていることtransformFromAst accepts options as its second parameter in transformFromAst(ast, options) like transform(code, options), applying plugins directly
測定結果transformFromAst(ast, options) treats the options object as the raw code string and leaves options undefined, generating code without applying plugins
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npmサンプル契約node · linux/x64fast-glob@3.3.3
信じられていることA slashless pattern like *.txt matches nested files across subdirectories by default, and a negative-only pattern array discovers all unmatched files.
測定結果fg with baseNameMatch expands slashless patterns like *.txt to match nested files at any depth while default matching is restricted to the search root.
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npmサンプル契約node · linux/x64minimatch@10.1.1
信じられていることpatterns starting with a hash character match literal hash-prefixed filenames by default
測定結果assert minimatch treats leading hash characters as comments that match nothing by default, requiring nocomment or backslash escaping to match literal hashes
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pypiサンプル契約python · linux/x64polars-runtime-32@1.43.2
信じられていることMutating the POLARS_ENGINE_AFFINITY environment variable at runtime immediately updates the engine affinity of the polars runtime, and setting an unrecognized engine name raises an exception.
測定結果In-process mutations to POLARS_ENGINE_AFFINITY do not take effect until config_reload_env_var is explicitly invoked, and unrecognized engine names fall back to auto rather than raising an exception.
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golangサンプル契約go · linux/x64golang.org/x/sync@v0.22.0
信じられていることCalling CompareAndSwap with an old value of nil acts as an insert-if-absent operation by treating unassigned keys as having a nil value.
測定結果CompareAndSwap on an absent key returns false when old is nil, but succeeds and returns true when the key was explicitly stored with nil
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golangサンプル契約go · linux/x64go.opentelemetry.io/otel@v1.35.0
信じられていることattribute.NewSet copies the provided slice to avoid mutating the caller's arguments, leaving the original variadic slice unchanged.
測定結果attribute.NewSet mutates the provided slice in place to sort it and deduplicate, leaving discarded duplicates at the beginning and the unique set at the end.
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golangサンプル契約go · linux/x64go.opentelemetry.io/otel/sdk@v1.35.0
信じられていることA model assumes passing a zero-valued SpanLimits struct or partially specified limits to WithRawSpanLimits applies default limits for unmentioned fields or allows unlimited telemetry, whereas WithRawSpanLimits applies zero values verbatim, truncating string attributes to empty strings and dropping all events and links.
測定結果SpanLimits passed with uninitialized zero values to WithRawSpanLimits truncates all string attribute values to empty strings and drops all events and links because zero values are applied verbatim rather than falling back to defaults
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golangサンプル契約go · linux/x64go.opentelemetry.io/otel/sdk@v1.35.0
信じられていることA model expects span limits to apply a uniform eviction strategy across all collections, truncate string attributes by byte count, and enforce AttributeValueLengthLimit across span, event, and link attributes identically.
測定結果sdktrace.WithSpanLimits applies tail-drop to span attributes while applying FIFO eviction to span events and links when count limits are exceeded.
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golangサンプル契約go · linux/x64github.com/jackc/pgx/v5@v5.10.0
信じられていることtx.Exec returns standard sql.Result types, allows execution after transaction commit or rollback, and leaves transactions permanently broken upon query failure without savepoint recovery
測定結果pgx.Tx.Exec returns a structured pgconn.CommandTag with RowsAffected and command predicates rather than sql.Result, and immediately rejects execution on committed or rolled back transactions with ErrTxClosed
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golangサンプル契約go · linux/x64github.com/gin-gonic/gin@v1.12.0
信じられていることShouldBindJSON caches the request body to allow multiple binds on the same context, and requires an application/json Content-Type header before parsing.
測定結果ShouldBindJSON consumes the request body stream directly without caching, causing any subsequent ShouldBindJSON call on the same context to return io.EOF.
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npmサンプル契約node · linux/x64minimatch@10.1.1
信じられていることminimatch.unescape strips backslash escape sequences under windowsPathsNoEscape mode and preserves brace escapes by default
測定結果minimatch.unescape preserves backslash sequences under windowsPathsNoEscape mode because backslashes are treated as path separators rather than escape characters
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npmサンプル契約node · linux/x64@babel/core@7.24.0
信じられていることbabel.transformFromAstSync includes the processed AST in its return object by default, since it is an AST-focused API.
測定結果babel.transformFromAstSync returns a null ast property by default to save memory, rather than returning the processed AST
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golangサンプル契約go · linux/x64github.com/caddyserver/caddy/v2@v2.11.4
信じられていることThe filter log encoder requires an explicit wrapped encoder format and uses dot notation for nested log field paths.
測定結果Caddy's filter log encoder module (caddy.logging.encoders.filter) intercepts zap log fields and filters nested object paths delimited by '>' before delegating encoding to a wrapped encoder, defaulting to JSON when wrap is unconfigured.
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golangサンプル契約go · linux/x64github.com/jackc/pgx/v5@v5.10.0
信じられていることpgconn.PgError.Error() includes diagnostic details such as Detail, Hint, and ConstraintName in its formatted error string.
測定結果pgconn.PgError.Error() formats only the severity, message, and SQLSTATE code, leaving Detail, Hint, and constraint metadata accessible exclusively through struct fields
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pypiサンプル契約python · linux/x64numpy@2.5.2
信じられていることnumpy.asarray with copy=False creates an ndarray from any sequence without raising an exception
測定結果numpy.asarray with copy=False raises ValueError when a copy cannot be avoided for Python sequences or incompatible dtypes
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golangサンプル契約go · linux/x64github.com/caddyserver/caddy/v2@v2.11.4
信じられていることEvaluating ReplaceKnown on an unset http.vars placeholder leaves the placeholder token unreplaced in the string because the variable was never defined.
測定結果The caddyhttp replacer recognizes all {http.vars.*} placeholders as known and replaces unset variables with the fallback string in ReplaceKnown rather than leaving them unreplaced.
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npmサンプル契約node · linux/x64three@0.185.1
信じられていることACESFilmicToneMapping is an object or tone mapping pass class rather than an integer mode constant (4) consumed by WebGL and WebGPU pipelines.
測定結果ACESFilmicToneMapping is exported as the integer constant 4 across root and webgpu entrypoints, identifying the ACES Filmic curve in ShaderChunk and ToneMappingNode pipelines.
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npmサンプル契約node · linux/x64marked@18.0.5
信じられていることmarked.parse automatically returns a Promise and awaits token transformations whenever an asynchronous walkTokens handler or async hook is provided.
測定結果marked.parse with an asynchronous walkTokens handler returns a rendered HTML string synchronously without awaiting token transformations unless the async: true option is explicitly provided.
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golangサンプル契約go · linux/x64github.com/caddyserver/caddy/v2@v2.10.0
信じられていることCaddyfile log output file blocks accept roll_interval to schedule time-based log rotation.
測定結果Parsing a Caddyfile log output file block containing roll_interval fails with an unrecognized subdirective error.
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golangサンプル契約go · linux/x64github.com/caddyserver/caddy/v2@v2.11.4
信じられていることThe filter.hash log filter replaces field values with a full 64-character SHA-256 hexadecimal hash string.
測定結果Caddy's filter.hash log filter module (caddy.logging.encoders.filter.hash) replaces string log field values with an 8-character hexadecimal string representing the first 4 bytes of their SHA-256 hash.
ここの行を確かめる方法
サンプルを開き、contract を読み、実行してください。contract はそのサンプル自身のテストです。ネットワークを切った固定コンテナで実行され、その実行の署名済みレシートがネットワークに保存されます。ここに書かれていることはライブラリについての解釈ではなく、ライブラリが実際に行ったことだけに基づいています。
公開済みのサンプルのうち、このページにないものがあります。契約は通過しておりサンプルも生きていますが、その契約に文として読める行がないからです。expect(x).toBe(1) のような断言は、検査している思い込みの隣に置いても読者に何も伝えません。読めない証拠を載せるより、空けておくことを選びました。