Specification for interoperability of common algebraic structures in JavaScript. 

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fantasy-land

Specification for interoperability of common algebraic structures in JavaScript

davidchambers

joneshf

laiff

kennknowles

puffnfresh

stickupkid

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Ambiguous License Classifier

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Bad semver

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Bad dependency semver

Source files contain bidirectional unicode control characters. This could indicate a Trojan source supply chain attack. See: trojansource.codes for more information.

What are bidirectional unicode control characters?

Bidirectional unicode control characters

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What is bin script confusion?

Bin script confusion

Semantic versions published out of chronological order.

What is a chronological version anomaly?

Chronological version anomaly

Project maintainer's SSH key has been compromised.

What is a compromised SSH key?

Compromised SSH key

(Experimental) Copyleft license information was found.

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Copyleft License

Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

Critical CVE

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What is a CVE?

High CVE

Uses debug, reflection and dynamic code execution features.

What is debug access?

Debug access

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Deprecated

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Deprecated SPDX exception

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

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Possible typosquat attack

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

What is dynamic require?

Dynamic require

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Empty package

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Environment variable access

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Name

Extraneous dependency

Contains a dependency which resolves to a file. This can obfuscate analysis and serves no useful purpose.

What are file dependencies?

File dependency

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What is filesystem access?

Filesystem access

Package has a dependency with a floating version range. This can cause issues if the dependency publishes a new major version.

What are wildcard dependencies?

Wildcard dependency

Contains a dependency which resolves to a remote git URL. Dependencies fetched from git URLs are not immutable can be used to inject untrusted code or reduce the likelihood of a reproducible install.

What are git dependencies?

Git dependency

Contains a dependency which resolves to a GitHub URL. Dependencies fetched from GitHub specifiers are not immutable can be used to inject untrusted code or reduce the likelihood of a reproducible install.

What are GitHub dependencies?

GitHub dependency

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What is an AI-detected potential code anomaly?

AI-detected potential code anomaly

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What is AI-detected potential malware?

AI-detected potential malware

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AI-detected potential security risk

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Why is native code a concern?

Native code

Contains high entropy strings. This could be a sign of encrypted data, leaked secrets or obfuscated code.

What are high entropy strings?

High entropy strings

Contains unicode homoglyphs which can be used in supply chain confusion attacks.

What are unicode homoglyphs?

Unicode homoglyphs

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What are http dependencies?

HTTP dependency

Install scripts are run when the package is installed. The majority of malware in npm is hidden in install scripts.

What is an install script?

Install scripts

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What is an invalid manifest file?

Invalid manifest file

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What are invisible characters?

Invisible chars

(Experimental) Package license has recently changed.

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License change

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License exception

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What is a license policy violation?

License Policy Violation

Contains long string literals, which may be a sign of obfuscated or packed code.

What's wrong with long strings?

Long strings

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

What is a major refactor?

Major refactor

This package is malware. We have asked the package registry to remove it.

What is known malware?

Known malware

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What is manifest confusion?

Manifest confusion

Contains a medium severity Common Vulnerability and Exposure (CVE).

What is a medium CVE?

Medium CVE

Contains a low severity Common Vulnerability and Exposure (CVE).

What is a mild CVE?

Low CVE

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

What's wrong with minified code?

Minified code

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Misc. License Issues

The package was published by an npm account that no longer exists.

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Non-existent author

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Missing dependency

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What is a missing license?

Missing license

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What is a missing tarball?

Missing package tarball

(Experimental) Package contains multiple licenses.

What is a mixed license?

Mixed license

(Experimental) Package contains a modified version of an SPDX license exception. Please read carefully before using this code.

What is a modified license exception?

Modified license exception

(Experimental) Package contains a modified version of an SPDX license. Please read carefully before using this code.

What is a modified license?

Modified license

What is network access?

Network access

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

What is new author?

New author

Package does not specify a list of contributors or an author in package.json.

Why is contributor and author data important?

No contributors or author data

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Why are bug trackers important?

No bug tracker

(Experimental) License information could not be found.

No License Found

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Why are READMEs important?

No README

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Why are missing repositories important?

No repository

Package does not have any tests. This is a strong signal of a poorly maintained or low quality package.

What does no tests mean?

No tests

Package is not semver >=1. This means it is not stable and does not support ^ ranges.

		{
		"name": "fantasy-land",
		"author": "Brian McKenna",
		"version": "1.0.0",
		"version": "1.0.1",
		"description": "Specification for interoperability of common algebraic structures in JavaScript",
		@@ -6,0 +6,0 @@ "license": "MIT",

		@@ -338,6 +338,6 @@ # Fantasy Land Specification
		```hs
		chainRec :: ChainRec m => ((a -> c) -> (b -> c) -> a -> m c) -> a -> m b
		chainRec :: ChainRec m => ((a -> c, b -> c, a) -> m c, a) -> m b
		```

		A Type which has a ChainRec must provide an `chainRec` method on itself
		A Type which has a ChainRec must provide a `chainRec` method on itself
		or its `constructor` object. The `chainRec` method takes two arguments:
		@@ -344,0 +344,0 @@

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