# @epdoc/typeutil

Includes:

 * TypeScript-capable type-checking, type-guard and casting utilities
   * e.g. `isString()`, `isPosInteger()`, `asInteger()`
   * A `Util` object to encapslate type checking and reach into an Object's properties
 * Type declarations
   * `Integer`, `Dict`
 * Other common utilities, for example
   * `delayPromise` is `setTimeout` as a Promise
   * `camelToDash`, `underscoreCapitalize` string conversion
   * `deepCopy`, `deepEquals`
   * `pad` a string

## Utility Functions   

```ts
import { isBoolean } from '@epdoc/typeutil';

if (isBoolean(value)) {
  doTask();
}
```

## DictUtil

```ts
import { dictUtil as test } from '@epdoc/typeutil';

let obj = { a: { b: 3 } };
test(obj)
  .property('a.b')
  .value(); // returns 3

const objUtil:DictUtil = dictUtil(obj);
const abVal:DictUtil = objUtil.property('a.b');
console.log( `Object value=${abVal.value()} and isInteger=${abVal.isInteger()}`);
```

## Build and Publish

```bash
npm run build
npm test
```

# Publish to @epdoc

```bash
npm run publish
```


Typescript-aware guard tests and other standalone utilities. 

Supply Chain Attack on Axios Pulls Malicious Dependency from npm

@epdoc/typeutil

Typescript-aware guard tests and other standalone utilities

jpravetz

typeutil

An ambiguous license classifier was found.

What is an ambiguous license classifier?

Ambiguous License Classifier

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Bad text encoding

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Bad semver

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What is bad dependency semver?

Bad dependency semver

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What are bidirectional unicode control characters?

Bidirectional unicode control characters

This package has multiple bin scripts with the same name. This can cause non-deterministic behavior when installing or could be a sign of a supply chain attack.

What is bin script confusion?

Bin script confusion

This Chrome extension includes content scripts that execute JavaScript on specified websites.

What are Chrome extension content scripts?

Chrome: Content Script

This Chrome extension requests host permissions to access specific websites or domains.

What are Chrome extension host permissions?

Chrome: Host Permission

This Chrome extension requests permissions to access browser APIs, user data, or system features.

What are Chrome extension permissions?

Chrome: Permission

This Chrome extension requests wildcard host permissions that grant broad access to websites.

What are Chrome extension wildcard host permissions?

Chrome: Wildcard Host Permission

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

What is a compromised SSH key?

Compromised SSH key

What do I need to know about license files?

Copyleft License

Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

Critical CVE

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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

License is deprecated which may have legal implications regarding the package's use.

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Deprecated license

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

What is a typosquat?

Possible typosquat attack

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Dynamic require

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Empty package

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Environment variable access

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Explicitly Unlicensed Item

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What are extraneous dependencies?

Name

Extraneous dependency

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What are file dependencies?

File dependency

Accesses the file system, and could potentially read sensitive data.

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

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Alert title

Generic alert

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What are GitHub Actions taint flows?

GitHub Actions: Input argument exported as environment variable

An input argument to this GitHub Action is being passed back as an output. If a user of this action passes untrusted input, it could be used in an insecure manner by consuming workflows.

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An input argument to this GitHub Action flows into a dangerous sink (such as shell command execution). This could allow a malicious user to inject commands or exploit the action.

GitHub Actions: Input argument flows to dangerous sink

A GitHub context variable (such as issue title, PR description, or comment body) is being exported as an environment variable. These context values are user-controlled and could be exploited by subsequent workflow steps.

GitHub Actions: GitHub context variable exported as environment variable

A GitHub context variable (such as issue title, PR description, or comment body) is being passed back as an output. These context values are user-controlled and could be exploited by consuming workflows.

GitHub Actions: GitHub context variable passed back as output

A GitHub context variable (such as issue title, PR description, or comment body) flows into a dangerous sink (such as shell command execution). This is a critical security issue that could allow command injection or code execution attacks.

GitHub Actions: GitHub context variable flows to dangerous sink

An environment variable flows into a dangerous sink (such as shell command execution). If this environment variable comes from an untrusted source, it could be exploited to inject commands.

GitHub Actions: Environment variable flows to dangerous sink

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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

AI has identified unusual behaviors that may pose a security risk.

What is an AI-detected potential code anomaly?

AI-detected potential code anomaly

AI has identified this package as a potential typosquat of a more popular package. This suggests that the package may be intentionally mimicking another package's name, description, or other metadata.

What is AI-detected potential typosquatting?

AI-detected possible typosquat

AI has identified this package as malware. This is a strong signal that the package may be malicious.

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AI-detected potential malware

AI has determined that this package may contain potential security issues or vulnerabilities.

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AI-detected potential security risk

Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

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

Contains a dependency which resolves to a remote HTTP URL which could be used to inject untrusted code and reduce overall package reliability.

What are http dependencies?

HTTP dependency

Install scripts are run when the package is installed or built. Malicious packages often use scripts that run automatically to execute payloads or fetch additional code.

What is an install script?

Install scripts

Package has an invalid manifest file and can cause installation problems if you try to use it.

What is an invalid manifest file?

Invalid manifest file

Source files contain invisible characters. This could indicate source obfuscation or a supply chain attack.

What are invisible characters?

Invisible chars

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License change

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License exception

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License Policy Violation

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Long strings

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Major refactor

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Known malware

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Manifest confusion

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Medium CVE

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Low CVE

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Minified code

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Misc. License Issues

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Non-existent author

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Missing dependency

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What is a missing license?

Missing license

This package is missing its tarball. It could be removed from the npm registry or there may have been an error when publishing.

What is a missing tarball?

Missing package tarball

What is a mixed license?

Mixed license

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

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.

@epdoc/typeutil

@epdoc/typeutil

Utility Functions

DictUtil

Build and Publish

Publish to @epdoc

Keywords

Related posts

@epdoc/typeutil

@epdoc/typeutil

Utility Functions

DictUtil

Build and Publish

Publish to @epdoc

Keywords

Related posts

Node.js Drops Bug Bounty Rewards After Funding Dries Up

The Hidden Blast Radius of the Axios Compromise