# MapD CrossFilter

JavaScript library for exploring large multivariate datasets in the browser. Based on [CrossFilter](https://github.com/square/crossfilter)

### Table of Contents
- [Quick Start](#quick-start)
- [Synopsis](#synopsis)
- [Testing](#testing)
- [Scripts](#scripts)
- [Contributing](.github/CONTRIBUTING.md)
- [License](LICENSE)

# Quick Start
A full build of `mapd-crossfilter` is available in the cloned/forked version of this repo. To build your own code changes, however, you can run

```bash
npm install
npm run build
```

# Synopsis

Unlike the original Crossfilter, `mapd-crossfilter` makes asynchronous network requests to retrieve data. As part of this process, `mapd-crossfilter` forms SQL queries that are used to retrieved data which will then be rendered by [`mapd-charting`](https://github.com/mapd/mapd-charting).


# Testing

New components in MapD-Crossfilter should be unit-tested.  All tests should be in the test directory.

```
+-- src
|   +-- /modules/binning.js
+-- test
|   +-- /binning.unit.spec.js
```

All tests run on
```bash
npm run test
```

To check only unit tests, run:
```bash
npm run test:unit
```

# Scripts

Command | Description
--- | ---
`npm run test` | Runs unit tests and provides coverage info
`npm run test:unit` | Runs unit tests
`npm run build` | Bundles crossfilter


Fast multidimensional filtering for coordinated views. 

mapd-crossfilter

Fast multidimensional filtering for coordinated views.

mapd-core

(Experimental) An ambiguous license classifier was found.

What is an ambiguous license classifier?

Ambiguous License Classifier

Source files are encoded using a non-standard text encoding.

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Bad text encoding

Package version is not a valid semantic version (semver).

What is bad semver?

Bad semver

Package has dependencies with an invalid semantic version. This could be a sign of beta, low quality, or unmaintained dependencies.

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

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.

What do I need to know about license files?

Copyleft License

Contains a Critical Common Vulnerability and Exposure (CVE).

What is a critical CVE?

Title

Critical CVE

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

What is a CVE?

High CVE

Uses debug, reflection and dynamic code execution features.

What is debug access?

Debug access

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What is a deprecated package?

Deprecated

(Experimental) Contains a known deprecated SPDX license exception.

What is a deprecated SPDX exception?

Deprecated SPDX exception

(Experimental) 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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What is dynamic require?

Dynamic require

Package does not contain any code. It may be removed, is name squatting, or the result of a faulty package publish.

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Empty package

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

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Environment variable access

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What are extraneous dependencies?

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

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

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

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What are GitHub dependencies?

GitHub dependency

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AI-detected potential code anomaly

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

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AI-detected potential security risk

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Native code

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High entropy strings

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Unicode homoglyphs

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HTTP dependency

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Install scripts

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Invalid manifest file

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What are invisible characters?

Invisible chars

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License change

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License exception

This package is not allowed per your license policy. Review the package's license to ensure compliance.

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License Policy Violation

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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

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Known malware

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Manifest confusion

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

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Medium CVE

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What is a mild CVE?

Low CVE

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What's wrong with minified code?

Minified code

(Experimental) A package's licensing information has fine-grained problems.

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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Modified license exception

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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

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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

Package does not have a linked source code repository. Without this field, a package will have no reference to the location of the source code use to generate the package.

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.

What is wrong with semver < v1?

No v1

What is a missing website?

No website

(Experimental) Package has a non-FSF-approved license.

What is a non FSF license?

Non FSF license

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What is a non OSI license?

Non OSI license

(Experimental) Package contains a non-standard license somewhere. Please read carefully before using.

Command	Description
`npm run test`	Runs unit tests and provides coverage info
`npm run test:unit`	Runs unit tests
`npm run build`	Bundles crossfilter

mapd-crossfilter

MapD CrossFilter

Table of Contents

Quick Start

Synopsis

Testing

Scripts

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