NPM companion package recommendations
This repository contains the code that is used to power NPM package companion recommendations. The POC work around this lives in this repo. The approached used is based off of CVAE, see citation below.
Li, Xiaopeng, and James She. "Collaborative variational autoencoder for recommender systems."
In Proceedings of the 23rd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining,
pp. 305-314. ACM, 2017.
Sample Request
Endpoint: /api/v1/companion_recommendation
Method: POST
Content-type: application/json
Body:
[{
"comp_package_count_threshold": 5,
"package_list": ["express", "mongoose"]
}]
Sample Response
Content-type: application/json
{
"missing_packages": [],
"recommendations": [
{
"companion_probability": 0.9231991381908954,
"package_name": "alaska",
"tags": [
"alaska",
"koa",
"mongoose",
"react",
"mvc",
"web"
]
},
{
"companion_probability": 0.8385970486757496,
"package_name": "koa-grace-mongo",
"tags": [
"koa",
"mongo",
"grace-mongo"
]
},
{
"companion_probability": 0.6536468661722873,
"package_name": "ewares",
"tags": [
"express",
"middleware",
"express-middlewares"
]
},
{
"companion_probability": 0.46540235321030543,
"package_name": "peento",
"tags": [
"blog"
]
},
{
"companion_probability": 0.3881866445153202,
"package_name": "koa",
"tags": [
"web",
"app",
"http",
"application",
"framework",
"middleware",
"rack"
]
},
{
"companion_probability": 0.37067553026014505,
"package_name": "harvesterjs",
"tags": [
"json",
"api",
"jsonapi",
"json-api",
"framework",
"rest",
"restful"
]
},
{
"companion_probability": 0.343074615791371,
"package_name": "keystone",
"tags": [
"express",
"web",
"app",
"cms",
"admin",
"framework",
"mongoose",
"gui",
"site",
"website",
"forms"
]
},
{
"companion_probability": 0.2857418338795869,
"package_name": "strong-remoting",
"tags": [
"StrongLoop",
"LoopBack",
"Remoting",
"REST"
]
},
{
"companion_probability": 0.2750733954908234,
"package_name": "mailgun-js",
"tags": [
"email",
"mailgun"
]
},
{
"companion_probability": 0.24752054711697755,
"package_name": "requisition",
"tags": [
"request",
"promise",
"http",
"https",
"client"
]
}
]
}
Scripts to check if test code conforms to defined standards
Code written in Python
Check for all possible issues
The script named check-all.sh is to be used to check the sources for all detectable errors and issues. This script can be run w/o any arguments:
./check-all.sh
Expected script output:
Running all tests and checkers
Check all BASH scripts
OK
Check documentation strings in all Python source file
OK
Detect common errors in all Python source file
OK
Detect dead code in all Python source file
OK
Run Python linter for Python source file
OK
Unit tests for this project
OK
Done
Overal result
OK
An example of script output when one error is detected:
Running all tests and checkers
Check all BASH scripts
Error: please look into files check-bashscripts.log and check-bashscripts.err for possible causes
Check documentation strings in all Python source file
OK
Detect common errors in all Python source file
OK
Detect dead code in all Python source file
OK
Run Python linter for Python source file
OK
Unit tests for this project
OK
Done
Overal result
One error detected!
Please note that the script creates bunch of *.log and *.err files that are temporary and won't be commited into the project repository.
Coding standards
- You can use scripts
check-PEP8-style.shandcheck-python-docstyle.shto check if the code follows PEP 8 and PEP 257 coding standards. These scripts can be run w/o any arguments:
./check-PEP8-style.sh
./check-python-docstyle.sh
The first script checks the indentation, line lengths, variable names, whitespace around operators etc. The second script checks all documentation strings - its presence and format. Please fix any warnings and errors reported by these scripts.
List of directories containing source code, that needs to be checked, are stored in a file directories.txt
Code complexity measurement
The scripts measure-cyclomatic-complexity.sh and measure-maintainability-index.sh are used to measure code complexity. These scripts can be run w/o any arguments:
./measure-cyclomatic-complexity.sh
./measure-maintainability-index.sh
The first script measures cyclomatic complexity of all Python sources found in the repository. Please see this table for further explanation how to comprehend the results.
The second script measures maintainability index of all Python sources found in the repository. Please see the following link with explanation of this measurement.
You can specify command line option --fail-on-error if you need to check and use the exit code in your workflow. In this case the script returns 0 when no failures has been found and non zero value instead.
Dead code detection
The script detect-dead-code.sh can be used to detect dead code in the repository. This script can be run w/o any arguments:
./detect-dead-code.sh
Please note that due to Python's dynamic nature, static code analyzers are likely to miss some dead code. Also, code that is only called implicitly may be reported as unused.
Because of this potential problems, only code detected with more than 90% of confidence is reported.
List of directories containing source code, that needs to be checked, are stored in a file directories.txt
Common issues detection
The script detect-common-errors.sh can be used to detect common errors in the repository. This script can be run w/o any arguments:
./detect-common-errors.sh
Please note that only semantical problems are reported.
List of directories containing source code, that needs to be checked, are stored in a file directories.txt
Check for scripts written in BASH
The script named check-bashscripts.sh can be used to check all BASH scripts (in fact: all files with the .sh extension) for various possible issues, incompatibilities, and caveats. This script can be run w/o any arguments:
./check-bashscripts.sh
Please see the following link for further explanation, how the ShellCheck works and which issues can be detected.
LICENSE
Licensed under the GNU GPL v3.0, copyright Red Hat Inc., 2018. Licenses for vendor code are included in the respective files/folders.