stdlib-analyzer

It is a CLI tool that scans Javascript code and suggest replacements as per stdlib library for commonly used native JS functions.

What it does?

stdlib-analyzer analyzes Javascript(.js) files and finds built-in Javascript utilities like Math.random(), Math.floor(), parseInt, etc. and suggests stdlib based alternatives that are more robust, modular, Type-safe and can be used for Scientific and mathematical computing for better precision.

Clone this repository and install dependencies:

git clone https://github.com/<your-username>/stdlib-showcase
cd stdlib-analyzer
npm install

To use the tool globally:

npm link

Usage

analyzer [options] <file1.js> [file2.js ...]

CLI

Options

Flag	Description
--help, -h	Display usage instructions
--summary	Print summary of detected utilities

Example

Given a file test.js:

const value = Math.random();
const parsed = parseInt("17");
const check = isNaN("AJ");

if (typeof value === "string") {
  console.log("String");
}

Run the analyzer:

analyzer test.js --summary

Output:

[Line: 21 : Column: 14] Math.random()  -> Suggestion: @stdlib/random/base/mt19937 (https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/random/base/mt19937)
[Line: 22 : Column: 15] parseInt()  -> Suggestion: @stdlib/utils/parse-json (https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/utils/parse-json)
[Line: 23 : Column: 14] isNaN()  -> Suggestion: @stdlib/assert/is-nan (https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/assert/is-nan)
Summary:
- Math.random() : found 1 times.
- parseInt() : found 1 times.
- isNaN() : found 1 times.