Code Analyzer JS
Code Analyzer JS is a Visual Studio Code extension that analyzes and suggests optimizations for JavaScript code. It identifies patterns such as redundant loops and recommends more efficient alternatives, like using higher-order functions (map, filter, reduce). The extension also comments the original code to preserve it.
Features
- Detects
for loops and recommends replacements with higher-order functions like map, filter, and reduce.
- Automatically comments the old code and inserts the optimized version.
- Integrates with the VS Code problems panel to display optimization suggestions.
- Analyzes multiple loops in a single execution.
Example Usage
1. Optimizing filter
Original Code:
const result = [];
for (let i = 0; i < array.length; i++) {
if (array[i] % 2 === 0) {
result.push(array[i]);
}
}
After analysis:
// const result = [];
// for (let i = 0; i < array.length; i++) {
// if (array[i] % 2 === 0) {
// result.push(array[i]);
// }
// }
const result = array.filter(x => x % 2 === 0);
2. Optimizing reduce
Original Code:
let sum = 0;
for (let i = 0; i < array.length; i++) {
sum += array[i];
}
After analysis:
// let sum = 0;
// for (let i = 0; i < array.length; i++) {
// sum += array[i];
// }
const sum = array.reduce((acc, i) => acc + i, 0);
3. Multiple Loops Optimization
Original Code:
const result = [];
for (let i = 0; i < array.length; i++) {
if (array[i] % 2 === 0) {
result.push(array[i]);
}
}
let sum = 0;
for (let i = 0; i < array.length; i++) {
sum += array[i];
}
After analysis:
// const result = [];
// for (let i = 0; i < array.length; i++) {
// if (array[i] % 2 === 0) {
// result.push(array[i]);
// }
// }
const result = array.filter(x => x % 2 === 0);
// let sum = 0;
// for (let i = 0; i < array.length; i++) {
// sum += array[i];
// }
const sum = array.reduce((acc, i) => acc + i, 0);
Requirements
- Visual Studio Code
^1.96.0.
- Node.js environment set up.
Commands
Main Command:
Code Analyzer: Analyze Code
- Triggered when opening JavaScript files or pressing
Ctrl+Shift+P and selecting the command.
Extension Settings
No additional settings are required for this version. The extension works automatically when opening .js files.
Known Issues
- Partial Code: The analysis may be imprecise for incomplete or malformed code.
- Limited Compatibility: Currently supports only plain JavaScript and does not integrate with TypeScript.
Release Notes
1.0.0
- Initial stable release:
- Detects
for loops.
- Suggests replacements with
map, filter, and reduce.
- Automatically comments old code.
- Supports multiple loop optimizations in a single execution.
Contributing
Feedback and contributions are welcome! To report issues or suggest improvements, visit the GitHub repository.
References
