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init basic tree shaking for unused code app [project99] #130

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Merged
merged 1 commit into from
Feb 15, 2024
Merged

init basic tree shaking for unused code app [project99] #130

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22 changes: 22 additions & 0 deletions 99-Tree Shaking for Unused Code/index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="styles.css" />
<title>Tree Shaking App</title>
</head>
<body>
<div class="container">
<h1>Tree Shaking App</h1>
<textarea
id="inputCode"
placeholder="Paste your JavaScript code here..."
></textarea>
<button onclick="performTreeShaking()">Perform Tree Shaking</button>
<div id="outputCode"></div>
</div>

<script src="script.js"></script>
</body>
</html>
44 changes: 44 additions & 0 deletions 99-Tree Shaking for Unused Code/script.js
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function performTreeShaking() {
const inputCode = document.getElementById("inputCode").value;

if (!inputCode.trim()) {
alert("Please enter JavaScript code for tree shaking.");
return;
}

// In a real-world scenario, you would use a build tool like Webpack with Babel for tree shaking.
// Here, we'll use a simplified example to illustrate the process.

try {
const treeShakenCode = treeShakeCode(inputCode);
displayResult(treeShakenCode);
} catch (error) {
alert(`Error during tree shaking: ${error.message}`);
}
}

function treeShakeCode(code) {
// Placeholder for tree shaking logic using Babel
// In practice, you'd need a build tool like Webpack with Babel and proper configuration for tree shaking.
// Here, we'll use a simple logic to illustrate the concept.

const { transform } = require("@babel/core");
const presetEnv = require("@babel/preset-env");

const result = transform(code, {
presets: [
[presetEnv, { modules: false }], // Set modules to false to enable tree shaking
],
});

if (result && result.code) {
return result.code;
} else {
throw new Error("Failed to perform tree shaking.");
}
}

function displayResult(result) {
const outputCode = document.getElementById("outputCode");
outputCode.textContent = result;
}
29 changes: 29 additions & 0 deletions 99-Tree Shaking for Unused Code/styles.css
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body {
font-family: Arial, sans-serif;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
margin: 0;
}

.container {
text-align: center;
}

textarea {
width: 100%;
height: 150px;
margin: 10px 0;
}

button {
padding: 10px 20px;
font-size: 16px;
margin: 10px;
}

#outputCode {
margin-top: 20px;
font-size: 18px;
}