"Exploring the world of TypeScript Classes in combination with Webpack

Question

"Exploring the world of TypeScript Classes in combination with Webpack

If I create a TypeScript class with 10 methods and export a new instance of the class as default in one file, then import this class into another file (e.g. a React functional component) and use only one method from the class, how will it affect optimization? Can Webpack/Babel extract just the necessary code or will it include the entire class, resulting in unused code?

Would it be more efficient to avoid using classes and instead export each function individually?

My objective is to reduce exported bundle size and minimize Lighthouse warnings about unused JavaScript.

javascript typescript webpack babeljs web-vitals

Answer 1

Answer №1

Many tools for tree shaking, including Webpack, operate by analyzing the tree structure of ES6 imports and exports to eliminate unused exports.

Consider the following example:

export class {
    myfunc1() { /* do stuff */ }
    myfunc2() { /* do stuff */ }
}

When using Webpack for tree shaking, if myFunc2 is being used, myFunc1 cannot be eliminated even if it's not used.

However, in this scenario, either function can be removed if unused:

export myFunc1 = () => { /* Do stuff */}
export myFunc2 = () => { /* Do stuff */}

In this situation, it is more beneficial for tree shaking (with Webpack) to group functions together in a file rather than using a class.

Answer 2

Many tools for tree shaking, including Webpack, operate by analyzing the tree structure of ES6 imports and exports to eliminate unused exports.

Consider the following example:

export class {
    myfunc1() { /* do stuff */ }
    myfunc2() { /* do stuff */ }
}

When using Webpack for tree shaking, if myFunc2 is being used, myFunc1 cannot be eliminated even if it's not used.

However, in this scenario, either function can be removed if unused:

export myFunc1 = () => { /* Do stuff */}
export myFunc2 = () => { /* Do stuff */}

In this situation, it is more beneficial for tree shaking (with Webpack) to group functions together in a file rather than using a class.

"Exploring the world of TypeScript Classes in combination with Webpack

Answer №1

Similar questions

issue with implementing the chart.js npm package

Jasmine encountered an error while trying to compare the same string: 'Expected the values to match.'

Transitioning from one provider to another and encountering the error message "Cannot read property prompt of undefined."

Saving the content of a div as a PDF

What is the best way to fix multiple dropdown menus opening simultaneously in Vue.js?

How to smoothly transition a div from one location to another using animations in an Ionic3-Angular4 application

Expanding URL path parameters in Angular's ui-routerWould you like to

steps for signing up and keeping the parameters current

What is the best way to trigger an onclick event for an input element with a type of "image"?

What is the best way to save information from an axios promise into my database on separate lines?

The function Jquery .stop does not exist

Guide on creating a square within an element using JavaScript

Positioning a div to the right of another div within a container (box)

The PHP file on the server is missing the mandatory "event" parameter for the EventSource

I am currently struggling with a Typescript issue that I have consulted with several individuals about. While many have found a solution by upgrading their version, unfortunately, it

What is the best way to handle multiple responses in Ajax within a single function?

Is it possible for the JavaScript DOM API to retrieve the exact casing of attribute and tag names?

Retrieve the value of a dynamically generated input element within a form object

Encountering a CORS issue specifically on the client side of a Next.js application when interacting with an API gateway

What methods are available to adjust the header color on various pages?