Import Cost

"Import Cost" is one of the extensions for Visual Studio Code, which measures the size of JavaScript and TypeScript modules used in the code and displays the additional bytes added when importing those modules. This allows developers to identify unnecessary large modules and optimize code bundle sizes for better performance.

Usage

  1. After installing the extension and opening a project, when you import a module in the code, the byte size of that module is automatically displayed as a code comment.

  2. Hover over the code line where the module is imported, and Import Cost information will be displayed. This information includes the module's size and the additional bytes loaded for that module.


Installation Guide

"Import Cost" is a Visual Studio Code extension that is useful for developers to understand module sizes in their code and improve performance. However, it's important to determine its necessity based on the project's characteristics before using it.

  1. Launch Visual Studio Code.

  2. Click on the "Extensions" icon (square icon) in the left sidebar.

  3. Enter "Import Cost" in the search bar and find the corresponding extension from the search results list.

  4. Click the "Install" button to install the extension.

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Advantages

Description

  • Name
    Performance Optimization
    Type
    Advantage
    Description

    Using unnecessarily large modules can lead to longer loading times for web applications. With Import Cost, you can identify and optimize large modules for better performance.

  • Name
    Bundle Size Analysis
    Type
    Advantage
    Description

    Predicting the size of the code bundle in advance can enhance the user experience during application delivery.

  • Name
    Resource Management
    Type
    Advantage
    Description

    Managing the sizes of modules used in projects can optimize resource usage in applications.

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Disadvantages

Description

  • Name
    Limited Information Provision
    Type
    Disadvantage
    Description

    Import Cost provides only the size of modules, thus not offering information about the complexity of modules or other performance-related details.

  • Name
    Limited Relevance
    Type
    Disadvantage
    Description

    It might not be a necessary tool for every project, and its applicability might be challenging in all situations.

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