constant.ts

Overview

The constant.ts file defines an enumeration ChunkTextMode that provides two modes for representing chunked text data. This enum is used to specify how text chunks should be handled or displayed in the application, offering a clear, type-safe way to differentiate between showing the full text or a truncated (ellipsized) version.

By centralizing these text modes in an enum, the application can ensure consistency in referencing these modes across different modules or components, reducing the risk of errors from hard-coded string literals.

Contents

Enum: ChunkTextMode

export enum ChunkTextMode {
  Full = 'full',
  Ellipse = 'ellipse',
}

Description

The ChunkTextMode enum provides two distinct modes for chunk text handling:

• Full: Represents the mode where the entire text chunk is displayed or processed without truncation.

• Ellipse: Represents the mode where the text chunk is shortened, typically showing an ellipsis (...) to indicate truncation.

Usage

This enum is intended to be used wherever the application needs to specify or switch between different text chunk display modes, such as in UI components responsible for rendering text snippets or in processing logic handling text data.

Example Usage

import { ChunkTextMode } from './constant';

function renderTextChunk(text: string, mode: ChunkTextMode): string {
  if (mode === ChunkTextMode.Full) {
    return text;
  } else if (mode === ChunkTextMode.Ellipse) {
    return text.length > 100 ? text.substring(0, 97) + '...' : text;
  }
  return text;
}

// Usage
const mode = ChunkTextMode.Ellipse;
const chunk = "This is a very long text chunk that might need truncation for display purposes.";
console.log(renderTextChunk(chunk, mode)); 
// Output: "This is a very long text chunk that might need truncation for display purp..."

Implementation Details

• The enum uses string values ('full' and 'ellipse') instead of numeric values. This improves code readability and debugging, as the enum values are self-descriptive.

• Using an enum rather than plain strings helps with type safety and autocomplete support in TypeScript-aware editors.

Interaction with Other Parts of the System

While this file only contains the enum definition, its role is likely foundational within a text processing or UI rendering module:

• UI Components: Components that display text chunks can import ChunkTextMode to switch rendering strategies based on the selected mode.

• Text Processing Utilities: Functions that manipulate or format text chunks may use this enum to decide whether to truncate or display text fully.

• Configuration or State Management: The mode could be stored in application state or configuration to dynamically control text chunk presentation.

Because it is a simple constant definition, it acts as a shared source of truth for chunk text modes across various parts of the application.

Diagram

classDiagram
    class ChunkTextMode {
        <<enumeration>>
        +Full: 'full'
        +Ellipse: 'ellipse'
    }

Summary

• constant.ts defines a single enum ChunkTextMode with two values: Full and Ellipse.

• It is used to specify how text chunks are displayed or processed (either fully or with truncation).

• The enum improves code clarity, type safety, and consistency across the codebase.

• Its string values make debugging and reading code easier.

• This file acts as a foundational utility in text rendering or processing workflows within the system.