authorization.ts

Overview

The authorization.ts file is a simple utility module that defines and exports three string constants related to user authorization and authentication. These constants are intended to be used as keys or identifiers for managing authorization headers, authentication tokens, and user information within an application, typically in HTTP requests or local storage.

This file provides a centralized location for these commonly used string values, helping to avoid hard-coded strings throughout the codebase, which improves maintainability and reduces the risk of typos or inconsistencies.

Constants

Authorization

• Type: string

• Value: 'Authorization'

• Description:
  This constant represents the HTTP header name typically used to pass authorization credentials (such as bearer tokens) in API requests.

• Usage Example:

  import { Authorization } from './authorization';
  
  fetch('/api/data', {
    headers: {
      [Authorization]: 'Bearer some-access-token'
    }
  });
  

Token

• Type: string

• Value: 'token'

• Description:
  This constant is used as a key to store or retrieve the authentication token, often from web storage like localStorage or sessionStorage.

• Usage Example:

  import { Token } from './authorization';
  
  // Save token
  localStorage.setItem(Token, 'some-access-token');
  
  // Retrieve token
  const token = localStorage.getItem(Token);
  

UserInfo

• Type: string

• Value: 'userInfo'

• Description:
  This constant is used as a key for storing or accessing user-related information in storage or application state.

• Usage Example:

  import { UserInfo } from './authorization';
  
  // Save user info as JSON string
  localStorage.setItem(UserInfo, JSON.stringify({ id: 123, name: 'Alice' }));
  
  // Retrieve and parse user info
  const userInfo = JSON.parse(localStorage.getItem(UserInfo) || '{}');
  

Implementation Details

• The file exports only string constants with fixed values.

• These constants are intended to be imported and reused throughout the application wherever these specific keys or header names are needed.

• Centralizing these string literals avoids duplication and potential inconsistencies.

Interaction with Other Parts of the System

• This file is typically imported by modules handling HTTP requests, authentication workflows, or user session management.

• For example:

  • API client or service modules use Authorization to set HTTP request headers.

  • Authentication modules use Token to store and retrieve tokens.

  • User profile or session modules use UserInfo to manage user details in state or storage.

• It acts as a shared reference point for key names related to authorization and user data.

Diagram

flowchart TB
    A[authorization.ts] --> B["Authorization: 'Authorization'"]
    A --> C["Token: 'token'"]
    A --> D["UserInfo: 'userInfo'"]

Summary

authorization.ts is a lightweight utility file exporting three key constants that standardize string values used throughout the application for authorization headers, tokens, and user information keys. By importing these constants, developers ensure consistent usage across authentication and API communication modules.