component-util.ts

Overview

The component-util.ts file provides utility functions designed to assist with common component-related operations in the application. Currently, it includes a function that simplifies the transformation of an array of strings into a format suitable for select/dropdown UI components. This utility helps standardize the options structure across the application, improving code reusability and maintainability.

Functions

buildSelectOptions

export function buildSelectOptions(list: Array<string>): Array<{ label: string; value: string }>

Description

Transforms an array of strings into an array of objects with label and value properties. This format is commonly used for select or dropdown components, where each option requires a display label and a corresponding value.

Parameters

• list (Array<string>): An array of strings representing raw option values.

Returns

• Array<{ label: string; value: string }>: A new array where each string from the input list is converted into an object with identical label and value properties.

Usage Example

import { buildSelectOptions } from './component-util';

const fruits = ['Apple', 'Banana', 'Cherry'];
const selectOptions = buildSelectOptions(fruits);

/*
selectOptions will be:
[
  { label: 'Apple', value: 'Apple' },
  { label: 'Banana', value: 'Banana' },
  { label: 'Cherry', value: 'Cherry' }
]
*/

Implementation Details

The function uses the native JavaScript Array.prototype.map method to iterate over the input array. Each string element is transformed into an object with two identical properties: label and value. This design assumes that the display label and the underlying value are the same string, which is a common pattern for simple select options.

Interaction with Other System Parts

• UI Components: This utility is intended to be imported and used by UI components that render select or dropdown inputs. It standardizes option formatting, which ensures consistency across different parts of the application.

• Form Handling: When forms require select inputs, using this function helps map raw data sources (like lists of strings from API responses or static data) into the expected shape for UI libraries or custom components.

Mermaid Diagram

flowchart TD
    A[Input: Array<string>] --> B[buildSelectOptions]
    B --> C[Output: Array<{ label: string; value: string }>]

This flowchart illustrates the simple transformation from an array of strings into the structured array of option objects performed by the buildSelectOptions function.

Summary

component-util.ts is a lightweight utility module that currently offers a focused, reusable function for preparing select/dropdown options. Its clear and concise implementation supports consistent UI development practices and can be easily extended with additional component-related utilities in the future.