react-text-renderer-components

! MANAGE YOUR DATA, NOT THEIR STRING REPRESENTATION !

This is a zero-dependencies component library providing a set of (pure) text rendering utility components. Those components are accepting common and custom data/field types as input and are rendering their text representation automatically.

e.g. to render the text corresponding to a DateOfBirth field (Date type) within an html-table cell, use a simple <td><DateRenderer value={person.DateOfBirth} /></td> statement.

Storybook, Changelog and Release note Documentation

storybook

Overall Storybook Documentation of this component library.

This documentation includes a test report and a coverage report.

Changelog and Release note

Please read the CHANGELOG (all changes since the beginning) and RELEASENOTE (what's new since the last version) documents according to your needs.

Available renderer components

• DateRenderer component (Storybook → DateRenderer)
• TimeRenderer component (Storybook → TimeRenderer)
• DateTimeRenderer component (Storybook → DateTimeRenderer)
• WeekRenderer component (Storybook → WeekRenderer)

more components to come... (see the ToDos below)

Features

• typesafe handling of input values = use your own input value types!
• text formating is implemented within the text-renderer react components
• (automatic) rendering of Date, Time and DateTime (w/ optional custom format) localized text representations
• render formated text as-is i.e. as "pure" text (e.g. new Date("06.10.2024") rendered as 06.10.2024) or
• render formated text within a <span></span> tag (e.g. new Date("06.10.2024") rendered as <span>06.10.2024</span>)
• implement your own (reusable) Text Renderer components easily (see below)
• efficient and type safe formating of Date values using the Intl.DateTimeFormat(..) (see "Notes on formating DateTime values" below)
• define once, reuse everywhere
• use the CustomRenderer component to render any type of data using a simple 'mutation' function of your own (not implemented yet).

more features to come (see the ToDos below)

Installation

The package containing the Text Renderer Components will be available for installation using either the NPM package registry or the Github Packages as registered directly within the Github repository of the library.

install from the "npm registry"

You may use any package manager cli such as "npm" or "yarn" in order to download and install the library in your project.

1. From the root folder of your project (containing the package.json file of the project), run the following command within any suitable shell (powershell, bash...):

   npm install react-text-renderer-components
   
   # or 
   
   yarn install react-text-renderer-components

2. import any component you'd like to use and insert the corresponding tag and options into your rendering procedure:

   import { DateRenderer } from '@khatastroffik/react-text-renderer-components';
   
   export const Today = () => {
       return <DateRenderer value={new Date()} />
   }

That's it!

Tech Stack

• parcel, react, typeScript
• tsc, jest, eslint, husky, lint-staged, rimraf, storybook
• class inheritance, modification of the type of an inherited react component property, DRY, SoC, localization, injection
• commit message guideline, semantic versioning, coverage report
• github pages, github packages, npm package registry

Note: The "class inheritance" is intentionally used here!

This design allows to avoid repetitions, reduce the size of the compiled code using this library, ease maintenance of the components. It also simplify type checking (potentially complex) data/value types and separate the user interface from the "business logic" of the different renderer classes etc. It also permit to validate/sanitize/escape the rendered text centraly, regardless of the implemented Text Renderer classes.

ToDo list

Implement supplemental renderer components

• ✅ WeekRenderer component
• ⬛ QuarterRenderer component
• ⬛ TextRenderer component (with text manipulation like UpperCase, LowerCase, Replace...)
• ⬛ CurrencyRenderer component
• ⬛ CustomRenderer component i.e the text formating function may be provided from the parent application/component using the CustomRenderer.

Add "common" features to the AbstractRenderer

• ⬛ tooltip property
• ⬛ className property - for spanned text
• ⬛ styleproperty - for spanned text
• ⬛ ellipsis css formating - for spanned text
• ⬛ Aria related properties - for spanned text
• ⬛ Validate and sanitize/escape the generated/formated stringc prior rendition for Custom Text Renderer classes.

Improvements

• ✅ cache usage of Intl.DateTimeFormat(..) within the Date based renderers
• ✅ add a timeZone property to the Date based renderers
• ✅ document "UTC" requirement on Date values
• ⬛ Add numberingSystem option to WeekRenderer component (01/2026 is ༠༡/༢༠༢༦ using Tibetan digits → siehe standard Unicode numeral systems)

project enhancements

• ⬛ migrate this todo list to the github issues
• ✅ add storybook stories for each component
• ✅ add test report and coverage report to storybook documentation
• ✅ add a github action in order to deploy the package to npm
• ✅ add a github action in order to deploy the package as github package within the repository
• ✅ add a github action in order to build and publish the storybook static page as github page of the repository
• ✅ provide an example for implementing custom components derived from the AbstractRenderer component
• ✅ implement automatic changelog and release note creation

How to implement your own, custom "renderer" using this library?

it is very easy to implement new classes derived from the AbstractRenderer class:

• such derived classes just need to provide an implementation of the abstract getFormatedText(): string method.
• Optionally, the type of the input value property (default to string) can be set/defined using a simplistic interface declaration.
• Furthermore, you may define additional properties for the derived react component.

Please find some stylized use cases below.

use case #1: create a component using your own "text formating" functionality

A class as simple as:

export class SpecialRenderer extends AbstractRenderer {
    protected getFormatedText(): string {       
        return this.value ? `⇒ ${this.value} ⇐` : "n/a";
    }
}

may be used per

<SpecialRenderer value="Dramatic-Weasel" />
<SpecialRenderer value="Gentle-Breakdown" pure />
<SpecialRenderer value="" />

and would output

<span>&rArr; Dramatic-Weasel &lArr;</span>
&rArr; Gentle-Breakdown &lArr;
<span>n/a</span>

use case #2: defining a custom type for the input value property

in order to define a specific/custom type for the value passed to the renderer as a react component property, use the following approach:

import { AbstractRenderer, IAbstractRendererProps, ModifyValueType } from "./AbstractRenderer";

// 1) define your custom data type
export interface Person {
    name: string;
    email: number;
}

// 2) override the default (string) type of the "value" property defined within the AbstractRenderer
export type IPersonRendererProps = ModifyValueType<IAbstractRendererProps, { value: Person }>;

// 3) define a custom rendere class using the specific data type and the custom property type as defined above
export class PersonRenderer extends AbstractRenderer<Person, IPersonRendererProps> {
    protected getFormatedText(): string {
        return this.value ? `${this.value.name} (${this.value.email})` : "";
    }
}

use case #3: Add properties to the renderer class

To enhance the properties of the renderer class i.e to add properties to be passed to the renderer, do apply this technic:

export interface IIconizedRendererProps extends IAbstractRendererProps {
    icon: string;
}

export class IconizedRenderer extends AbstractRenderer<string, IIconizedRendererProps> {
    protected getFormatedText(): string {
        // do whatever you like with the additional property
        return this.value ?? this.icon;
    }
}

use case #4: Add properties and modify the type of the input value property

you may also like to combine both modifications i.e. overriding the value type definition and adding properties...

export interface ISpecialValueType {
    timestamp: Date;
    data: Array<{ foo: string, baz: string };
}

export interface ISpecialRendererProps extends ModifyValueType<IAbstractRendererProps, { value: ISpecialValueType }> {
    additionalReactComponentProperty: string;
}

export class VerySpecialRenderer extends AbstractRenderer<ISpecialValueType, ISpecialRendererProps> {
    protected getFormatedText(): string {
        // use `this.props.additionalReactComponentProperty` wherever needed
        // use 'this.value' of type 'ISpecialValueType' e.g. 'this.value.timestamp' or 'this.value.data.length' etc.
        return "Tremendous! Unglaublich! Formidable! Khatastroffik!";
    }
}

Notes on formating DateTime values

A standard approach consists in calling one of the formating methodes of the Date class, such as toLocaleString(...) and similar.

There's a potential negative impact of using this approach when dealing with large amount of data i.e. a lot of "to-be-formated" date values, as stated in the MSDN documentation:

Every time toLocaleString is called, it has to perform a search in a big database of localization strings, which is potentially inefficient. When the method is called many times with the same arguments, it is better to create a Intl.DateTimeFormat object and use its format() method, because a DateTimeFormat object remembers the arguments passed to it and may decide to cache a slice of the database, so future format calls can search for localization strings within a more constrained context.

Hence, this library is using the DateTimeFormat object and its format()method to generate localized and formated output (according to the renderer component properties) as per:

• DateRenderer is using a { dateStyle: "medium" } format and the optionally provided locale property (fallback to system locale if missing). The Output is similar to 06.10.2024 or 10/06/2024 (depending on the locale).

• TimeRenderer is using a { timeStyle: "medium" } format and the optionally provided locale property (fallback to system locale if missing). The Output is similar to 19:25:55 or 7:25:55 PM (depending on the locale).

• DateTimeRenderer is using a { dateStyle: "short", timeStyle: "short" } format and the optionally provided locale property (fallback to system locale if missing). The Output isdisplaying both the date and time part and is similar to 07.10.24, 19:25 or 10/7/24, 7:25 PM (depending on the locale).

Jest & Testing

npm install -D jest @testing-library/react ts-jest @types/jest ts-node @testing-library/jest-dom jest-environment-jsdom @testing-library/user-event

Some sources of inspiration

Tests

• https://jestjs.io/docs/tutorial-react
• https://dev.to/teyim/effortless-testing-setup-for-react-with-vite-typescript-jest-and-react-testing-library-1c48
• https://www.pluralsight.com/resources/blog/guides/how-to-test-react-components-in-typescript

Storybook

• https://storybook.js.org/addons/@storybook/addon-docs

• https://github.com/storybookjs/storybook/blob/master/addons/docs/docs/mdx.md

• https://storybook.js.org/docs/writing-docs/autodocs#customize-the-docs-container

• https://storybook.js.org/docs/api/doc-blocks/doc-block-useof

• https://storybook.js.org/addons/@whitespace/storybook-addon-html

• https://storybook.js.org/addons/storybook-addon-storyout

• https://storybook.js.org/addons/@storybook/addon-console

Shiel.io

• https://shields.io/badges/git-hub-actions-workflow-status
• https://shields.io/badges/git-hub-issues-or-pull-requests
• https://shields.io/badges/git-hub-license
• https://shields.io/badges/git-hub-package-json-dynamic-branch
• https://shields.io/badges/git-hub-package-json-dev-peer-optional-dependency-version
• https://shields.io/badges/npm-package-minimized-gzipped-size
• https://github.com/inttter/md-badges
• https://shields.io/badges/dynamic-json-badge

Divers

• https://www.pluralsight.com/resources/blog/guides/how-to-return-plain-text-from-a-react-component
• https://www.30secondsofcode.org/js/s/day-week-month-quarter-of-year/
• https://weeknumber.com/how-to/javascript
• https://weeknumber.com/how-to/iso-week-numbers
• https://www.calendar-week.org/calendar-weeks/2026
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/NumberFormat#syntax
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getNumberingSystems#supported_numbering_system_types