README

@saphe/react-table

A lightweight, declarative, type-safe table engine for React apps.

Features

✅ CommonJS and ES Modules support,
🤩 Easily sort by columns,
⏭️ Built-in pagination logic,
🔍 Exact and fuzzy text search with match highlighting out-of-the-box,
👁️ Toggle visibility on columns using the provided utility functions,
⚖️ Lightweight; 6.3 kB minified + gzipped (esm and cjs combined) and only 2 dependencies total,
🚀 Efficient due to usage of internal memoization and effect order,
🎨 Headless; you decide the table style, the hook handles the logic.

Roadmap
Getting Started
Examples
Docs
Troubleshooting
- Invalid React Child
- Maximum Update Depth

Roadmap

Rename hidden to visibility
Remove invert from sorting functions
Update default SortOrder
Custom order of SortOrder enum (global and local)
Expose state interfaces
Does pagination start at 1 or 0? (answer: 0)
Do a performance analysis
Check if the code would be cleaner/faster using useReducer (probably)
Search debounce
RegEx search mode (?)
Add support for table styling packs
API data fetching functionality for sort, search, and pagination
Plugin support

Getting Started

Install using yarn:

yarn add @saphe/react-table

or using npm:

npm install @saphe/react-table

Examples

Docs

Basic Usage

The following code shows a basic functional React component that implements a table using the useTable hook. Feel free to open the Basic Example and type along to see the IntelliSense and TypeChecking do it's thing! It is also possible to define ColumnTypes, columns and data in-line with the useTable function, but here they're shown separately to demonstrate the use of the Columns<T> and Data<T> types.

import React, { ReactElement } from 'react';
import useTable, { Columns, Data } from '@saphe/react-table';

// Define column types of this table
interface ColumnTypes {
  language: string;
  stronglyTyped: boolean | null;
  jobs: { amount: number; salary: number };
}

export default function ProgrammingLanguagesTable(): ReactElement {
  
  // Column configuration of the table
  const columns: Columns<ColumnTypes> = {

    // Pass empty object to accept all default values
    language: {},
    
    // Set default value for nullable column type
    stronglyTyped: { defaultValue: false },
    jobs: {
      
      // Define custom label for column header
      label: 'Job Stats',

      // Define how the `jobs` object should be stringified. If skipped, it shows `[object Object]`
      stringify: ({ amount, salary }) => {
        const sep = (n: number) => String(n).replace(/\B(?=(\d{3})+(?!\d))/g, ',');
        return `${sep(amount)} jobs with ${sep(salary)} salary`;
      },
    },
  };

  // Define the data shown in the table
  // Data from: https://www.northeastern.edu/graduate/blog/most-popular-programming-languages/
  const data: Data<ColumnTypes> = [
    { language: 'Python', jobs: { amount: 19000, salary: 120000 } },
    { language: 'JavaScript', jobs: { amount: 24000, salary: 118000 } },
    { language: 'Java', jobs: { amount: 29000, salary: 104000 }, stronglyTyped: true },
    { language: 'C#', jobs: { amount: 18000, salary: 97000 }, stronglyTyped: true },
    { language: 'C', jobs: { amount: 8000, salary: 97000 }, stronglyTyped: true },
    { language: 'C++', jobs: { amount: 9000, salary: 97000 }, stronglyTyped: true },
    { language: 'GO', jobs: { amount: 1700, salary: 93000 }, stronglyTyped: true },
    { language: 'R', jobs: { amount: 1500, salary: 93000 } },
    { language: 'Swift', jobs: { amount: 1800, salary: 93000 }, stronglyTyped: true },
    { language: 'PHP', jobs: { amount: 7000, salary: 81000 } },
  ];

  // Use the hook and obtain the headless headers and rows
  const { headers, rows } = useTable(columns, data);

  // Use the headers and rows to display a table according to your own styling
  return (
    <table>
      <thead>
        <tr>
          {headers.map((header, i) => (
            <header.render key={i} />
          ))}
        </tr>
      </thead>
      <tbody>
        {rows.map((row, i) => (
          <tr key={i}>
            {row.cells.map((cell, j) => (
              <cell.render key={j} />
            ))}
          </tr>
        ))}
      </tbody>
    </table>
  );
}

Pagination

To enable pagination in your table, pass a number to the pageSize option through the options object of the useTable hook. You can now extract a paginationHelpers object from the useTable state with the following properties:

interface PaginationHelpers {
  /** Current page number (between 0 and `pageAmount - 1`) */
  page: number;
  /** Maximum size of the pages */
  pageSize: number;
  /** Amount of pages */
  pageAmount: number;
  /** Utility function to set the current page if possible */
  setPage: (pageNumber: number) => void;
  /** Utility function to skip to the last available page */
  setLastPage: () => void;
  /** Utility function to skip to the first available page */
  setFirstPage: () => void;
  /** Utility function to move to the next page if possible */
  nextPage: () => void;
  /** Whether or not there is a next page to go to */
  canNext: boolean;
  /** Utility function to move to the previous page if possible */
  prevPage: () => void;
  /** Whether or not there is a previous page to go to */
  canPrev: boolean;
}

You can then use these headless utilities to build your own pagination interface:

const { headers, rows, paginationHelpers } = useTable(columns, data, { pageSize: 10 });

return (
  <section>
    <Table {...{ headers, rows }} />

    <div>
      <button disabled={!paginationHelpers.canPrev} onClick={paginationHelpers.prevPage}>
        Previous page
      </button>

      <span>
        Page {paginationHelpers.page} of {paginationHelpers.pageAmount}
      </span>
      
      <button disabled={!paginationHelpers.canNext} onClick={paginationHelpers.nextPage}>
        Next page
      </button>
    </div>
  </section>
)

Dynamically and Statically Hiding Columns

You can statically hide columns by defining them as hidden: true in the column definition. If a column is statically hidden, then it is not present in the headers state array. You will need to use originalHeaders from the useTable state to access it.

You can dynamically hide columns using the visibilityHelpers object on the useTable state. It has the following properties:

interface VisibilityHelpers {
  /** Utility function to hide all hideable columns */
  hideAll: () => void;
  /** Utility function to show all showable columns */
  showAll: () => void;
}

You can then toggle column visibility using the toggleVisibility function in the headers.

If you want to make it impossible to hide a column, define it as unhideable: true in the column definition. An unhideable column does not have a toggleVisibility function.

const { headers, originalHeaders, rows, visibilityHelpers } = useTable(columns, data);

return (
  <section>
    <div>

      {/* Map over the original headers to create a checkbox-based dynamic column visibility UI element */}
      {originalHeaders.map((header, i) => (
        <label htmlFor={`visibilityCheckBox${i}`} key={i}>
          <input
            type="checkbox"
            name={`visibilityCheckBox${i}`}
            id={`visibilityCheckBox${i}`}
            
            {/* If `toggleVisibility` is undefined, then this column is `unhideable` */}
            disabled={!header.toggleVisibility}
            checked={!header.hidden}
            onChange={() => header.toggleVisibility && header.toggleHide()}
          />
          <span>{header.label}</span>
        </label>
      ))}
    </div>

    <button onClick={visibilityHelpers.showAll}>Show All</button>
    <button onClick={visibilityHelpers.hideAll}>Hide All</button>

    <Table {...{ headers, rows }} />
  </section>
)

Sorting by Columns

Sorting a column can be as simple as calling the toggleSort function on the header cell. This will cycle the column through 3 states by default: SortOrder.ASC, SortOrder.DESC, and SortOrder.UNSORTED, in that order. To house this logic, you can define a custom clickable header cell:

import React, { ReactElement } from 'react';
import { RenderHeadProps, SortOrder } from '@saphe/react-table';

export function SortableHeaderCell(props: RenderHeadProps): ReactElement {
  const getArrow = (order: SortOrder) => {
    switch (order) {
      case SortOrder.ASC:
        return '^';
      case SortOrder.DESC:
        return 'v';
      case SortOrder.UNSORTED:
        return '';
    }
  };

  return (
    <th onClick={() => props.toggleSort && props.toggleSort()}>
      {props.label} {getArrow(props.sortOrder)}
    </th>
  );
}

Then you can pass it to useTable using the options object, as well as a custom order of SortOrders.

const { headers, rows } = useTable(columns, data, { 
  style: { renderHead: SortableHeaderCell },
  // Omit `SortOrder.UNSORTED` at the end to loop the custom order
  sort: { order: [SortOrder.DESC, SortOrder.UNSORTED, SortOrder.ASC] },
});

return <Table {...{ headers, rows }} />

If you have a complex data object (not string, number or boolean), you can either turn off sorting for that column using the unsortable: true option in the column definition, or supply a custom sorting function using the sort option in the column definition. For examples on custom sorting functions, check the useSort hook in the GitHub repo.

Searching a Table

To enable table searching, extract from the useTable state a searchHelpers object with the following properties:

interface SearchHelpers {
  /** String which the table is being searched on */
  searchString: string;
  /** Utility function to set the search string */
  setSearchString: (value: string) => void;
  /** Total number of results after filtering by search string */
  searchResultCount: number;
}

If you wish to exclude a column from the search, set its unsearchable option to true.

To set the search mode from the default fuzzy search SearchMode.FUZZY to exact string matching SearchMode.EXACT, pass the desired search mode into the search.mode key of the options object.

If you want to highlight the matched text in the search results, you can pass in a custom component through the style.renderCell key of the options object which addresses the requirement. This custom component may use the matchedText prop from the RenderCellProps type as follows:

import React, { ReactElement } from 'react';
import { RenderCellProps } from '@saphe/react-table';

export function HighlightCell(props: RenderCellProps): ReactElement {
  return (
    <td>
      {props.matchedText.map(({ highlighted, value }, idx) => (
        <span key={idx} style={{ backgroundColor: highlighted ? '#f7d40a' : '#fff' }}>
          {value}
        </span>
      ))}
    </td>
  );
}

You can now use the headless utilities to build your own search input:

const { headers, rows, searchHelpers } = useTable(columns, data, { 
  search: { mode: SearchMode.FUZZY },
  style: { renderCell: HighlightCell },
});

return (
  <section>
    <div>
      <label htmlFor="searchTable">Search</label>
      <input
        type="text"
        autoComplete="off"
        name="searchTable"
        id="searchTable"
        placeholder="Search table..."
        value={searchHelpers.searchString}
        onChange={(e) => searchHelpers.setSearchString(e.target.value)}
      />
    </div>

    <Table {...{ headers, rows }} />
  </section>
)

Troubleshooting

Invalid React Child

If you encounter the Objects are not valid as a React child error, it means you are trying to make a custom cell and are directly rendering an object-type data value. React is not happy when you do that, you have to convert the object into a string first. There are two ways to do this:

The first is to use the default preconfigured cell and implement a stringify function in the column definition, like this:

interface ColumnTypes {
  objectColumn: { key1: string; key2: number };
}

export default function ObjectTable(): ReactElement {
  const { headers, rows } = useTable({
    objectColumn: { 
      // Stringify definition!
      stringify: ({ key1, key2 }) => `${key2}: ${key1}` 
    },
  }, [
    { key1: 'test value', key2: 10 },
    { key1: 'another value', key2: 3 },
  ]);

  return <Table {...{ headers, rows }} />
}

The second way is to define a custom cell function, and stringify the value in it, or to use the stringValue prop from RenderCellProps, which takes the column's stringify function into account.

export function ObjectCell(props: RenderCellProps): ReactElement {
  // Either to this:
  return (
    <td>{`${value.key2}: ${value.key1}`}</td>
  )

  // Or this (and define a top-level stringify function like in the previous code block)
  return (
    <td>{props.stringValue}</td>
  )
}

Maximum Update Depth

If you encounter the Maximum update depth exceeded error, it probably means that you're trying to render data that recursively triggers table re-renders, for instance: new Date(). There are two fixes for this error.

One is to wrap your data array and/or column definition in a useMemo hook before passing them to useTable, like this:

interface ColumnTypes {
  dateColumn: Date | null;
  dateRow: Date;
}

export default function DateTable(): ReactElement {
  const columns: Columns<ColumnTypes> = useMemo(() => ({
    dateColumn: { defaultValue: new Date() },
    dateRow: {},
  }), []);

  const data: Data<ColumnTypes> = useMemo(() => [
    { dateRow: new Date() },
  ], []);

  const { headers, rows } = useTable(columns, data);

  return <Table {...{ headers, rows }} />
}

The other fix is to define the data outside of the react component (only an option if your data is independent from the component state), like this:

interface ColumnTypes {
  dateColumn: Date | null;
  dateRow: Date;
}

const columns: Columns<ColumnTypes> = {
  dateColumn: { defaultValue: new Date() },
  dateRow: {},
};

const data: Data<ColumnTypes> = [{ dateRow: new Date() }];

export default function DateTable(): ReactElement {
  const { headers, rows } = useTable(columns, data);

  return <Table {...{ headers, rows }} />
}

@saphe/react-table

Usage no npm install needed!

README

@saphe/react-table

Features

Table of Contents

Roadmap

Getting Started

Examples

Docs

Basic Usage

Pagination

Dynamically and Statically Hiding Columns

Sorting by Columns

Searching a Table

Troubleshooting

Invalid React Child

Maximum Update Depth