docs.sheetjs.com/docz/docs/03-demos/01-frontend/19-bundler/09-browserify.md
2023-10-21 21:42:08 -04:00

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Bundling Sheets with Browserify Browserify demos/index demos/grid/index 9

import current from '/version.js'; import Tabs from '@theme/Tabs'; import TabItem from '@theme/TabItem'; import CodeBlock from '@theme/CodeBlock';

Browserify is a module bundler.

SheetJS is a JavaScript library for reading and writing data from spreadsheets.

This demo uses Browserify and SheetJS to export data. We'll explore how to add SheetJS to a site using Browserify and how to export data to spreadsheets.

:::note

This demo was last tested on 2023 October 21 against Browserify 17.0.0

:::

Integration Details

The "Frameworks" section covers installation with Yarn and other package managers.

After installing the SheetJS module in a Browserify project, require expressions can load relevant parts of the library.

var XLSX = require("xlsx");
// ... use XLSX ...

Browserify can also process require expressions in Web Worker scripts.

Complete Example

  1. Initialize a new project:
mkdir sheetjs-browserify
cd sheetjs-browserify
npm init -y
  1. Install the tarball using a package manager:
{`\ npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`} {`\ pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`} {`\ yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
  1. Save the following to index.js:
// highlight-next-line
const { utils, version, writeFileXLSX } = require('xlsx');

document.getElementById("xport").addEventListener("click", function() {
  /* fetch JSON data and parse */
  var url = "https://sheetjs.com/data/executive.json";
  fetch(url).then(function(res) { return res.json(); }).then(function(raw_data) {

    /* filter for the Presidents */
    var prez = raw_data.filter(function(row) { return row.terms.some(function(term) { return term.type === "prez"; }); });

    /* sort by first presidential term */
    prez.forEach(function(row) {
      row.start = row.terms.find(function(term) {
        return term.type === "prez";
      }).start
    });
    prez.sort(function(l,r) { return l.start.localeCompare(r.start); });

    /* flatten objects */
    var rows = prez.map(function(row) { return {
      name: row.name.first + " " + row.name.last,
      birthday: row.bio.birthday
    }; });

    /* generate worksheet and workbook */
    var worksheet = utils.json_to_sheet(rows);
    var workbook = utils.book_new();
    utils.book_append_sheet(workbook, worksheet, "Dates");

    /* fix headers */
    utils.sheet_add_aoa(worksheet, [["Name", "Birthday"]], { origin: "A1" });

    /* calculate column width */
    var max_width = rows.reduce(function(w, r) { return Math.max(w, r.name.length); }, 10);
    worksheet["!cols"] = [ { wch: max_width } ];

    /* create an XLSX file and try to save to Presidents.xlsx */
    writeFileXLSX(workbook, "Presidents.xlsx");
  });
});
  1. Bundle the scripts:
npx browserify app.js > browserify.js
  1. Spin up a local web server:
npx http-server
  1. Create a small HTML page that loads the script. Save to index.html:
<!DOCTYPE html>
<html lang="en">
  <head></head>
  <body>
    <h1>SheetJS Presidents Demo</h1>
    <button id="xport">Click here to export</button>
    <script src="./index.min.js"></script>
  </body>
</html>
  1. Start a local HTTP server and go to http://localhost:8080/
npx http-server .

Click on "Click here to export" to generate a file.