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SheetJS 2023-10-20 05:35:44 -04:00
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---
title: Bundling Sheets with ESBuild
sidebar_label: ESBuild
pagination_prev: demos/index
pagination_next: demos/grid/index
sidebar_position: 4
---
import current from '/version.js';
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
import CodeBlock from '@theme/CodeBlock';
[ESBuild](https://esbuild.github.io/) is a fast module bundler for JavaScript.
It combines scripts and libraries into simple scripts for browsers and NodeJS.
[SheetJS](https://sheetjs.com) is a JavaScript library for reading and writing
data from spreadsheets.
This demo uses ESBuild and SheetJS to export data. We'll explore two workflows:
- ["Browser"](#browser) explores how to import SheetJS libraries in a script and
bundle with ESBuild for browser use.
- ["NodeJS"](#nodejs) explores how to import SheetJS libraries in a script and
bundle with ESBuild for NodeJS use.
:::info pass
This demo focuses on integration details with the ESBuild bundler.
The demos follow the ["Export Tutorial"](/docs/getting-started/examples/export).
The tutorial covers SheetJS library usage.
:::
:::note
This demo was last tested on 2023 October 19 against esbuild `0.19.5`
:::
## Integration Details
[The "Frameworks" section](/docs/getting-started/installation/frameworks) covers
installation with Yarn and other package managers.
## Browser
ESBuild will bundle the SheetJS ECMAScript Module build:
```js
import { read, utils, writeFileXLSX } from 'xlsx';
```
:::note pass
The `xlsx.mjs` source file uses a subset of ES6 that `esbuild` understands and
is able to transpile for older browsers.
:::
Assuming the primary source file is `in.js`, the following command will bundle
the script and generate `out.js`:
```bash
npx -y esbuild@0.19.5 in.js --bundle --outfile=out.js
```
### Browser Demo
0) Prepare a blank project:
```bash
mkdir sheetjs-esbrowser
cd sheetjs-esbrowser
npm init -y
```
1) Install the tarball using a package manager:
<Tabs groupId="pm">
<TabItem value="npm" label="npm">
<CodeBlock language="bash">{`\
npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="pnpm" label="pnpm">
<CodeBlock language="bash">{`\
pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="yarn" label="Yarn" default>
<CodeBlock language="bash">{`\
yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
</Tabs>
2) Download [`esbrowser.js`](pathname:///esbuild/esbrowser.js) and move to the
project folder:
```bash
curl -LO https://docs.sheetjs.com/esbuild/esbrowser.js
```
3) Create a small HTML page that loads the script. Save to `index.html`:
```html title="index.html"
<body><script src="esb.browser.js"></script></body>
```
4) Create bundle:
```bash
npx -y esbuild@0.19.5 esbrowser.js --bundle --outfile=esb.browser.js
```
5) Start a local HTTP server:
```bash
npx http-server .
```
Access the displayed URL (typically `http://localhost:8080`) with a web browser.
It should attempt to download `Presidents.xlsx`
## NodeJS
ESBuild will bundle the SheetJS ECMAScript Module build:
```js
import { read, utils, write } from 'xlsx';
```
:::caution pass
To read and write files on the local filesystem using the SheetJS `readFile` and
`writeFile` methods[^1], the `fs` module must be manually added:
```js
import { set_fs, readFile } from 'xlsx';
import * as fs from 'fs';
set_fs(fs);
/* read pres.numbers in the same directory as the script */
const wb = readFile("pres.numbers");
```
:::
Assuming the primary source file is `in.js`, the following command will bundle
the script for NodeJS and generate `out.js`:
```bash
npx -y esbuild@0.19.5 in.js --bundle --platform=node --outfile=out.js
```
### NodeJS Demo
:::info pass
This demo script uses `fetch` and requires Node 18+.
:::
0) Prepare a blank project:
```bash
mkdir sheetjs-esbnode
cd sheetjs-esbnode
npm init -y
```
1) Install the tarball using a package manager:
<Tabs groupId="pm">
<TabItem value="npm" label="npm">
<CodeBlock language="bash">{`\
npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="pnpm" label="pnpm">
<CodeBlock language="bash">{`\
pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="yarn" label="Yarn" default>
<CodeBlock language="bash">{`\
yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
</Tabs>
2) Download [`esbnode.js`](pathname:///esbuild/esbnode.js) and move to the
project folder:
```bash
curl -LO https://docs.sheetjs.com/esbuild/esbnode.js
```
3) Create bundle:
```bash
npx -y esbuild@0.19.5 esbnode.js --bundle --platform=node --outfile=esb.node.js
```
4) Run the bundle:
```bash
node esb.node.js
```
The process will generate `Presidents.xlsx` in the project directory. Open the
file in a spreadsheet editor.
[^1]: The SheetJS [`readFile`](/docs/api/parse-options) and [`writeFile`](/docs/api/write-options) methods use the NodeJS `fs` module when available. It is not automatically loaded in the ECMAScript Module builds.

@ -111,7 +111,9 @@ _cb = function(evt) { /* ... do work here ... */ };
:::caution pass
While SystemJS works in NodeJS, the built-in `require` should be preferred.
**It is strongly recommended to use the NodeJS `require` method when possible.**
This demo is relevant for legacy projects that use the SystemJS NodeJS loader.
:::

@ -209,187 +209,9 @@ Integration details are included [in the "AMD" installation](/docs/getting-start
Complete Examples are included [in the "Dojo" demo](/docs/demos/frontend/legacy#dojo-toolkit)
#### esbuild
## esbuild
The `xlsx.mjs` source file uses a subset of ES6 that `esbuild` understands and
is able to transpile for older browsers.
Both the `node` and `browser` platforms work out of the box.
<details><summary><b>Complete Example</b> (click to show)</summary>
:::note
This demo was last tested on 2023 May 07 against esbuild `0.17.18`
:::
<Tabs>
<TabItem value="browser" label="Browser">
1) Install the tarball using a package manager:
<Tabs groupId="pm">
<TabItem value="npm" label="npm">
<CodeBlock language="bash">{`\
npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="pnpm" label="pnpm">
<CodeBlock language="bash">{`\
pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="yarn" label="Yarn" default>
<CodeBlock language="bash">{`\
yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
</Tabs>
2) Save the following to `esbrowser.js`:
```js title="esbrowser.js"
// highlight-next-line
import { utils, version, writeFileXLSX } from 'xlsx';
(async() => {
/* fetch JSON data and parse */
const url = "https://sheetjs.com/data/executive.json";
const raw_data = await (await fetch(url)).json();
/* filter for the Presidents */
const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));
/* flatten objects */
const rows = prez.map(row => ({
name: row.name.first + " " + row.name.last,
birthday: row.bio.birthday
}));
/* generate worksheet and workbook */
const worksheet = utils.json_to_sheet(rows);
const 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 */
const max_width = rows.reduce((w, r) => 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");
})();
```
3) Create a small HTML page that loads the script. Save to `index.html`:
```html title="index.html"
<body><script src="esb.browser.js"></script></body>
```
4) Create bundle:
```bash
npx esbuild@0.17.18 esbrowser.js --bundle --outfile=esb.browser.js
```
5) Start a local HTTP server, then go to `http://localhost:8080/`
```bash
npx http-server .
```
</TabItem>
<TabItem value="nodejs" label="NodeJS">
1) Install the tarball using a package manager:
<Tabs groupId="pm">
<TabItem value="npm" label="npm">
<CodeBlock language="bash">{`\
npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="pnpm" label="pnpm">
<CodeBlock language="bash">{`\
pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
<TabItem value="yarn" label="Yarn" default>
<CodeBlock language="bash">{`\
yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>
</TabItem>
</Tabs>
2) Save the following to `esbnode.js`:
```js title="esbnode.js"
// highlight-next-line
import { set_fs, utils, version, writeFile } from 'xlsx';
// highlight-next-line
import * as fs from 'fs';
// highlight-next-line
set_fs(fs);
(async() => {
/* fetch JSON data and parse */
const url = "https://sheetjs.com/data/executive.json";
const raw_data = await (await fetch(url)).json();
/* filter for the Presidents */
const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));
/* flatten objects */
const rows = prez.map(row => ({
name: row.name.first + " " + row.name.last,
birthday: row.bio.birthday
}));
/* generate worksheet and workbook */
const worksheet = utils.json_to_sheet(rows);
const 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 */
const max_width = rows.reduce((w, r) => Math.max(w, r.name.length), 10);
worksheet["!cols"] = [ { wch: max_width } ];
/* create an XLSX file and try to save to Presidents.xlsx */
writeFile(workbook, "Presidents.xlsx");
})();
```
3) Create bundle:
```bash
npx esbuild@0.17.18 esbnode.js --bundle --platform=node --outfile=esb.node.js
```
4) Run the bundle:
```bash
node esb.node.js
```
</TabItem>
</Tabs>
</details>
:::note pass
Bundling raw data is supported using the `binary` loader. For more advanced
content workflows, [ViteJS](/docs/demos/static/vitejs) is the recommended tool.
:::
**[The exposition has been moved to a separate page.](/docs/demos/frontend/bundler/esbuild)**
## Parcel

@ -121,7 +121,7 @@ This demo was tested in the following deployments:
| Architecture | Git Commit | Date |
|:-------------|:-----------|:-----------|
| `darwin-x64` | `c3ead3f` | 2023-08-26 |
| `darwin-arm` | `c3ead3f` | 2023-08-26 |
| `darwin-arm` | `c3ead3f` | 2023-10-19 |
| `win10-x64` | `c3ead3f` | 2023-08-26 |
| `linux-x64` | `c3ead3f` | 2023-10-11 |
@ -308,10 +308,9 @@ clang: error: no such file or directory: '/usr/local/opt/icu4c/lib/libicudata.a'
This was fixed by creating a symbolic link:
```bash
cd /usr/local
sudo mkdir -p opt
cd opt
sudo ln -s /opt/homebrew/opt/icu4c
sudo mkdir -p /usr/local/opt
sudo ln -s /opt/homebrew/opt/icu4c /usr/local/opt
make
```
:::

@ -118,7 +118,7 @@ in the [issue tracker](https://git.sheetjs.com/sheetjs/docs.sheetjs.com/issues)
- [`browserify`](/docs/demos/frontend/bundler#browserify)
- [`bun`](/docs/demos/frontend/bundler#bun)
- [`esbuild`](/docs/demos/frontend/bundler#esbuild)
- [`esbuild`](/docs/demos/frontend/bundler/esbuild)
- [`parcel`](/docs/demos/frontend/bundler#parcel)
- [`requirejs`](/docs/demos/frontend/bundler/requirejs)
- [`rollup`](/docs/demos/frontend/bundler#rollup)

@ -0,0 +1,37 @@
import { set_fs, utils, writeFile } from 'xlsx';
import * as fs from 'fs';
set_fs(fs);
(async() => {
/* fetch JSON data and parse */
const url = "https://sheetjs.com/data/executive.json";
const raw_data = await (await fetch(url)).json();
/* filter for the Presidents */
const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));
/* sort by first presidential term */
prez.forEach(row => row.start = row.terms.find(term => term.type === "prez").start);
prez.sort((l,r) => l.start.localeCompare(r.start));
/* flatten objects */
const rows = prez.map(row => ({
name: row.name.first + " " + row.name.last,
birthday: row.bio.birthday
}));
/* generate worksheet and workbook */
const worksheet = utils.json_to_sheet(rows);
const 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 */
const max_width = rows.reduce((w, r) => Math.max(w, r.name.length), 10);
worksheet["!cols"] = [ { wch: max_width } ];
/* create an XLSX file and try to save to Presidents.xlsx */
writeFile(workbook, "Presidents.xlsx");
})();

@ -0,0 +1,35 @@
import { utils, writeFileXLSX } from 'xlsx';
(async() => {
/* fetch JSON data and parse */
const url = "https://sheetjs.com/data/executive.json";
const raw_data = await (await fetch(url)).json();
/* filter for the Presidents */
const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));
/* sort by first presidential term */
prez.forEach(row => row.start = row.terms.find(term => term.type === "prez").start);
prez.sort((l,r) => l.start.localeCompare(r.start));
/* flatten objects */
const rows = prez.map(row => ({
name: row.name.first + " " + row.name.last,
birthday: row.bio.birthday
}));
/* generate worksheet and workbook */
const worksheet = utils.json_to_sheet(rows);
const 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 */
const max_width = rows.reduce((w, r) => 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");
})();