docs.sheetjs.com/docz/docs/02-getting-started/01-installation/03-nodejs.md

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import current from '/version.js';

# NodeJS

import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';

Tarballs are available on <https://cdn.sheetjs.com>.

<div>Each individual version can be referenced using a similar URL pattern.<br/>
<a href={`https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}>https://cdn.sheetjs.com/xlsx-{current}/xlsx-{current}.tgz</a> is the URL for {current}</div>

## Installation

Tarballs can be directly installed using a package manager:

<Tabs>
  <TabItem value="npm" label="npm">
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
  <TabItem value="pnpm" label="pnpm">
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
  <TabItem value="yarn" label="Yarn" default>
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
</Tabs>

:::warning

Older releases are technically available on the public npm registry as `xlsx`,
but the registry is out of date.  The latest version on that registry is 0.18.5

This is a known registry bug

<https://cdn.sheetjs.com/> is the authoritative source for SheetJS scripts.

For existing projects, the easiest approach is to uninstall and reinstall:

<Tabs>
  <TabItem value="npm" label="npm">
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
npm rm --save xlsx
npm i --save https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
  <TabItem value="pnpm" label="pnpm">
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
pnpm rm xlsx
pnpm install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
  <TabItem value="yarn" label="Yarn" default>
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
yarn remove xlsx
yarn add https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
</Tabs>

:::

### Vendoring

For general stability, "vendoring" modules is the recommended approach:

<div>1) Download the tarball (<code parentName="pre">xlsx-{current}.tgz</code>) for the desired version. The current
   version is available at <a href={`https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}>https://cdn.sheetjs.com/xlsx-{current}/xlsx-{current}.tgz</a></div><br/>

2) Create a `vendor` subfolder at the root of your project and move the tarball
   to that folder.  Add it to your project repository.

3) Install the tarball using a package manager:

<Tabs>
  <TabItem value="npm" label="npm">
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
npm i --save file:vendor/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
  <TabItem value="pnpm" label="pnpm">
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
pnpm install file:vendor/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
  <TabItem value="yarn" label="Yarn" default>
<pre><code parentName="pre" {...{"className": "language-bash"}}>{`\
yarn add  file:vendor/xlsx-${current}.tgz`}
</code></pre>
  </TabItem>
</Tabs>

The package will be installed and accessible as `xlsx`.

## Usage

#### CommonJS `require`

By default, the module supports `require` and it will automatically add support
for streams and file system access:

```js
var XLSX = require("xlsx");
```

#### ESM `import`

The module also ships with `xlsx.mjs` for use with `import`.  The `mjs` version
does not automatically load native node modules, so they must be added manually:

```js
import * as XLSX from 'xlsx';

/* load 'fs' for readFile and writeFile support */
import * as fs from 'fs';
XLSX.set_fs(fs);

/* load 'stream' for stream support */
import { Readable } from 'stream';
XLSX.stream.set_readable(Readable);

/* load the codepage support library for extended support with older formats  */
import * as cpexcel from 'xlsx/dist/cpexcel.full.mjs';
XLSX.set_cptable(cpexcel);
```