sheetjs-clone/demos/webpack/README.md

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# Webpack
This library is built with some dynamic logic to determine if it is invoked in a
script tag or in nodejs. Webpack does not understand those feature tests, so by
default it will do some strange things.
## Suppressing the Node shims
The library properly guards against accidental leakage of node features in the
browser but webpack disregards those. The config should explicitly suppress:
```js
node: {
fs: false,
process: false,
Buffer: false
}
```
## Exporting the XLSX variable
This library will not assign to module.exports if it is run in the browser. To
convince webpack, set `output` in the webpack config:
```js
output: {
libraryTarget: 'var',
library: 'XLSX'
}
```
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## Omitting optional dependencies
The `codepage` is needed in certain special cases, including files generated by
non-US-English versions of Excel, but may not be needed. To reduce build size,
the module can be omitted by aliasing the dependency:
```js
resolve: {
alias: { "./dist/cpexcel.js": "" }
},
```