sheetjs/docbits/40_interface.md

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## Interface
`XLSX` is the exposed variable in the browser and the exported node variable
`XLSX.version` is the version of the library (added by the build script).
`XLSX.SSF` is an embedded version of the [format library](http://git.io/ssf).
### Parsing functions
`XLSX.read(data, read_opts)` attempts to parse `data`.
`XLSX.readFile(filename, read_opts)` attempts to read `filename` and parse.
Parse options are described in the [Parsing Options](#parsing-options) section.
### Writing functions
`XLSX.write(wb, write_opts)` attempts to write the workbook `wb`
`XLSX.writeFile(wb, filename, write_opts)` attempts to write `wb` to `filename`
`XLSX.writeFileAsync(filename, wb, o, cb)` attempts to write `wb` to `filename`.
If `o` is omitted, the writer will use the third argument as the callback.
`XLSX.stream` contains a set of streaming write functions.
Write options are described in the [Writing Options](#writing-options) section.
### Utilities
Utilities are available in the `XLSX.utils` object:
**Importing:**
- `aoa_to_sheet` converts an array of arrays of JS data to a worksheet.
- `json_to_sheet` converts an array of JS objects to a worksheet.
- `table_to_sheet` converts a DOM TABLE element to a worksheet.
**Exporting:**
- `sheet_to_json` converts a worksheet object to an array of JSON objects.
- `sheet_to_csv` generates delimiter-separated-values output.
- `sheet_to_html` generates HTML output.
- `sheet_to_formulae` generates a list of the formulae (with value fallbacks).
These utilities are described in [Utility Functions](#utility-functions) below.
**Cell and cell address manipulation:**
- `format_cell` generates the text value for a cell (using number formats)
- `{en,de}code_{row,col}` convert between 0-indexed rows/cols and A1 forms.
- `{en,de}code_cell` converts cell addresses
- `{en,de}code_range` converts cell ranges
Utilities are described in the [Utility Functions](#utility-functions) section.