2017-03-20 09:02:25 +00:00
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## Writing Options
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The exported `write` and `writeFile` functions accept an options argument:
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| Option Name | Default | Description |
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| :---------- | -------: | :-------------------------------------------------- |
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| type | | Output data encoding (see Output Type below) |
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| cellDates | `false` | Store dates as type `d` (default is `n`) |
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| bookSST | `false` | Generate Shared String Table ** |
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| bookType | `"xlsx"` | Type of Workbook (see below for supported formats) |
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| sheet | `""` | Name of Worksheet for single-sheet formats ** |
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| compression | `false` | Use ZIP compression for ZIP-based formats ** |
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- `bookSST` is slower and more memory intensive, but has better compatibility
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with older versions of iOS Numbers
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2017-03-27 21:35:15 +00:00
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- The raw data is the only thing guaranteed to be saved. Features not described
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in this README may not be serialized.
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- `cellDates` only applies to XLSX output and is not guaranteed to work with
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third-party readers. Excel itself does not usually write cells with type `d`
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so non-Excel tools may ignore the data or blow up in the presence of dates.
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### Supported Output Formats
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For broad compatibility with third-party tools, this library supports many
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output formats. The specific file type is controlled with `bookType` option:
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| bookType | file ext | container | sheets | Description |
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| :------- | -------: | :-------: | :----- |:--------------------------------- |
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| `xlsx` | `.xlsx` | ZIP | multi | Excel 2007+ XML Format |
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| `xlsm` | `.xlsm` | ZIP | multi | Excel 2007+ Macro XML Format |
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| `xlsb` | `.xlsb` | ZIP | multi | Excel 2007+ Binary Format |
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| `ods` | `.ods` | ZIP | multi | OpenDocument Spreadsheet |
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| `biff2` | `.xls` | none | single | Excel 2.0 Worksheet format |
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| `fods` | `.fods` | none | multi | Flat OpenDocument Spreadsheet |
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| `csv` | `.csv` | none | single | Comma Separated Values |
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| `sylk` | `.sylk` | none | single | Symbolic Link (SYLK) |
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| `dif` | `.dif` | none | single | Data Interchange Format (DIF) |
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- `compression` only applies to formats with ZIP containers.
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- Formats that only support a single sheet require a `sheet` option specifying
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the worksheet. If the string is empty, the first worksheet is used.
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### Output Type
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The `type` argument for `write` mirrors the `type` argument for `read`:
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| `type` | output |
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|------------|-----------------------------------------------------------------|
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| `"base64"` | string: base64 encoding of the file |
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| `"binary"` | string: binary string (`n`-th byte is `data.charCodeAt(n)`) |
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| `"buffer"` | nodejs Buffer |
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| `"file"` | string: name of file to be written (nodejs only) |
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