Interface ZipWriterConstructorOptions

true to write entry data in a buffer before appending it to the zip file.

bufferedWrite is automatically set to true when compressing more than one entry in parallel.

The compression method (e.g. 8 for DEFLATE, 0 for STORE).

The creation date.

This option is ignored if the ZipWriterConstructorOptions#extendedTimestamp option is set to false.

true to add a data descriptor.

When set to false, the ZipWriterConstructorOptions#bufferedWrite option will automatically be set to true. It will be automatically set to false when it is undefined and the ZipWriterConstructorOptions#bufferedWrite option is set to true, or when the {@link ZipWriterConstructorOptions#zipCrypto} option is set totrue. Otherwise, the default value is true`.

true to add the signature of the data descriptor.

true to write encrypted data when passThrough is set to true.

The encryption strength (AES):

• 1: 128-bit encryption key
• 2: 192-bit encryption key
• 3: 256-bit encryption key

true to store extended timestamp extra fields.

When set to false, the maximum last modification date cannot exceed November 31, 2107 and the maximum accuracy is 2 seconds.

The external file attribute.

The Unix group id to write in the Unix extra field or as part of the external attributes.

The internal file attribute.

true to keep the order of the entry physically in the zip file.

When set to true, the use of web workers will be improved. However, it also prevents files larger than 4GB from being created without setting the zip64 option to true explicitly. Another solution to improve the use of web workers is to add entries from smallest to largest in uncompressed size.

The last access date.

This option is ignored if the ZipWriterConstructorOptions#extendedTimestamp option is set to false.

The last modification date.

The level of compression.

The minimum value is 0 and means that no compression is applied. The maximum value is 9.

When provided, MS-DOS attribute flags (boolean object) to write into external file attributes low byte.

When provided, the low 8-bit MS-DOS attributes to write into external file attributes. Must be an integer between 0 and 255.

true to write EntryMetaData#externalFileAttributes in MS-DOS format for folder entries.

The offset of the first entry in the zip file.

true to write the data as-is without compressing it and without crypting it.

The password used to encrypt the content of the entry.

true to prevent closing of WritableWriter#writable.

The password used to encrypt the content of the entry (raw).

true to set the setgid bit when writing the Unix mode.

true to set the setuid bit when writing the Unix mode.

The AbortSignal instance used to cancel the compression.

true to set the sticky bit when writing the Unix mode.

false to never write disk numbers in zip64 data.

The Unix owner id to write in the Unix extra field or as part of the external attributes.

Which Unix extra field format to write when creating entries that include Unix metadata.

• "infozip": use Info-ZIP New Unix extra field
• "unix": use the traditional Unix extra field format

The Unix mode (st_mode bits) to use when writing external attributes.

trueto produce zip files compatible with the USDZ specification.

true to mark the file names as UTF-8 setting the general purpose bit 11 in the header (see Appendix D - Language Encoding (EFS)), false to mark the names as compliant with the original IBM Code Page 437.

Note that this does not ensure that the file names are in the correct encoding.

The "Version" field.

The "Version made by" field.

true to use Zip64 to store the entry.

zip64 is automatically set to true when necessary (e.g. compressed data larger than 4GB or with unknown size).

true to use the ZipCrypto algorithm to encrypt the content of the entry. Setting it to true will also set the ZipWriterConstructorOptions#dataDescriptor to true.

It is not recommended to set zipCrypto to true because the ZipCrypto encryption can be easily broken.