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module.exports = {

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  /* Allowed flush values; see deflate() and inflate() below for details */

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  Z_NO_FLUSH:         0,

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  Z_PARTIAL_FLUSH:    1,

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  Z_SYNC_FLUSH:       2,

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  Z_FULL_FLUSH:       3,

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  Z_FINISH:           4,

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  Z_BLOCK:            5,

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  Z_TREES:            6,

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  /* Return codes for the compression/decompression functions. Negative values

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  * are errors, positive values are used for special but normal events.

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  */

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  Z_OK:               0,

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  Z_STREAM_END:       1,

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  Z_NEED_DICT:        2,

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  Z_ERRNO:           -1,

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  Z_STREAM_ERROR:    -2,

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  Z_DATA_ERROR:      -3,

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  //Z_MEM_ERROR:     -4,

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  Z_BUF_ERROR:       -5,

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  //Z_VERSION_ERROR: -6,

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  /* compression levels */

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  Z_NO_COMPRESSION:         0,

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  Z_BEST_SPEED:             1,

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  Z_BEST_COMPRESSION:       9,

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  Z_DEFAULT_COMPRESSION:   -1,

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  Z_FILTERED:               1,

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  Z_HUFFMAN_ONLY:           2,

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  Z_RLE:                    3,

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  Z_FIXED:                  4,

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  Z_DEFAULT_STRATEGY:       0,

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  /* Possible values of the data_type field (though see inflate()) */

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  Z_BINARY:                 0,

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  Z_TEXT:                   1,

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  //Z_ASCII:                1, // = Z_TEXT (deprecated)

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  Z_UNKNOWN:                2,

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  /* The deflate compression method */

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  Z_DEFLATED:               8

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  //Z_NULL:                 null // Use -1 or null inline, depending on var type

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};

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