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// Update with any zlib constants that are added or changed in the future.
// Node v6 didn't export this, so we just hard code the version and rely
// on all the other hard-coded values from zlib v4736. When node v6
// support drops, we can just export the realZlibConstants object.
const realZlibConstants = require('zlib').constants ||
/* istanbul ignore next */ { ZLIB_VERNUM: 4736 }
module.exports = Object.freeze(Object.assign(Object.create(null), {
Z_NO_FLUSH: 0,
Z_PARTIAL_FLUSH: 1,
Z_SYNC_FLUSH: 2,
Z_FULL_FLUSH: 3,
Z_FINISH: 4,
Z_BLOCK: 5,
Z_OK: 0,
Z_STREAM_END: 1,
Z_NEED_DICT: 2,
Z_ERRNO: -1,
Z_STREAM_ERROR: -2,
Z_DATA_ERROR: -3,
Z_MEM_ERROR: -4,
Z_BUF_ERROR: -5,
Z_VERSION_ERROR: -6,
Z_NO_COMPRESSION: 0,
Z_BEST_SPEED: 1,
Z_BEST_COMPRESSION: 9,
Z_DEFAULT_COMPRESSION: -1,
Z_FILTERED: 1,
Z_HUFFMAN_ONLY: 2,
Z_RLE: 3,
Z_FIXED: 4,
Z_DEFAULT_STRATEGY: 0,
DEFLATE: 1,
INFLATE: 2,
GZIP: 3,
GUNZIP: 4,
DEFLATERAW: 5,
INFLATERAW: 6,
UNZIP: 7,
BROTLI_DECODE: 8,
BROTLI_ENCODE: 9,
Z_MIN_WINDOWBITS: 8,
Z_MAX_WINDOWBITS: 15,
Z_DEFAULT_WINDOWBITS: 15,
Z_MIN_CHUNK: 64,
Z_MAX_CHUNK: Infinity,
Z_DEFAULT_CHUNK: 16384,
Z_MIN_MEMLEVEL: 1,
Z_MAX_MEMLEVEL: 9,
Z_DEFAULT_MEMLEVEL: 8,
Z_MIN_LEVEL: -1,
Z_MAX_LEVEL: 9,
Z_DEFAULT_LEVEL: -1,
BROTLI_OPERATION_PROCESS: 0,
BROTLI_OPERATION_FLUSH: 1,
BROTLI_OPERATION_FINISH: 2,
BROTLI_OPERATION_EMIT_METADATA: 3,
BROTLI_MODE_GENERIC: 0,
BROTLI_MODE_TEXT: 1,
BROTLI_MODE_FONT: 2,
BROTLI_DEFAULT_MODE: 0,
BROTLI_MIN_QUALITY: 0,
BROTLI_MAX_QUALITY: 11,
BROTLI_DEFAULT_QUALITY: 11,
BROTLI_MIN_WINDOW_BITS: 10,
BROTLI_MAX_WINDOW_BITS: 24,
BROTLI_LARGE_MAX_WINDOW_BITS: 30,
BROTLI_DEFAULT_WINDOW: 22,
BROTLI_MIN_INPUT_BLOCK_BITS: 16,
BROTLI_MAX_INPUT_BLOCK_BITS: 24,
BROTLI_PARAM_MODE: 0,
BROTLI_PARAM_QUALITY: 1,
BROTLI_PARAM_LGWIN: 2,
BROTLI_PARAM_LGBLOCK: 3,
BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: 4,
BROTLI_PARAM_SIZE_HINT: 5,
BROTLI_PARAM_LARGE_WINDOW: 6,
BROTLI_PARAM_NPOSTFIX: 7,
BROTLI_PARAM_NDIRECT: 8,
BROTLI_DECODER_RESULT_ERROR: 0,
BROTLI_DECODER_RESULT_SUCCESS: 1,
BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: 2,
BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: 3,
BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: 0,
BROTLI_DECODER_PARAM_LARGE_WINDOW: 1,
BROTLI_DECODER_NO_ERROR: 0,
BROTLI_DECODER_SUCCESS: 1,
BROTLI_DECODER_NEEDS_MORE_INPUT: 2,
BROTLI_DECODER_NEEDS_MORE_OUTPUT: 3,
BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: -1,
BROTLI_DECODER_ERROR_FORMAT_RESERVED: -2,
BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: -3,
BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: -4,
BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: -5,
BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: -6,
BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: -7,
BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: -8,
BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: -9,
BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: -10,
BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: -11,
BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: -12,
BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: -13,
BROTLI_DECODER_ERROR_FORMAT_PADDING_1: -14,
BROTLI_DECODER_ERROR_FORMAT_PADDING_2: -15,
BROTLI_DECODER_ERROR_FORMAT_DISTANCE: -16,
BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: -19,
BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: -20,
BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: -21,
BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: -22,
BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: -25,
BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: -26,
BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: -27,
BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: -30,
BROTLI_DECODER_ERROR_UNREACHABLE: -31,
}, realZlibConstants))
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