constants.js 3.7 KB

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  1. // Update with any zlib constants that are added or changed in the future.
  2. // Node v6 didn't export this, so we just hard code the version and rely
  3. // on all the other hard-coded values from zlib v4736. When node v6
  4. // support drops, we can just export the realZlibConstants object.
  5. const realZlibConstants = require('zlib').constants ||
  6. /* istanbul ignore next */ { ZLIB_VERNUM: 4736 }
  7. module.exports = Object.freeze(Object.assign(Object.create(null), {
  8. Z_NO_FLUSH: 0,
  9. Z_PARTIAL_FLUSH: 1,
  10. Z_SYNC_FLUSH: 2,
  11. Z_FULL_FLUSH: 3,
  12. Z_FINISH: 4,
  13. Z_BLOCK: 5,
  14. Z_OK: 0,
  15. Z_STREAM_END: 1,
  16. Z_NEED_DICT: 2,
  17. Z_ERRNO: -1,
  18. Z_STREAM_ERROR: -2,
  19. Z_DATA_ERROR: -3,
  20. Z_MEM_ERROR: -4,
  21. Z_BUF_ERROR: -5,
  22. Z_VERSION_ERROR: -6,
  23. Z_NO_COMPRESSION: 0,
  24. Z_BEST_SPEED: 1,
  25. Z_BEST_COMPRESSION: 9,
  26. Z_DEFAULT_COMPRESSION: -1,
  27. Z_FILTERED: 1,
  28. Z_HUFFMAN_ONLY: 2,
  29. Z_RLE: 3,
  30. Z_FIXED: 4,
  31. Z_DEFAULT_STRATEGY: 0,
  32. DEFLATE: 1,
  33. INFLATE: 2,
  34. GZIP: 3,
  35. GUNZIP: 4,
  36. DEFLATERAW: 5,
  37. INFLATERAW: 6,
  38. UNZIP: 7,
  39. BROTLI_DECODE: 8,
  40. BROTLI_ENCODE: 9,
  41. Z_MIN_WINDOWBITS: 8,
  42. Z_MAX_WINDOWBITS: 15,
  43. Z_DEFAULT_WINDOWBITS: 15,
  44. Z_MIN_CHUNK: 64,
  45. Z_MAX_CHUNK: Infinity,
  46. Z_DEFAULT_CHUNK: 16384,
  47. Z_MIN_MEMLEVEL: 1,
  48. Z_MAX_MEMLEVEL: 9,
  49. Z_DEFAULT_MEMLEVEL: 8,
  50. Z_MIN_LEVEL: -1,
  51. Z_MAX_LEVEL: 9,
  52. Z_DEFAULT_LEVEL: -1,
  53. BROTLI_OPERATION_PROCESS: 0,
  54. BROTLI_OPERATION_FLUSH: 1,
  55. BROTLI_OPERATION_FINISH: 2,
  56. BROTLI_OPERATION_EMIT_METADATA: 3,
  57. BROTLI_MODE_GENERIC: 0,
  58. BROTLI_MODE_TEXT: 1,
  59. BROTLI_MODE_FONT: 2,
  60. BROTLI_DEFAULT_MODE: 0,
  61. BROTLI_MIN_QUALITY: 0,
  62. BROTLI_MAX_QUALITY: 11,
  63. BROTLI_DEFAULT_QUALITY: 11,
  64. BROTLI_MIN_WINDOW_BITS: 10,
  65. BROTLI_MAX_WINDOW_BITS: 24,
  66. BROTLI_LARGE_MAX_WINDOW_BITS: 30,
  67. BROTLI_DEFAULT_WINDOW: 22,
  68. BROTLI_MIN_INPUT_BLOCK_BITS: 16,
  69. BROTLI_MAX_INPUT_BLOCK_BITS: 24,
  70. BROTLI_PARAM_MODE: 0,
  71. BROTLI_PARAM_QUALITY: 1,
  72. BROTLI_PARAM_LGWIN: 2,
  73. BROTLI_PARAM_LGBLOCK: 3,
  74. BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: 4,
  75. BROTLI_PARAM_SIZE_HINT: 5,
  76. BROTLI_PARAM_LARGE_WINDOW: 6,
  77. BROTLI_PARAM_NPOSTFIX: 7,
  78. BROTLI_PARAM_NDIRECT: 8,
  79. BROTLI_DECODER_RESULT_ERROR: 0,
  80. BROTLI_DECODER_RESULT_SUCCESS: 1,
  81. BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: 2,
  82. BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: 3,
  83. BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: 0,
  84. BROTLI_DECODER_PARAM_LARGE_WINDOW: 1,
  85. BROTLI_DECODER_NO_ERROR: 0,
  86. BROTLI_DECODER_SUCCESS: 1,
  87. BROTLI_DECODER_NEEDS_MORE_INPUT: 2,
  88. BROTLI_DECODER_NEEDS_MORE_OUTPUT: 3,
  89. BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: -1,
  90. BROTLI_DECODER_ERROR_FORMAT_RESERVED: -2,
  91. BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: -3,
  92. BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: -4,
  93. BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: -5,
  94. BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: -6,
  95. BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: -7,
  96. BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: -8,
  97. BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: -9,
  98. BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: -10,
  99. BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: -11,
  100. BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: -12,
  101. BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: -13,
  102. BROTLI_DECODER_ERROR_FORMAT_PADDING_1: -14,
  103. BROTLI_DECODER_ERROR_FORMAT_PADDING_2: -15,
  104. BROTLI_DECODER_ERROR_FORMAT_DISTANCE: -16,
  105. BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: -19,
  106. BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: -20,
  107. BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: -21,
  108. BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: -22,
  109. BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: -25,
  110. BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: -26,
  111. BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: -27,
  112. BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: -30,
  113. BROTLI_DECODER_ERROR_UNREACHABLE: -31,
  114. }, realZlibConstants))