Saving an array of uint8array in an file using node js

Question

I'm trying to save an array of uint8arrays in an file using node JS, does anyone know how can I do that using fs? Something like that:

[ Uint8Array(162) [ 133, 111, 74, 131, 187, 35, 69, 135, 1, 151, 1, 1, 198, 69, 229, 121, 168, 106, 59, 104, 91, 198, 115, 218, 79, 67, 102, 212, 204, 206, 145, 126, 152, 59, 147, 114, 133, 173, 119, 91, 220, 251, 174, 57, 16, 125, 67, 180, 114, 128, 5, 72, 143, 131, 122, 35, 124, 139, 62, 93, 187, 2, 2, 251, 255, 149, 134, 6, 9, 65, 100, 100, 32, 99, 97, 114, 100, 50, 0, 9, 1, 2, 2, 4, 19, 4, 21, 14, 52, 3, 66, 4, 86, 5, 87, 26, 112, 2, 3, 0, ... 62 more items ], Uint8Array(170) [ 133, 111, 74, 131, 67, 31, 18, 227, 1, 159, 1, 1, 187, 35, 69, 135, 0, 7, 102, 52, 237, 242, 169, 192, 199, 237, 238, 142, 226, 200, 98, 129, 144, 184, 181, 198, 33, 248, 228, 223, 158, 171, 250, 192, 16, 125, 67, 180, 114, 128, 5, 72, 143, 131, 122, 35, 124, 139, 62, 93, 187, 3, 5, 251, 255, 149, 134, 6, 8, 65, 100, 100, 32, 99, 97, 114, 100, 0, 10, 1, 2, 2, 4, 17, 4, 19, 4, 21, 14, 52, 3, 66, 4, 86, 5, 87, 29, 112, 2, 3, ... 70 more items ], Uint8Array(120) [ 133, 111, 74, 131, 71, 17, 199, 138, 1, 110, 1, 67, 31, 18, 227, 131, 113, 252, 222, 71, 172, 34, 205, 40, 96, 11, 236, 242, 153, 43, 182, 4, 136, 135, 36, 6, 79, 52, 223, 123, 188, 42, 7, 16, 125, 67, 180, 114, 128, 5, 72, 143, 131, 122, 35, 124, 139, 62, 93, 187, 4, 8, 251, 255, 149, 134, 6, 11, 68, 101, 108, 101, 116, 101, 32, 99, 97, 114, 100, 0, 10, 1, 2, 2, 2, 17, 2, 19, 2, 52, 1, 66, 2, 86, 2, 112, 2, 113, 2, 115, ... 20 more items ], Uint8Array(126) [ 133, 111, 74, 131, 51, 54, 68, 129, 1, 116, 1, 71, 17, 199, 138, 51, 167, 78, 185, 254, 251, 73, 245, 53, 153, 253, 146, 203, 139, 250, 206, 105, 223, 51, 227, 156, 55, 3, 146, 177, 243, 235, 140, 16, 125, 67, 180, 114, 128, 5, 72, 143, 131, 122, 35, 124, 139, 62, 93, 187, 5, 9, 251, 255, 149, 134, 6, 17, 77, 97, 114, 107, 32, 99, 97, 114, 100, 32, 97, 115, 32, 100, 111, 110, 101, 0, 9, 1, 2, 2, 2, 21, 6, 52, 1, 66, 2, 86, 2, 112, ... 26 more items ] ]

Answer 1

I am simply using the following, for exporting into docx file:

buffer = Uint8Array(86762) [
   80,  75,   3,   4,  10,   0,   0,   0,   8,   0,  79,  72,
  111,  85, 212,  85, 145,  41, 234,   1,   0,   0,  43,  11,
    0,   0,  19,   0,   0,   0,  91,  67, 111, 110, 116, 101,
  110, 116,  95,  84, 121, 112, 101, 115,  93,  46, 120, 109,
  108, 197, 150, 205,  78, 227,  48,  20, 133, 247,  60, 133,
  229,  45, 106,  92,  64,  26, 141,  80,  83,  22, 252,  44,
   25, 164, 233,  60, 128,  27, 223, 164, 134, 248,  71, 182,
   91, 232, 219, 207, 117,  66,  67, 169,  18, 198, 154,  54,
   98,  83,  41, 182,
  ... 86662 more items
]
fs.writeFileSync('output.docx', buffer)

I suppose restoring it will be just fs.readFileSync(pathToFile)