Add compatibility with older node versions #46
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I added the
buffer-from
ponyfill forBuffer.from
andsafe-compare
forcrypto.timingSafeEqual
. I tested it on Node 0.10.48 and 18.x locally on my Windows machine, and the tests passed. The last test was not passing though on Node 0.10.48. It could be something to do with the Uint8Array implementation on that node version. It gaveTypeError: Not a buffer
so I might have altered the test 😁.I know it's 2 more dependencies, I hope that's not inconvenient.