Review how Buffer.from is used within Lodestar, and check the following:

• is it required to convert to Buffer at all?
• can we convert to Buffer without memory copy?
• does it impact browser compatibility?

Eg. a good example of incorrect Buffer.from usage

Depending on the size of the Uint8Array, converting to Buffer with memory copy is quite expensive while without copy it's essentially free

From unstable...nflaig/bench-buffer-from

Buffer utils
✔ Buffer.from - copy                  7.286412 ops/s    137.2418 ms/op   x1.024         38 runs   5.82 s
✔ Buffer.from - no copy                1117318 ops/s    895.0000 ns/op   x0.982     723013 runs   1.11 s
✔ Buffer.from - no copy with offset    1179245 ops/s    848.0000 ns/op        -    2699558 runs   3.85 s

Related #6687