message: Improve fromHex: avoid deprecated substr, write to output buffer directly
diff: @@ -11,13 +11,14 @@ export function fromHex(hexstring: string): Uint8Array {
  throw new Error("hex string length must be a multiple of 2");
  }
  - const listOfInts: number[] = [];
  - for (let i = 0; i < hexstring.length; i += 2) {
  - const hexByteAsString = hexstring.substr(i, 2);
  + const out = new Uint8Array(hexstring.length / 2);
  + for (let i = 0; i < out.length; i++) {
  + const j = 2 * i;
  + const hexByteAsString = hexstring.slice(j, j + 2);
  if (!hexByteAsString.match(/[0-9a-f]{2}/i)) {
  throw new Error("hex string contains invalid characters");
  }
  - listOfInts.push(parseInt(hexByteAsString, 16));
  + out[i] = parseInt(hexByteAsString, 16);
  }
  - return new Uint8Array(listOfInts);
  + return out;
  }
  