Node.js's Buffer.writeFloatBE in Javascript ArrayBuffer

Question

I have the following code in Node.js:

  var number = parseFloat(-0.8);
  var buffer = new Buffer(4);
  buffer.writeFloatBE(number, 0);
  return -~parseInt(buffer.toString('hex'), 16) - 1;

How can I accomplish the same with ArrayBuffer in normal javascript?

Answer 1

You can reuse IEEE754 writer from Buffer itself (it's now moved to C++ land, link to JS implementation)