Ask HN: Why isn't unsigned right shift the default in JavaScript?

Consider the following:

  0xFFFFFFFF >> 0 === -1

  0xFFFFFFFF >>> 0 === 4294967295

  1 << 31 === -2147483648

  1 << 31 >> 1 === -1073741824

  1 << 31 >>> 1 === 1073741824

Generally, I'd think unsigned is the more typical use case and signed is less used here... am I wrong?

If that's true, why isn't >>> the "cast to signed 32-bit and shift" version and >> the "cast to unsigned 32-bit and shift" version?