RPC return value for 0

[ethers]

return values of 0x00 should be 0x
UPDATE: per comment below zero should be represented as "0x0"

[gavofyork]

according to latest docs:

How to encode types for JSONRPC:
When encoding UNFORMATTED DATA ("byte arrays"): encode as hex, prefix with "0x", two hex digits per byte. Examples:

• 0x41 (size 1, "A")
• 0x004200 (size 3, "\0B\0")
• 0x (size 0, "")
• WRONG: 0xf0f0f (must be even number of digits - should be 0x0f0f0f)
• WRONG: 004200 (must be prefixed 0x - should be 0x004200)

When encoding QUANTITIES ("integers", "numbers"): encode as hex, prefix with "0x", the most compact representation (slight exception: zero should be represented as "0x0"). Examples:

• 0x41 (65 in decimal)
• 0x400 (1024 in decimal)
• WRONG: 0x (should always have at least one digit - zero is "0x0")
• WRONG: 0x0400 (no leading zeroes - should be 0x400)
• WRONG: ff (must be prefixed 0x - should be 0xff)

[ethers]

what's the link to "latest docs" ? I searched these and didn't see the notes above:
https://github.com/ethereum/wiki/wiki/JSON-RPC
https://github.com/ethereum/wiki/wiki/JavaScript-API