DeclarationError: Undeclared identifier

[arjun-go-go]

  github.com/Arachnid/solidity-stringutils/src/strings.sol:705:13: DeclarationError: Undeclared identifier.
    for(i = 0; i < parts.length; i++) {
        ^

[smartDev22]

for(uint i = 0; i < parts.length; i++) {