We could experience some unexpected, implementation-defined behavior if the components of the timestamp are doubles with values outside the allowed integer range.

src/mongo/scripting/mozjs/valuewriter.cpp:302:22: warning: narrowing conversion from 'double' to 'unsigned int' [bugprone-narrowing-conversions]
    return Timestamp(wrapper.getNumber("t"), wrapper.getNumber("i"));
                     ^
src/mongo/scripting/mozjs/valuewriter.cpp:302:46: warning: narrowing conversion from 'double' to 'unsigned int' [bugprone-narrowing-conversions]
    return Timestamp(wrapper.getNumber("t"), wrapper.getNumber("i"));
                                             ^
src/mongo/scripting/mozjs/valuewriter.cpp:453:30: warning: narrowing conversion from 'double' to 'unsigned int' [bugprone-narrowing-conversions]
                Timestamp ot(o.getNumber("t"), o.getNumber("i"));
                             ^
src/mongo/scripting/mozjs/valuewriter.cpp:453:48: warning: narrowing conversion from 'double' to 'unsigned int' [bugprone-narrowing-conversions]
                Timestamp ot(o.getNumber("t"), o.getNumber("i"));