Warnings generated when installing with npm

[bengrunfeld]

Node version: v10.0.0
NPM version: 6.7.0

tradey $ npm install --save tulind

> [email protected] install /Users/ben/Desktop/Work/code/tradey/node_modules/tulind
> node-pre-gyp install --fallback-to-build

node-pre-gyp WARN Using request for node-pre-gyp https download
node-pre-gyp WARN Tried to download(404): https://tulipnode.s3.amazonaws.com/tulind/v0.8.14/Release/tulind-v0.8.14-node-v64-darwin-x64.tar.gz
node-pre-gyp WARN Pre-built binaries not found for [email protected] and [email protected] (node-v64 ABI, unknown) (falling back to source compile with node-gyp)
  CXX(target) Release/obj.target/tulind/tulind.o
../tulind.cpp:72:22: warning: comparison of integers of different signs:
      'const int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
    if (ind->options != options->Length()) {
        ~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~
../tulind.cpp:236:10: warning: 'MakeCallback' is deprecated
      [-Wdeprecated-declarations]
    Nan::MakeCallback(Nan::GetCurrentContext()->Global(), callbackHandle...
         ^
../../nan/nan.h:929:3: note: 'MakeCallback' has been explicitly marked
      deprecated here
  NAN_DEPRECATED inline v8::Local<v8::Value> MakeCallback(
  ^
../../nan/nan.h:98:40: note: expanded from macro 'NAN_DEPRECATED'
# define NAN_DEPRECATED __attribute__((deprecated))
                                       ^
../tulind.cpp:127:21: warning: comparison of integers of different signs:
      'const int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
    if (ind->inputs != inputs->Length()) {
        ~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~
../tulind.cpp:134:22: warning: comparison of integers of different signs:
      'const int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
    if (ind->options != options->Length()) {
        ~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~
4 warnings generated.
  CC(target) Release/obj.target/tulind/external/tiamalgamation.o
  SOLINK_MODULE(target) /Users/ben/Desktop/Work/code/tradey/node_modules/tulind/lib/binding/Release/node-v64-darwin-x64/tulind.node
  COPY Release/tulind.node
+ [email protected]
added 31 packages from 17 contributors and audited 33401 packages in 16.34s
found 0 vulnerabilities

[codeplea]

These warnings shouldn't affect performance.

If anyone wants to address them, I would appreciate the help.