index.js

const binding = require("pkg-prebuilds")(
  __dirname,
  require("./binding-options")
);

// Copy exports so that we can customize them on the JS side without
// overwriting the binding itself.
Object.keys(binding).forEach(function (key) {
  module.exports[key] = binding[key];
});

// Convenience wrapper for Buffer slicing.
module.exports.compressSync = function (buffer, optionalOutBuffer, options) {
  var out = binding.compressSync(buffer, optionalOutBuffer, options);
  return out.data.slice(0, out.size);
};

// Convenience wrapper for Buffer slicing.
module.exports.compress = function (a, b, c) {
  return binding.compress(a, b, c).then((out) => {
    return out.data.slice(0, out.size);
  });
};

// Convenience wrapper for Buffer slicing.
module.exports.decompressSync = function (buffer, optionalOutBuffer, options) {
  var out = binding.decompressSync(buffer, optionalOutBuffer, options);
  out.data = out.data.slice(0, out.size);
  return out;
};

// Convenience wrapper for Buffer slicing.
module.exports.decompress = function (a, b, c) {
  return binding.decompress(a, b, c).then((out) => {
    out.data = out.data.slice(0, out.size);
    return out;
  });
};