How to use the buffer.kMaxLength.toString function in buffer

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

const Buffer = require('buffer').Buffer;
const Transform = require('_stream_transform');
const binding = process.binding('zlib');
const assert = require('assert').ok;
const kMaxLength = require('buffer').kMaxLength;
const kRangeErrorMessage = 'Cannot create final Buffer. It would be larger ' +
                           `than 0x${kMaxLength.toString(16)} bytes`;

const constants = process.binding('constants').zlib;
const { inherits } = require('util');

// translation table for return codes.
const codes = {
  Z_OK: constants.Z_OK,
  Z_STREAM_END: constants.Z_STREAM_END,
  Z_NEED_DICT: constants.Z_NEED_DICT,
  Z_ERRNO: constants.Z_ERRNO,
  Z_STREAM_ERROR: constants.Z_STREAM_ERROR,
  Z_DATA_ERROR: constants.Z_DATA_ERROR,
  Z_MEM_ERROR: constants.Z_MEM_ERROR,
  Z_BUF_ERROR: constants.Z_BUF_ERROR,
  Z_VERSION_ERROR: constants.Z_VERSION_ERROR
};

// our internal use.
  var size;
  if ((statValues[1/*mode*/] & S_IFMT) === S_IFREG)
    size = context.size = statValues[8/*size*/];
  else
    size = context.size = 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = Buffer.allocUnsafeSlow(size);
  context.read();
}

'use strict';

const Buffer = require('buffer').Buffer;
const Transform = require('stream').Transform;
const binding = require('./binding');
const util = require('util');
const assert = require('assert').ok;
const kMaxLength = require('buffer').kMaxLength;
const kRangeErrorMessage = 'Cannot create final Buffer. It would be larger ' +
                           'than 0x' + kMaxLength.toString(16) + ' bytes';

// zlib doesn't provide these, so kludge them in following the same
// const naming scheme zlib uses.
binding.Z_MIN_WINDOWBITS = 8;
binding.Z_MAX_WINDOWBITS = 15;
binding.Z_DEFAULT_WINDOWBITS = 15;

// fewer than 64 bytes per chunk is stupid.
// technically it could work with as few as 8, but even 64 bytes
// is absurdly low.  Usually a MB or more is best.
binding.Z_MIN_CHUNK = 64;
binding.Z_MAX_CHUNK = Infinity;
binding.Z_DEFAULT_CHUNK = (16 * 1024);

binding.Z_MIN_MEMLEVEL = 1;
binding.Z_MAX_MEMLEVEL = 9;

inOff, // in_off
      availInBefore, // in_len
      this._buffer, // out
      this._offset, //out_off
      availOutBefore); // out_len
    // Node 8 --> 9 compatibility check
    res = res || this._writeState;
  } while (!this._hadError && handleChunk(res[0], res[1]));

  if (this._hadError) {
    throw error;
  }

  if (nread >= kMaxLength) {
    _close(this);
    throw new RangeError('Cannot create final Buffer. It would be larger than 0x' + kMaxLength.toString(16) + ' bytes');
  }

  var buf = Buffer.concat(buffers, nread);
  _close(this);

  return buf;
};

var context = this.context;

  if (err)
    return context.close(err);

  var size = context.size = st.isFile() ? st.size : 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = new SlowBuffer(size);
  context.read();
}

var context = this.context;

  if (err)
    return context.close(err);

  var size = context.size = st.isFile() ? st.size : 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = Buffer.allocUnsafeSlow(size);
  context.read();
}

var context = this.context;

  if (err)
    return context.close(err);

  var size = context.size = st.isFile() ? st.size : 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = Buffer.allocUnsafeSlow(size);
  context.read();
}

if (err)
    return context.close(err);

  
  var size = context.size = st.isFile() ? st.size : 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = Buffer.allocUnsafeSlow(size);
  context.read();
}

var context = this.context;

  if (err)
    return context.close(err);

  var size = context.size = st.isFile() ? st.size : 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = Buffer.allocUnsafeSlow(size);
  context.read();
}

var context = this.context;

  if (err)
    return context.close(err);

  var size = context.size = st.isFile() ? st.size : 0;

  if (size === 0) {
    context.buffers = [];
    context.read();
    return;
  }

  if (size > kMaxLength) {
    err = new RangeError('File size is greater than possible Buffer: ' +
                         `0x${kMaxLength.toString(16)} bytes`);
    return context.close(err);
  }

  context.buffer = Buffer.allocUnsafeSlow(size);
  context.read();
}