lodash._createwrapper

var createWrapper = require('lodash._createwrapper');

var createWrapper = require('lodash._createwrapper');

// Create a simple bound function
function greet(greeting, name) {
  return greeting + ' ' + name + '!';
}

// Bind with BIND_FLAG (1)
var boundGreet = createWrapper(greet, 1, null, ['Hello'], null, null, null, null);
console.log(boundGreet('World')); // "Hello World!"

// Create a curried function with CURRY_FLAG (8)
function add(a, b, c) {
  return a + b + c;
}

var curriedAdd = createWrapper(add, 8, null, null, null, null, null, 3);
console.log(curriedAdd(1)(2)(3)); // 6
console.log(curriedAdd(1, 2)(3)); // 6

/**
 * Creates a function that either curries or invokes `func` with optional
 * `this` binding and partially applied arguments.
 * 
 * @param {Function|string} func The function or method name to wrap
 * @param {number} bitmask The bitmask of wrapper flags
 * @param {*} [thisArg] The `this` binding of `func`
 * @param {Array} [partials] The arguments to be partially applied
 * @param {Array} [holders] The `partials` placeholder indexes
 * @param {Array} [argPos] The argument positions of the new function
 * @param {number} [ary] The arity cap of `func`
 * @param {number} [arity] The arity of `func`
 * @returns {Function} Returns the new wrapped function
 * @throws {TypeError} Throws if `func` is not a function and not using BIND_KEY_FLAG
 */
function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity);

// Wrapper behavior flags (used in bitmask parameter)
const BIND_FLAG = 1;           // _.bind
const BIND_KEY_FLAG = 2;       // _.bindKey  
const CURRY_BOUND_FLAG = 4;    // _.curry or _.curryRight of a bound function
const CURRY_FLAG = 8;          // _.curry
const CURRY_RIGHT_FLAG = 16;   // _.curryRight
const PARTIAL_FLAG = 32;       // _.partial
const PARTIAL_RIGHT_FLAG = 64; // _.partialRight
const ARY_FLAG = 128;          // _.ary (arity control)
const FLIP_FLAG = 512;         // _.flip (argument order reversal)

var createWrapper = require('lodash._createwrapper');

// Example 1: Simple binding
function greet(greeting, name) {
  return this.prefix + greeting + ' ' + name + '!';
}

var context = { prefix: 'Say: ' };
var boundGreet = createWrapper(greet, 1, context, ['Hello'], null, null, null, null);
console.log(boundGreet('World')); // "Say: Hello World!"

// Example 2: Currying
function multiply(a, b, c) {
  return a * b * c;
}

var curriedMultiply = createWrapper(multiply, 8, null, null, null, null, null, 3);
var multiplyBy2 = curriedMultiply(2);
var multiplyBy2And3 = multiplyBy2(3);
console.log(multiplyBy2And3(4)); // 24

// Example 3: Partial application
function calculate(operation, a, b, c) {
  if (operation === 'sum') return a + b + c;
  if (operation === 'product') return a * b * c;
}

var sum = createWrapper(calculate, 32, null, ['sum'], null, null, null, null);
console.log(sum(1, 2, 3)); // 6

// Example 4: Argument reordering with flip
function divide(a, b) {
  return a / b;
}

var flippedDivide = createWrapper(divide, 512, null, null, null, null, null, null);
console.log(flippedDivide(2, 10)); // 5 (equivalent to divide(10, 2))

// Example 5: Arity control
function variadic() {
  return Array.prototype.slice.call(arguments);
}

var binary = createWrapper(variadic, 128, null, null, null, null, 2, null);
console.log(binary(1, 2, 3, 4, 5)); // [1, 2] (only first 2 arguments)

var createWrapper = require('lodash._createwrapper');

// Combine BIND_FLAG + PARTIAL_FLAG for bound partial application
function logger(level, category, message) {
  console.log('[' + level + '] ' + category + ': ' + message);
}

var context = { prefix: 'App ' };
var infoLogger = createWrapper(
  logger, 
  1 | 32, // BIND_FLAG | PARTIAL_FLAG
  context, 
  ['INFO'], 
  null, 
  null, 
  null, 
  null
);

infoLogger('Database', 'Connection established'); // [INFO] Database: Connection established

// Combine CURRY_FLAG + PARTIAL_FLAG for curried partial application  
function process(config, data, options, callback) {
  // Processing logic
  callback(null, 'processed: ' + data);
}

var curriedProcessor = createWrapper(
  process,
  8 | 32, // CURRY_FLAG | PARTIAL_FLAG
  null,
  [{ mode: 'fast' }], // partial config
  null,
  null,
  null,
  4 // arity
);

// Can be called with currying
curriedProcessor('mydata')({ compress: true })(function(err, result) {
  console.log(result); // 'processed: mydata'
});

var createWrapper = require('lodash._createwrapper');

function format(template, value1, value2, value3) {
  return template
    .replace('%1', value1)
    .replace('%2', value2) 
    .replace('%3', value3);
}

var curriedFormat = createWrapper(format, 8, null, null, null, null, null, 4);

// Use placeholder pattern (when accessing .placeholder property in real lodash)
// Note: In this standalone module, placeholder handling is internal
var template = curriedFormat('Hello %1, you have %2 %3');
console.log(template('John', 5, 'messages')); // "Hello John, you have 5 messages"

var createWrapper = require('lodash._createwrapper');

try {
  // This will throw TypeError since 'not-a-function' is not a function
  // and BIND_KEY_FLAG is not used
  var wrapper = createWrapper('not-a-function', 1, null, null, null, null, null, null);
} catch (error) {
  console.log(error.message); // "Expected a function"
}

// Valid usage with BIND_KEY_FLAG for method names
var obj = {
  getValue: function() { return this.value; },
  value: 42
};

var boundMethod = createWrapper('getValue', 2, obj, null, null, null, null, null);
console.log(boundMethod()); // 42