@mlightcad/common
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TypeScript
/**
* @fileoverview Lightweight utility functions inspired by lodash-es.
*
* This module provides simplified implementations of commonly used lodash functions
* to reduce bundle size while maintaining essential functionality for object manipulation,
* comparison, and validation operations.
*
* @module AcCmLodashUtils
* @version 1.0.0
*/
/**
* Utility functions extracted from lodash-es to reduce bundle size
* These are simplified implementations of commonly used lodash functions
*/
/**
* Creates a shallow clone of an object or array.
*
* For primitive values, returns the value as-is. For objects and arrays,
* creates a new instance with the same properties or elements.
*
* @template T - The type of the object to clone.
* @param {T} obj - The object to clone.
* @returns {T} A shallow clone of the object.
*
* @example
* ```typescript
* import { clone } from './AcCmLodashUtils'
*
* const original = { a: 1, b: 2 }
* const cloned = clone(original)
* cloned.a = 3
* console.log(original.a) // 1 (unchanged)
* console.log(cloned.a) // 3
*
* const arr = [1, 2, 3]
* const clonedArr = clone(arr) // [1, 2, 3]
* ```
*/
export declare function clone<T>(obj: T): T;
/**
* Deeply clones a value (object, array, Date, RegExp, or primitive)
* @param value The value to deep clone
* @returns A deep copy of the input value
*/
export declare function deepClone<T>(value: T): T;
/**
* Assigns own enumerable properties of source objects to the destination object
* for all destination properties that resolve to undefined.
*
* This function fills in undefined properties in an object with the first value
* present in any of the source objects. Source objects are applied from left to right.
*
* @param {Record<string, unknown>} obj - The destination object.
* @param {...Record<string, unknown>[]} sources - The source objects.
* @returns {Record<string, unknown>} The destination object.
*
* @example
* ```typescript
* import { defaults } from './AcCmLodashUtils'
*
* const object = { a: 1 }
* const result = defaults(object, { b: 2 }, { a: 3, c: 3 })
* console.log(result) // { a: 1, b: 2, c: 3 }
*
* // undefined properties are filled in
* const partial = { a: 1, b: undefined }
* defaults(partial, { b: 2, c: 3 })
* console.log(partial) // { a: 1, b: 2, c: 3 }
* ```
*/
export declare function defaults(obj: Record<string, unknown>, ...sources: Record<string, unknown>[]): Record<string, unknown>;
/**
* Checks if path is a direct property of object.
*
* This function checks whether the specified property exists directly on the object
* (not inherited from its prototype chain).
*
* @param {Record<string, unknown>} obj - The object to query.
* @param {string} path - The path to check.
* @returns {boolean} Returns true if path exists, else false.
*
* @example
* ```typescript
* import { has } from './AcCmLodashUtils'
*
* const object = { a: 1, b: 2 }
* has(object, 'a') // true
* has(object, 'c') // false
* has(object, 'toString') // false (inherited property)
* ```
*/
export declare function has(obj: Record<string, unknown>, path: string): boolean;
/**
* Checks if value is an empty object, collection, map, or set.
*
* Values are considered empty if they are:
* - null or undefined
* - Arrays or strings with length 0
* - Maps or Sets with size 0
* - Objects with no enumerable properties
*
* @param {unknown} value - The value to check.
* @returns {boolean} Returns true if value is empty, else false.
*
* @example
* ```typescript
* import { isEmpty } from './AcCmLodashUtils'
*
* isEmpty(null) // true
* isEmpty(undefined) // true
* isEmpty('') // true
* isEmpty([]) // true
* isEmpty({}) // true
* isEmpty(new Map()) // true
* isEmpty(new Set()) // true
* isEmpty('hello') // false
* isEmpty([1, 2, 3]) // false
* isEmpty({ a: 1 }) // false
* ```
*/
export declare function isEmpty(value: unknown): boolean;
/**
* Performs a deep comparison between two values to determine if they are equivalent.
*
* This function recursively compares objects and arrays, checking that all nested
* properties and elements are equal. Handles null/undefined values, primitive types,
* arrays, and plain objects.
*
* @param {unknown} value - The value to compare.
* @param {unknown} other - The other value to compare.
* @returns {boolean} Returns true if the values are equivalent, else false.
*
* @example
* ```typescript
* import { isEqual } from './AcCmLodashUtils'
*
* isEqual(1, 1) // true
* isEqual('hello', 'hello') // true
* isEqual([1, 2], [1, 2]) // true
* isEqual({ a: 1 }, { a: 1 }) // true
* isEqual([1, 2], [2, 1]) // false
* isEqual({ a: 1 }, { a: 2 }) // false
*
* // Deep comparison
* const obj1 = { a: { b: 1 } }
* const obj2 = { a: { b: 1 } }
* isEqual(obj1, obj2) // true
* ```
*/
export declare function isEqual(value: unknown, other: unknown): boolean;
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