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391a73c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 | /**
* Applies a function to the value at the given index of an array
*
* @param index
* @param fn
* @param collection
* @returns Copy of the array with the element at the given index replaced with the result of the function application.
*/
const adjust = (index, fn, collection) => {
if (index >= collection.length)
return collection;
if (index < 0 && Math.abs(index) > collection.length)
return collection;
const i = index < 0 ? collection.length + index : index;
return Object.assign([], collection, { [i]: fn(collection[i]) });
};
/* eslint-disable no-await-in-loop */
/**
* Performs right-to-left function composition with async functions support.
* asyncCompose(f, g, h)(x) is equivalent to f(g(h(x))), awaiting each result.
*
* @param fns - Functions to compose (can be sync or async)
* @returns Composed async function that applies functions from right to left
*/
const asyncCompose = (...fns) => async (value, ...args) => {
let result = value;
for (let i = fns.length - 1; i >= 0; i -= 1) {
result = await fns[i](result, ...args);
}
return result;
};
/**
* Capitalize first letter of each word
*
* @param value - Any string
* @returns Capitalized string
*/
const capitalize = (value) => {
if (!value)
return value;
return value.replace(/(^|\s)\S/g, (l) => l.toUpperCase());
};
/**
* Casts value to array
*
* @template T - The type of the value.
* @param value - The value to cast into an array.
* @returns The value as-is if already an array, otherwise wrapped in an array.
*/
const castArray = (value) => {
return Array.isArray(value) ? value : [value];
};
/**
* Performs right-to-left function composition.
* compose(f, g, h)(x) is equivalent to f(g(h(x)))
*
* @param fns - Functions to compose
* @returns Composed function that applies functions from right to left
*/
const compose = (...fns) => (value, ...args) => {
let result = value;
for (let i = fns.length - 1; i >= 0; i -= 1) {
result = fns[i](result, ...args);
}
return result;
};
function dropLast(value) {
return value.slice(0, -1);
}
/**
* Applies a set of transformations to an object and returns a new object with the transformed values.
*
* @example
* evolve({ count: (n) => n + 1 }, { name: 'item', count: 5 })
* // => { name: 'item', count: 6 }
*
* @param transformations - The transformations to apply
* @param object - The object to transform
* @returns The transformed object
*/
function evolve(transformations, object) {
const result = Object.create(null);
const keys = Object.keys(object);
for (let i = 0; i < keys.length; i += 1) {
const key = keys[i];
if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
continue;
}
const transformation = transformations[key];
if (typeof transformation === 'function') {
result[key] = transformation(object[key]);
}
else {
result[key] = object[key];
}
}
return result;
}
/**
* Checks if a value is null or undefined.
*
* @example
* isNil(null) // => true
* isNil(undefined) // => true
* isNil(0) // => false
*
* @param value - The value to check
* @returns True if the value is null or undefined, false otherwise
*/
const isNil = (value) => value === null || value === undefined;
/**
* Retrieves the value at a given path from an object.
*
* @example
* get({ a: { b: 1 } }, ['a', 'b'], 0) // => 1
* get({ a: { b: 1 } }, ['a', 'c'], 0) // => 0
*
* @param target - The object to retrieve the value from
* @param path - The path of the value to retrieve
* @param defaultValue - The default value to return if the path does not exist
* @returns The value at the given path, or the default value if the path does not exist
*/
const get = (target, path, defaultValue) => {
if (isNil(target))
return defaultValue;
const _path = castArray(path);
let result = target;
for (let i = 0; i < _path.length; i += 1) {
if (isNil(result))
return defaultValue;
result = result[_path[i]];
}
return isNil(result) ? defaultValue : result;
};
function last(value) {
return value === '' ? '' : value[value.length - 1];
}
/**
* Maps over the values of an object and applies a function to each value.
*
* @example
* mapValues({ a: 1, b: 2 }, (v) => v * 2) // => { a: 2, b: 4 }
*
* @param object - The object to map over
* @param fn - The function to apply to each value
* @returns A new object with the mapped values
*/
const mapValues = (object, fn) => {
const result = {};
const entries = Object.entries(object);
for (let i = 0; i < entries.length; i += 1) {
const [key, value] = entries[i];
if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
continue;
}
result[key] = fn(value, key, i);
}
return result;
};
const PERCENT_REGEX = /(-?\d+\.?\d*)%/;
/**
* Parses a percentage string and returns both the numeric value and decimal percent.
*
* @example
* matchPercent('50%') // => { value: 50, percent: 0.5 }
* matchPercent('-25%') // => { value: -25, percent: -0.25 }
* matchPercent('abc') // => null
*
* @param value - The value to parse
* @returns Object with value and percent, or null if not a valid percentage
*/
const matchPercent = (value) => {
const match = PERCENT_REGEX.exec(`${value}`);
if (match) {
const numericValue = parseFloat(match[1]);
const percent = numericValue / 100;
return { percent, value: numericValue };
}
return null;
};
/**
* Creates a new object by omitting specified keys from the original object.
*
* @example
* omit('b', { a: 1, b: 2, c: 3 }) // => { a: 1, c: 3 }
* omit(['a', 'c'], { a: 1, b: 2, c: 3 }) // => { b: 2 }
*
* @param keys - The key or keys to omit
* @param object - The original object
* @returns The new object without the omitted keys
*/
const omit = (keys, object) => {
const _keys = castArray(keys);
const copy = { ...object };
for (let i = 0; i < _keys.length; i += 1) {
delete copy[_keys[i]];
}
return copy;
};
/**
* Picks the specified keys from an object and returns a new object with only those keys.
*
* @example
* pick(['a', 'c'], { a: 1, b: 2, c: 3 }) // => { a: 1, c: 3 }
* pick(['x'], { a: 1, b: 2 }) // => {}
*
* @param keys - The keys to pick from the object
* @param object - The object to pick the keys from
* @returns A new object with only the picked keys
*/
const pick = (keys, object) => {
const result = {};
for (let i = 0; i < keys.length; i += 1) {
const key = keys[i];
if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
continue;
}
if (key in object)
result[key] = object[key];
}
return result;
};
/**
* Repeats an element a specified number of times.
*
* @example
* repeat('a', 3) // => ['a', 'a', 'a']
* repeat(0, 4) // => [0, 0, 0, 0]
* repeat('x') // => []
*
* @param element - Element to be repeated
* @param length - Number of times to repeat element (default: 0)
* @returns Array with the element repeated
*/
const repeat = (element, length = 0) => {
const result = new Array(length);
for (let i = 0; i < length; i += 1) {
result[i] = element;
}
return result;
};
/**
* Returns a new array with elements in reverse order. Does not mutate the original.
*
* @example
* reverse([1, 2, 3]) // => [3, 2, 1]
* reverse(['a', 'b']) // => ['b', 'a']
*
* @param array - Array to be reversed
* @returns New array with elements reversed
*/
const reverse = (array) => array.slice().reverse();
/**
* Converts the first character of a string to uppercase. Does not affect other characters.
*
* @example
* upperFirst('hello') // => 'Hello'
* upperFirst('hELLO') // => 'HELLO'
* upperFirst('') // => ''
* upperFirst(null) // => null
*
* @param value - The string to transform
* @returns String with first character uppercased, or the original value if null/undefined/empty
*/
const upperFirst = (value) => {
if (!value)
return value;
return (value.charAt(0).toUpperCase() + value.slice(1));
};
/**
* Returns a new array excluding the specified values.
*
* @example
* without([2, 4], [1, 2, 3, 4, 5]) // => [1, 3, 5]
* without(['b'], ['a', 'b', 'c']) // => ['a', 'c']
*
* @param exclude - Values to exclude from the array
* @param array - Array to filter
* @returns A new array without the excluded values
*/
const without = (exclude, array) => {
const result = [];
for (let i = 0; i < array.length; i += 1) {
const value = array[i];
if (!exclude.includes(value))
result.push(value);
}
return result;
};
/**
* Parse a string or number to a float. Non-string values pass through unchanged.
*
* @example
* parseFloat('3.14') // => 3.14
* parseFloat(42) // => 42
* parseFloat('10px') // => 10
* parseFloat(null) // => null
*
* @param value - The value to parse
* @returns Parsed float for strings, original value otherwise
*/
const parseFloat$1 = (value) => {
return (typeof value === 'string' ? Number.parseFloat(value) : value);
};
export { adjust, asyncCompose, capitalize, castArray, compose, dropLast, evolve, get, isNil, last, mapValues, matchPercent, omit, parseFloat$1 as parseFloat, pick, repeat, reverse, upperFirst, without };
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