Utility Library

This library tries to have efficient functions for almost any need when you are writing software in JavaScript, TypeScript and/or Node.js. The library is written in TypeScript, so you have full type support when you use it.

If you need a function or feature that is not present in this library, please send me a message or open a Pull Request requesting the feature and I will do my best to include it.

Installation

$ npm i -S @devnetic/utils

Usage

// commonjs
const { dateFormat } = require('@devnetic/utils)

const date = new Date('2020-04-24T18:12:02.432')

dateFormat(date, 'HH:mm:ss') // 18:12:02
dateFormat(date, 'hh:mm:ss a') // 06:12:02 pm

// ES Module
import { dateFormat } from '@devnetic/utils'

const date = new Date('2020-04-24T18:12:02.432')

dateFormat(date, 'HH:mm:ss') // 18:12:02
dateFormat(date, 'hh:mm:ss a') // 06:12:02 pm

Documentation

1. Array
2. Date
3. Function
4. Math
5. Misc
6. Number
7. Object
8. Random
9. String
10. Validator

Array Functions

• accumulate: Create an array of cumulative sum.
• alphabet: Generate an array of alphabet characters.
• average: Get the average of an array.
• cartesianProduct: Create cartesian product.
• castArray: Casts value as an array if it's not one.
• chunk: Split an array into chunks.
• closest: Find the closest number from an array
• countBy: Count by the properties of an array of objects.
• countOccurrences: Count the occurrences of array elements.
• countOccurrencesBy: Count the occurrences of a given value in an array.
• division: Calculate the division of arguments.
• flatten: Flatten an array.
• getConsecutiveArrays: Get all arrays of consecutive elements.
• getIndicesOf: Get indices of a value in an array.
• getIntersection: Get the intersection of arrays.
• getMaxIndex: Find the index of the maximum item of an array
• getMinIndex: Find the index of the minimum item of an array
• getNthElements: Get all n-th items of an array.
• getSubsets: Get all subsets of an array.
• groupBy: Group an array of objects by a key.
• lastIndex: Find the index of the last matching item of an array.
• longestStringIndex: Find the index of the longest string in an array.
• maxBy: Find the maximum item of an array by given key.
• minBy: Find the minimum item of an array by given key.
• partition: Partition an array based on a condition.
• range: Create an array of numbers in the given range.
• ranking: Get the rank of an array of numbers
• repeat: Repeat an array.
• shuffle: Shuffle an array.
• sortBy: Sort an array of items by given key.
• swapItems: Swap two array items.
• transpose: Swap the rows and columns of a matrix.
• union: Get union of arrays.
• unique: Get the unique values of an array.
• unzip: Unzip an array of arrays
• zip: Zip multiple arrays.

Date Functions

• dateExtract: Extract year, month, day, hour, minute, second and millisecond from a date.
• dateFormat: Returns a date formatted according to given format.
• daysInMonth: Get the number of days in given month.
• daysInYear: Get the total number of days in a year
• daysDiff: Calculate the number of difference days between two dates.
• firstDateOfMonth: Get the first date in the month of a date
• formatSeconds: Convert seconds to hh:mm:ss format
• getQuarter: Get the current quarter of a date.
• getTimezone: Get the timezone string.
• getWeekday: Get the weekday of a date.
• lastDateOfMonth: Get the last date in the month of a date.
• monthDiff: Calculate the number of difference days between two dates.
• msToTime: Transform a duration in milliseconds to human readable 'HH:mm:ss.m' format
• suffixDate: Add AM PM suffix to an hour.
• tomorrow: Get the tomorrow date.
• yesterday: Get the yesterday date.

Function Utilities

• boxHandler: Defines a box handler function using a functional programming technique called the "iterator pattern."
• compose: Compose functions from right to left.
• curry: Is a function that takes one argument at a time and returns a new function expecting the next argument.
• memoize: Returns the memoized (cached) function.
• noop: Create an empty function.
• once: Ensures a function is called only once.
• partial: Creates a function that invokes fn with partials prepended to the arguments it receives.
• pipe: Compose functions from left to right.
• unary: Create a function that accepts a single argument.
• uncurry: Converts a curried function to a function with a optional depth parameter.
• xor: Logical xor operator.

Math Functions

• containsRect: Check if a rectangle contains other one.
• degreesAngle: ## degreesToRadians(degrees: number): number
• degreesToRadians: Convert degrees to radians.
• distance: Calculate the distance between two points.
• isPointInside: Check if a point is inside a rectangle.
• lerp: Calculate the linear interpolation between two numbers.
• midpoint: Calculate the midpoint between two points.
• normalizeRatio: Normalize the ratio of a number in a range.
• overlaps: Check if a rectangle overlaps other one.
• radiansAngle: Calculate the angle in radians of a line defined by two points.
• radiansToDegrees: Convert radians to degrees.
• roundToNearest: Round a number to the nearest multiple of a given value.

Misc Functions

• celsiusToFahrenheit: Convert Celsius to Fahrenheit.
• coalesce: Get the first defined and non null argument.
• counter: Generate an unique and increment id.
• crc32: Returns the crc32 checksum of string as an integer.
• decimalToHex: Returns a string containing a hexadecimal representation of the given unsigned value
• diceRoll: Emulate a dice throw.
• fahrenheitToCelsius: Convert Fahrenheit to Celsius
• getQueryStringValue: Get the value of a param from a URL.
• getType: This function returns the value type, but this function is not just a typeof wrapper.
• hexToRgb: Convert hex to rgb.
• matchAll: Perform a global regular expression match. Searches subject for all matches to
• rgbToHex: Convert rgb color to hex.
• async: Run Promises in sequence.
• toFullHexColor: Convert 3 digits color to 6 digits color.
• uuid: This function returns all matches for the given RegEx.

Number Functions

• addOrdinalSuffix: Add an ordinal suffix to a number.
• clamp: Clamp a number between two values.
• decimalToBinary: Convert decimal to binary.
• digits: Get the arrays of digits from a number
• factorial: Calculate the factorial of a number.
• fibonacci: Calculate Fibonacci numbers.
• gcd: Compute the greatest common divisor between two numbers.
• multiply: Multiply arguments.
• prefixWithZeros: Prefix an integer with zeros.
• remainder: Calculate the remainder of division of arguments.
• round: Round a number to a given number of digits.
• subtract: Subtract arguments.
• sum: Calculate the sum of arguments.
• truncate: Truncate a number to a given number of decimal places without rounding.

Object Functions

• clone: Recursively clones an object. An empty object is returned for uncloneable values such as error WeakMaps.
• createObject: Create an empty map that does not have properties.
• fromEntries: This function transforms a list of key-value pairs into an object.
• getValue: Get the value at given path of an object.
• invert: Invert keys and values of an object.
• merge: Recursively merges own and inherited enumerable string keyed properties of source objects into the destination object.
• omit: Omit a subset of properties from an object
• pick: Pick a subset of properties of an object.
• pluck: Extract values of a property from an array of objects.
• remove: Remove keys from an object where the predicate return truthy.
• removeNullish: Remove all null and undefined properties from an object.
• renameKeys: Immutably rename object keys.
• setValue: Sets the value to the path of the object.
• sortKeys: Sort an object by its properties.

Random Functions

• generateString: Generate a random string from given characters.
• randomArrayInRange: Generate an array of random integers in a given range.
• randomBoolean: Generate a random boolean.
• randomFloat: Generate a random floating point number in given range.
• randomHexColor: Generate a random hex color.
• randomInteger: Generate a random integer in given range.
• randomIpAddress: Generate a random IP address.
• randomItem: Get a random item from an array.
• randomItems: Get random items of an array.
• randomProperty: Pick a random property of an object.
• randomString: Generate a random string using Node crypto module.

String Functions

• areAnagram: Check if two strings are anagram.
• base64ToUint8Array: Convert a base64 encoded string to an uint8 array.
• baseUrl: Get the base URL without any parameters.
• byteLength: Get the length of a string in bytes.
• camelCase: Convert a string to camel case.
• capitalize: Capitalize a string.
• countWordOccurrences: Count the occurrences of a character in a string.
• countWords: Count the number of words in a string.
• decapitalize: Decapitalize a string.
• escapeHtml: Escape HTML special characters.
• fileExtension: Get the file extension from a file name.
• fileName: Get the file name from a path.
• hash: Generate a hash of a string. For XOF hash functions such as shake256.
• isPalindrome: Check if a string is a palindrome.
• isRepeatedSequence: Check if a string consists of a repeated character sequence.
• kebabCase: Converts string to kebab case.
• lcfirst: Convert the first character of a string to lowercase.
• mask: Replace the first given number of characters of a string with another character.
• normalizePath: Normalize file path slashes.
• pascalCase: Convert a string to pascal case (upper camelcase).
• plural: Pluralize any word.
• prependLineNumbers: Prepend a line number to each line of a text document.
• removeDuplicateLines: Remove duplicate lines of a text document.
• removeEmptyLines: Remove empty lines of a text document.
• removeSpaces: Remove spaces from a string.
• repeatString: Repeat a string.
• reverseLines: Reverse the order of lines of a text.
• reverseString: Reverse a string.
• romanToArabic: Convert from Roman number to Arabic number.
• singular: Return the singular value of a word.
• snakeCase: Converts string to snake case.
• sortCharacters: Sort the characters of a string in the alphabetical order.
• sortLines: Sort lines of a text document in the alphabetical order.
• stripAnsiCodes: Strip ANSI codes from a string.
• swapCase: Swap case of characters in a string.
• template: Format a string using a template.
• titleCase: Transform a string into title case following English rules.
• trim: Trim some character.
• truncateWords: Truncate a string at full words.
• ucwords: Uppercase the first character of each word in a string.
• uint8ArrayToBase64: Convert an uint8 array to a base64 encoded string.
• unescapeHtml: Unescape HTML special characters.

Validator Functions

• areEqual: Check if all items in an array are equal.
• contains: Check if an array contains a value matching some criterias.
• containsLowerCase: Check if a string contains lower case characters.
• containsUpperCase: Check if a string contains upper case characters.
• containsWhitespace: Check if a string contains whitespace.
• hasDuplicateValues: Check if a flat array has duplicate values.
• isAlpha: Check if a string contains only letters.
• isAlphanumeric: Check if a string contains only letters and numbers.
• isAscii: Check if a string contains only ASCII characters.
• isAsyncFunction: Check if a value is an async function.
• isBase32: Check if a value is base32 encoded.
• isBase58: Check if a value is base58 encoded.
• isBase64: Check if a value is base64 encoded.
• isBetween: Check if a date is between two dates.
• isBic: Check if a value is a business identifier code.
• isBoolean: Checks if value is classified as a boolean primitive or object.
• isCurrentYear: Check if a date occurs in the current year.
• isEmptyObject: Check if an object is empty.
• isEqual: This function evaluate equality between two values.
• isEven: Check if a number is even.
• isFalsy: Validate if a value is Falsy.
• isFloat: This function check is a value is a valid float value.
• isFunction: Check if a value is a function.
• isGeneratorFunction: Check if a value is a generator function.
• isHexadecimal: Check if a string is a hexadecimal number.
• isHexColor: Check if a string is a hexadecimal color.
• isInRange: Check if a number is in a given range.
• isInteger: This function check is a value is a valid float value.
• isJSON: This function check is a value is a valid JSON value.
• isLeapYear: Check if a year is leap year.
• isLowerCase: Check if a string is lower case.
• isMongoId: Check if a string is a MongoDB ObjectId.
• isNegative: Check if a number is negative.
• isNil: Check if a value is nil.
• isNotEmpty: Check if an array is not empty.
• isNumber: This function checks if value is classified as a Number primitive or object.
• isNumeric: This function check is a string value is a valid numeric value.
• isObject: Check if a value is an object.
• isOctal: Check if a string is an octal number.
• isOdd: Check if a number is odd.
• isPlainObject: Check if a value is a plain object.
• isPositive: Check if a number is positive.
• isPrime: Check if a given integer is a prime number.
• isPromise: Check if an object is a Promise.
• isRegExp: Check if a value is a regular expression.
• isString: Check if a value is a string.
• isSubsetOf: Check if an array is subset of other array.
• isToday: Check if a date is today.
• isTruthy: Validate if a value is truethy.
• isUpperCase: Check if a string is upper case.
• isValidDate: Validate a Gregorian date.
• isWeekday: Check if a date is a weekday.
• isWeekend: Check if a date is a weekend.

About

This project is developed by Álvaro José Agámez Licha. I love building products and sharing knowledge.

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