@dougross/lotide v1.0.0

Lotide

A mini clone of the Lodash library.

Purpose

BEWARE: This library was published for learning purposes. It is not intended for use in production-grade software.

This project was created and published by me as part of my learnings at Lighthouse Labs.

Usage

Install it:

npm install @dougross/lotide

Require it:

const _ = require('@dougross/lotide');

Call it:

const results = _.tail([1, 2, 3]) // => [2, 3]

Documentation

The following functions are currently implemented:

• assertArraysEqual: Asserts whether two arrays are equal or not. If the arrays are equal, it logs a success message; otherwise, it logs a failure message with details of the differences between the arrays.
• assertEqual(): Asserts whether two values are equal or not. If the values are equal, it logs a success message; otherwise, it logs a failure message with details of the differences between the values.
• assertObjectsEqual(): Asserts whether two objects are equal or not. If the objects are equal, it logs a success message; otherwise, it logs a failure message with details of the differences between the objects.
• countLetters(): Counts the occurrences of each letter in a given string and returns an object with the letter counts.
• countOnly(): Counts the occurrences of specified items in an array of items and returns an object with the item counts.
• eqArrays(): Compares two arrays for equality and returns a boolean indicating whether they are equal or not.
• eqObjects(): Compares two objects for equality and returns a boolean indicating whether they are equal or not. The comparison is done recursively for nested objects.
• findKey(): Finds the first key in an object that satisfies a given callback function and returns the key as a string.
• findKeyByValue(): Finds the key in an object that corresponds to a given value and returns the key as a string.
• flatten(): Flattens a nested array and returns a new array with all the elements flattened to a single level.
• head(): Returns the first element of an array.
• letterPositions(): Finds the positions of all the letters in a given string and returns an object with the letter positions.
• map(): Applies a callback function to each element of an array and returns a new array with the results.
• middle(): Returns the middle element(s) of an array. If the array has an odd length, a single middle element is returned; if the array has an even length, an array containing the two middle elements is returned.
• tail(): Returns a new array containing all elements of the input array except the first element.
• takeUntil(): Returns a new array with elements from the beginning of the input array until a callback function returns a truthy value.
• without(): Returns a new array with all occurrences of specified items removed from the input array.