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 @alon.codes/lotide

Require it:

const _ = require('@alon.codes/lotide');

Call it:

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

Documentation

The following functions are currently implemented:

buildSequence(number, multiple):

Generates a linear number sequence based on the number of iterations and the multiple,

countLetters(string)

Counts the number of times each letter occurs in a string and returns it as an object.

countOnly(allItems, itemsToCount)

Takes an array and an object.

• If a key in the object has value true, the function counts how many times the key occurs in the array.
• If a key in the object has value false, the function ignores the key.

eqArrays(array1, array2)

Takes 2 arrays and determines if they're equal to each other.

eqObjects(object1, object2)

Takes 2 objects and determines if they're equal to each other.

findKey(object, callback)

Scans the object and returns the first key for which the callback function returns truthy.

• If no value with that callback function is found, then it should return undefined.

findKeyByValue(object, value)

Scans the object and returns the first key which contains the given value.

• If no key with that given value is found, then it should return undefined.

flatten(array)

Takes an array and pushes all of its contents one by one into a new array.

head(array)

Returns the first value if the array has values in it.

letterPositions(sentence)

Returns the index positions of every letter in a sentence while ignoring spaces and non-letter characters

map(array, callback)

Takes an array and transforms its values according to the callback function

middle(array)

Finds the middle value of an array.

• If array has odd number of values returns the middle one.
• If array has even number of values returns the two closest to the middle.
• If array has 2 or fewer values, returns blank array [].

tail

Returns the values in an array except for the first one.

• Returns a blank array [] if there are fewer than 2 values.

takeUntil(array, callback)

Takes an array and a callback and returns the first index value for which the callback function returns true.

without(source, itemsToRemove)

Takes an array and returns it without the items you asked to be removed.