What is boolbase?
The boolbase npm package is a very simple utility library that provides two basic functions: one that always returns true and another that always returns false. These functions can be used as default or placeholder callbacks, particularly in scenarios where a truthy or falsy value is needed to determine the flow of logic.
What are boolbase's main functionalities?
Always return true
This feature provides a function that, when called, will always return the boolean value true. It can be used in situations where a callback is required that always approves or passes a condition.
const { trueFunc } = require('boolbase');
console.log(trueFunc()); // outputs: true
Always return false
This feature provides a function that, when called, will always return the boolean value false. It can be used in situations where a callback is required that always rejects or fails a condition.
const { falseFunc } = require('boolbase');
console.log(falseFunc()); // outputs: false
Other packages similar to boolbase
lodash
Lodash is a comprehensive utility library that offers a wide range of functions for manipulating and working with data. It includes methods like _.constant which can be used to create functions that return the same value. Lodash is much larger and more feature-rich compared to the minimalistic boolbase.
underscore
Underscore is another utility library similar to Lodash, providing a range of functions for working with arrays, objects, and functions. It includes the _.constant function for creating functions that return a specific value. Like Lodash, it is more extensive than boolbase.
ramda
Ramda is a functional programming utility library that emphasizes a purer functional style. It includes R.always, a function that returns a function that always returns the same value. Ramda offers a more functional approach and has a broader set of features compared to boolbase.
#boolbase
This very simple module provides two basic functions, one that always returns true (trueFunc
) and one that always returns false (falseFunc
).
###WTF?
By having only a single instance of these functions around, it's possible to do some nice optimizations. Eg. CSSselect
uses these functions to determine whether a selector won't match any elements. If that's the case, the DOM doesn't even have to be touched.
###And why is this a separate module?
I'm trying to modularize CSSselect
and most modules depend on these functions. IMHO, having a separate module is the easiest solution to this problem.