It's noop function. It does nothing.
Return an empty module, 'nuff said
No operation
one no-op function to rule them all
A chainable, callable mock object which always returns itself
Lightweight debugging utility for Node.js and the browser
Lodash modular utilities.
React is a JavaScript library for building user interfaces.
A querystring parser that supports nesting and arrays, with a depth limit
Higher-order functions and common patterns for asynchronous code
Babel compiler core.
inikulin
Calvein
hoho
mattdesl
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debug-js
lodash
facebook
ljharb
caolan
babel