Fast deep equal

node's assert.deepEqual algorithm

node's assert.deepEqual algorithm except for NaN being equal to NaN

Constant-time comparison of Buffers

return whether two buffers are equal

Are these two JavaScript values equal?

Tiny deep equal comparator

A JavaScript text diff implementation.

Fastest deep equal comparison for React. Great for React.memo & shouldComponentUpdate. Also really fast general-purpose deep comparison.

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Compare DNS record strings for equality

Check if two arrays are equal

Improved deep equality testing for Node.js and the browser.

Adaptation of react-addons-shallow-compare, for independent usage

Determine two file paths are equal

A robust, ES3 compatible, "has own property" predicate.

chai plugin to match objects and arrays deep equality with arrays (including nested ones) being in any order

What is the type of this builtin JS value?

Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

Does a shallow comparison of two objects, returning false if the keys or values differ.