@react-dnd/shallowequal
Like lodash isEqualWith but for shallow equal.
Last updated a year ago by darthtrevino .
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shallowequal is like lodash's isEqual (v3.10.1) but for shallow (strict) equal.

shallowequal(value, other, [customizer], [thisArg])

Performs a shallow equality comparison between two values (i.e. value and other) to determine if they are equivalent.

The equality check returns true if value and other are already strictly equal, OR when all the following are true:

  • value and other are both objects with the same keys
  • For each key, the value in value and other are strictly equal (===)

If customizer (expected to be a function) is provided it is invoked to compare values. If customizer returns undefined (i.e. void 0), then comparisons are handled by the shallowequal function instead.

The customizer is bound to thisArg and invoked with three arguments: (value, other, key).

NOTE: Docs are (shamelessly) adapted from lodash's v3.x docs

Install

$ yarn add shallowequal
# npm v5+
$ npm install shallowequal
# before npm v5
$ npm install --save shallowequal

Usage

const shallowequal = require("shallowequal");

const object = { user: "fred" };
const other = { user: "fred" };

object == other;
// → false

shallowequal(object, other);
// → true

Credit

Code for shallowEqual originated from https://github.com/gaearon/react-pure-render/ and has since been refactored to have the exact same API as lodash.isEqualWith (as of v4.17.4).

Development

Chores

  • Lint: yarn lint
  • Test: yarn test
  • Pretty: yarn pretty
  • Prepare: yarn prepare

License

MIT.

Current Tags

  • 2.0.0                                ...           latest (a year ago)

1 Versions

  • 2.0.0                                ...           a year ago
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