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two-equals.js
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two-equals.js
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/**
* (c) Ricardo Moreno <[email protected]>
*
* For more details about of the license of this source code,
* please see the file LICENSE.
*/
'use strict';
/* Dependencies */
const areObjects = require('are-objects');
const areArrays = require('are-arrays');
/* Export module */
module.exports = equals;
/**
* equals
*
* @param {any} a
* @param {any} b
* @returns {boolean}
*/
function equals (a, b) {
if (a === b) {
return true;
} else if (areObjects(a, b)) {
if (areArrays(a, b)) {
if (!equals(a.length, b.length)) {
return false;
}
for (let i = 0; i < a.length; i++) {
if (!equals(a[i], b[i])) {
return false;
}
}
// At least one should be a array.
} else if (Array.isArray(a) || Array.isArray(b)) {
if (!areArrays(a, b)) {
return false;
}
} else {
const keysA = Object.keys(a);
const keysB = Object.keys(b);
if (equals(keysA, keysB)) {
for (let i = 0; i < keysA.length; i++) {
if (!equals(a[keysA], b[keysB])) {
return false;
}
}
} else {
return false;
}
}
return true;
} else {
return false;
}
}