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How to use the isEqual function from lodash

Find comprehensive JavaScript lodash.isEqual code examples handpicked from public code repositorys.

lodash.isEqual is a function that compares two values and returns true if they are equivalent, or false if they are not.

ObjectUtils.js

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// TODO: Move these functions to Universe and UserIntent model/class files.

export function areIntentsEqual(userIntent1, userIntent2) {
  return isDefinedNotNull(userIntent1) && isDefinedNotNull(userIntent2) && (_.isEqual(userIntent1.numNodes,userIntent2.numNodes)
  && _.isEqual(userIntent1.regionList.sort(), userIntent2.regionList.sort())
  && _.isEqual(userIntent1.deviceInfo, userIntent2.deviceInfo)
  && _.isEqual(userIntent1.replicationFactor, userIntent2.replicationFactor)
  && _.isEqual(userIntent1.provider, userIntent2.provider)
  && _.isEqual(userIntent1.universeName, userIntent2.universeName)
  && _.isEqual(userIntent1.ybSoftwareVersion, userIntent2.ybSoftwareVersion)

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+ 43 other calls in file

ApiSigningUtil.js

GitHub: GovTechSG/node-apex-api-security

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 * @public
 */
ApiSigningUtil.verifyHMACSignature = (signature, secret, message) => {
    winston.logEnter(signature, secret, message);
    winston.logExit(_.isEqual(signature, ApiSigningUtil.getHMACSignature(message, secret)));
    return _.isEqual(signature, ApiSigningUtil.getHMACSignature(message, secret));
};

/**
 * Create RSA256 Signature (Lw) with a given message

+ 15 other calls in file

How does lodash.isEqual work?

lodash.isEqual is a function that compares two values and returns true if they are equivalent, or false if they are not. When lodash.isEqual is called, it performs the following steps:

It first checks if the two values are strictly equal (i.e. ===), and if they are, it immediately returns true.
If the two values are not strictly equal, it checks if they are both objects. If they are not both objects, it immediately returns false.
If both values are objects, it checks if they have the same number of properties. If they don't, it returns false.
If the two objects have the same number of properties, it iterates over each property and compares its value with the corresponding property on the other object. If any properties have different values, it returns false.
If all properties on both objects have the same value, lodash.isEqual returns true.

Here's an example of how you could use lodash.isEqual to compare two objects:

javascript
const _ = require('lodash');

const obj1 = { name: 'John', age: 30 };
const obj2 = { name: 'John', age: 30 };
const obj3 = { name: 'Jane', age: 25 };

console.log(_.isEqual(obj1, obj2)); // Output: true
console.log(_.isEqual(obj1, obj3)); // Output: false

In this example, we're requiring the lodash package and importing the isEqual function from it.

We're then defining three objects: obj1, obj2, and obj3. obj1 and obj2 have the same properties and values, while obj3 has different values.

We're then calling _.isEqual with obj1 and obj2 as arguments. Since these two objects have the same properties and values, the function returns true.

We're also calling _.isEqual with obj1 and obj3 as arguments. Since these two objects have different values for the name and age properties, the function returns false.

astrobench.js

GitHub: Irrelon/ForerunnerDB

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* var copy = { 'name': 'fred' };
*
* object == copy;
* // => false
*
* _.isEqual(object, copy);
* // => true
*
* var words = ['hello', 'goodbye'];
* var otherWords = ['hi', 'goodbye'];

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data.js

GitHub: taskcluster/taskcluster

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      'description',
      'config',
      'owner',
      'emailOnError',
    ];
    return _.isEqual(_.pick(other, fields), _.pick(this, fields));
  }
}


class WorkerPoolError {

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+ 5 other calls in file

Ai Example

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const _ = require("lodash");

const obj1 = { name: "John", age: 30 };
const obj2 = { name: "John", age: 30 };
const obj3 = { name: "Jane", age: 25 };

console.log(_.isEqual(obj1, obj2)); // Output: true
console.log(_.isEqual(obj1, obj3)); // Output: false

In this example, we're requiring the lodash package and importing the isEqual function from it. We're then defining three objects: obj1, obj2, and obj3. obj1 and obj2 have the same properties and values, while obj3 has different values. We're then calling _.isEqual with obj1 and obj2 as arguments. Since these two objects have the same properties and values, the function returns true. We're also calling _.isEqual with obj1 and obj3 as arguments. Since these two objects have different values for the name and age properties, the function returns false.

data.js

GitHub: taskcluster/taskcluster

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    return false;
  }


  // Compare "important" fields to another task (used to check idempotency)
  equals(other) {
    return _.isEqual(
      _.omit(other, STATUS_FIELDS),
      _.omit(this, STATUS_FIELDS));
  }
}

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+ 3 other calls in file

lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.isBuffer            = _.isBuffer;
module.exports.isDate              = _.isDate;
module.exports.isDecreasing        = _.isDecreasing;
module.exports.isElement           = _.isElement;
module.exports.isEmpty             = _.isEmpty;
module.exports.isEqual             = _.isEqual;
module.exports.isEqualWith         = _.isEqualWith;
module.exports.isError             = _.isError;
module.exports.isEven              = _.isEven;
module.exports.isFinite            = _.isFinite;

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middlewares.js

GitHub: Pythagora-io/pythagora

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else {
    let fileContent = JSON.parse(fs.readFileSync(endpointFileName));
    let identicalRequestIndex = fileContent.findIndex(req => {
        return req && _.isEqual(req.body, reqData.body) &&
            req.method === reqData.method &&
            _.isEqual(req.query, reqData.query) &&
            _.isEqual(req.params, reqData.params) &&
            _.isEqual(req.statusCode, reqData.statusCode) &&
            compareResponse(req.responseData, reqData.responseData);
    });

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contentful.js

GitHub: nsbarsukov/ml-bug-detector

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  if (_.isEmpty(array) || !existy(array)) return [];

  var fst    = _.first(array);
  var fstVal = fun(fst);
  var run    = concat.call([fst], _.takeWhile(_.rest(array), function(e) {
    return _.isEqual(fstVal, fun(e));
  }));

  return concat.call([run], _.partitionBy(_.drop(array, _.size(run)), fun));
},

+ 176 other calls in file

index.js

GitHub: sluukkonen/iiris

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params: [num1, num10, num100, num1000],
benchmarks: (obj) => {
  const clone = _.cloneDeep(obj)
  return {
    iiris: () => I.equals(obj, clone),
    lodash: () => _.isEqual(obj, clone),
    ramda: () => R.equals(obj, clone),
    native: () => util.isDeepStrictEqual(obj, clone),
  }
},

+ 9 other calls in file

DatePickerTextFieldComponent.js

GitHub: olivajames110/phoenix

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//       const readableDateOriginal = parseISOToDate(originalValIsoString);

//       const currentValIsoString = parseDateStringToIsoString(val);
//       const readableDateCurrent = parseISOToDate(currentValIsoString);

//       let isModified = _.isEqual(readableDateCurrent, readableDateOriginal);
//       props.onChange(props.input.name, val, isModified);
//     }
//     setValue(val);
//     change(props.input.name, val);

lodash.js

GitHub: mdmarufsarker/lodash

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console.log(isElement); // => true


const isEmpty = _.isEmpty({});
console.log(isEmpty); // => true


const isEqual = _.isEqual({ 'a': 1 }, { 'a': 1 });
console.log(isEqual); // => true


const isEqualWith = _.isEqualWith({ 'a': 1 }, { 'a': 1 }, (a, b) => a === b);
console.log(isEqualWith); // => true

+ 15 other calls in file

controller.read.js

GitHub: RedHatInsights/insights-remediations

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            const org_id = _.chain(batchDetailInfo[system].facts)
            .find(SATELLITE_NAMESPACE)
            .get('facts.organization_id')
            .toString(); //organization_id is an int (boo!)

            return _.isEqual(org_id, sat_org_id);
        });
    });
}

+ 4 other calls in file

scene-load.js

GitHub: MrPrimate/ddb-adventure-muncher

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if (sceneUpdateDiff.flags) delete sceneUpdateDiff.flags;

// final diff
console.log("********************");

const dataMatch = _.isEqual(JSON.parse(JSON.stringify(inData)), JSON.parse(JSON.stringify(sceneData)));
const sceneDataFlags = sceneData.flags && sceneData.flags.ddb.versions;
if (!sceneDataFlags) console.log("Updating to add scene data version flag");
const versionFlags = inData.flags.ddb.versions;
console.log("Data match: " + dataMatch);

+ 4 other calls in file

aql-graph-traversal-generic-tests.js

GitHub: arangodb/arangodb

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// Peek at the next path to check the right child next
const nextPath = _.head(remainingPaths);
assertNotNull(nextPath, 'No more remaining paths, but expecting one of '
  + JSON.stringify(remainingChildren.map(c => c.toObj())));
const nextChildIndex = _.findIndex(remainingChildren, (node) =>
  _.isEqual(nextPath, curStack.concat([node.vertex]))
);
assertNotEqual(-1, nextChildIndex,
  `The following path is not valid at this point: ${JSON.stringify(nextPath)}
    But one of the following is expected next: ${JSON.stringify(remainingChildren.map(node => curStack.concat([node.vertex])))}

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fetchPackageExtra.js

GitHub: openupm/openupm

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const scopeSet = new Set();
// cached package meta: { name: meta }
const cachedPackageMetas = {};
while (pendingList.length > 0) {
  const entry = pendingList.shift();
  if (processedList.find(x => _.isEqual(x, entry)) === undefined) {
    // add entry to processed list
    processedList.push(entry);
    // skip unity module
    if (/com.unity.modules/i.test(entry.name)) continue;

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test_variant.js

GitHub: node-opcua/node-opcua

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const should = require("should");
const { assert } = require("node-opcua-assert");


const ul = require("lodash");
const uu = require("underscore");
const sameVariantSlow1 = ul.isEqual;
const sameVariantSlow2 = uu.isEqual;


const ec = require("node-opcua-basic-types");
const { QualifiedName, LocalizedText } = require("node-opcua-data-model");

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externalCQLHandler.js

GitHub: AHRQ-CDS/AHRQ-CDS-Connect-Authoring-Tool

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  Object.keys(elementReturnTypes).forEach(key => {
    returnTypesMatch = returnTypesMatch && statementReturnTypes[key] === elementReturnTypes[key];
    const statementArgsToMatch = deleteNestedMetadataProps(_.cloneDeep(statementArgs[key]));
    const elementArgsToMatch = deleteNestedMetadataProps(_.cloneDeep(elementArgs[key]));
    argsMatch = argsMatch && _.isEqual(statementArgsToMatch, elementArgsToMatch);
  });


  return returnTypesMatch && argsMatch;
};

policySearchHandler.js

GitHub: dod-advana/gamechanger-web

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let intelligentSearchResult = {};

// combined search: run if not clone + sort === 'relevance' + flag enabled
const verbatimSearch = searchText.startsWith('"') && searchText.endsWith('"');
const noFilters = _.isEqual(searchFields, { initial: { field: null, input: '' } });
const noSourceSpecified = _.isEqual([], orgFilterString);
const noPubDateSpecified = req.body.publicationDateAllTime;
const noTypeSpecified = _.isEqual([], typeFilterString);
let combinedSearch = await this.app_settings.findOrCreate({
	where: { key: 'combined_search' },

+ 11 other calls in file

index.js

GitHub: apostrophecms/apostrophe

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  append(patch.$push);
} else if (patch.$pullAll) {
  _.each(patch.$pullAll, function(val, key) {
    cloneOriginalBase(key);
    self.apos.util.set(patch, key, _.differenceWith(self.apos.util.get(patch, key) || [], Array.isArray(val) ? val : [], function(a, b) {
      return _.isEqual(a, b);
    }));
  });
} else if (patch.$pullAllById) {
  _.each(patch.$pullAllById, function(val, key) {

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node.js

GitHub: cubedro/eth-net-intelligence-api

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	});
}


Node.prototype.changed = function ()
{
	var changed = ! _.isEqual( this._lastStats, JSON.stringify(this.stats) );


	return changed;
}

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