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How to use the omitBy function from lodash

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

lodash.omitBy is a function in the Lodash library that creates a new object composed of object properties that do not meet a specified condition.

options.js

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  console.error(warnings.join('\n') + '\n')
}

// Delete all options containing dashes, because yargs already aliases them as camelCase
// This means we can process the camelCase version only after that
const opts = _.omitBy(parsedOptions, (value, key) => key.indexOf('-') >= 0)

// Default database file
if (!opts.databaseFile) {
  opts.databaseFile = path.join(opts.output, 'thumbsup.db')

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lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.now                 = _.now;
module.exports.nth                 = _.nth;
module.exports.nthArg              = _.nthArg;
module.exports.nths                = _.nths;
module.exports.omit                = _.omit;
module.exports.omitBy              = _.omitBy;
module.exports.omitWhen            = _.omitWhen;
module.exports.once                = _.once;
module.exports.orderBy             = _.orderBy;
module.exports.over                = _.over;

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+ 92 other calls in file

How does lodash.omitBy work?

lodash.omitBy is a function provided by the Lodash library that allows you to create a new object by excluding properties from an existing object that meet a specified condition. To use lodash.omitBy, you pass in an object and a callback function as arguments. The callback function is called for each property in the object, with the property value passed as an argument. If the callback function returns a truthy value, the corresponding property is excluded from the resulting object. If the callback function returns a falsy value, the corresponding property is included in the resulting object. The resulting object contains all of the properties from the original object that did not meet the specified condition. lodash.omitBy is similar to the lodash.pickBy function, which creates a new object by including properties from an existing object that meet a specified condition. lodash.omitBy is one of many functions provided by the Lodash library that simplify working with arrays, objects, and functions in JavaScript. It is particularly useful when you need to create a new object that is a subset of an existing object, but with some properties excluded based on a condition.

resourceList.ctrl.js

GitHub: gbif/portal16

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    delete query.locale;
    delete query.advanced;
    delete query.limit;
    delete query.offset;
    delete query.contentType;
    query = _.omitBy(query, angular.isUndefined);
    return $httpParamSerializer(query);
  };

vm.faqData = {};

classes.js

GitHub: navgurukul/sansaar

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  instances.start_time = UTCToISTConverter(startTimeParsed);
  instances.end_time = UTCToISTConverter(endTimeParsed);

  instances.calendar_event_id = e.id;
  instances.recurring_id = recurringClassEntry.id;
  const filteredInstance = _.omitBy(instances, _.isNull);
  recurringPayload.push(filteredInstance);
});
if (
  createPayload.frequency &&

+ 3 other calls in file

Ai Example

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const _ = require("lodash");

const myObject = {
  firstName: "John",
  lastName: "Doe",
  age: 30,
};

const newObject = _.omitBy(myObject, (value) => typeof value === "number");

console.log(newObject);

In this example, we first import the Lodash library and define an object myObject with three properties, including a property with a numeric value. We then use _.omitBy to create a new object newObject that excludes any properties with a numeric value. The callback function passed to _.omitBy takes a value argument and returns a truthy value if the property should be excluded from the new object. Finally, we log the resulting new object to the console using console.log. When you run this code, you should see a new object logged to the console with the age property excluded, because it has a numeric value. This example demonstrates how you can use _.omitBy to create a new object by excluding properties from an existing object that meet a specified condition.

base.js

GitHub: ebmdatalab/api

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  // FIXME: This is a workaround because Swagger doesn't allow nullable
  // fields. Check https://github.com/OAI/OpenAPI-Specification/issues/229.
  const isNullOrEmptyPlainObject = (value) => (value === null) || isEmptyPlainObject(value);

  return _.omitBy(attributes, isNullOrEmptyPlainObject);
},
toJSON(...args) {
  // FIXME: Bookshelf's virtuals plugin adds the virtual attributes
  // regardless of their value. We can't change this behaviour on

+ 7 other calls in file

lodash.js

GitHub: mdmarufsarker/lodash

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console.log(mergeWith); // => { 'a': [{ 'b': 1, 'c': 3 }, { 'd': 2, 'e': 4 }] }


const omit = _.omit({ 'a': 1, 'b': '2', 'c': 3 }, ['a', 'c']);
console.log(omit); // => { 'b': '2' }


const omitBy = _.omitBy({ 'a': 1, 'b': '2', 'c': 3 }, _.isNumber);
console.log(omitBy); // => { 'b': '2' }


const pick = _.pick({ 'a': 1, 'b': '2', 'c': 3 }, ['a', 'c']);
console.log(pick); // => { 'a': 1, 'c': 3 }

+ 15 other calls in file

ProcessorService.js

GitHub: topcoder-platform/legacy-member-processor

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  zip: _.get(addr, 'zip'),
  country_code: _.get(payload, 'countryCode'),
  address2: _.get(addr, 'streetAddr2')
})

const normalizedPayload = _.omitBy(rawPayload, _.isUndefined)
const keys = Object.keys(normalizedPayload)
const count = keys.length
const fields = ['create_date', 'modify_date', 'address_id', 'address_type_id'].concat(keys)
const values = ['current', 'current', '?', '?'].concat(_.fill(Array(count), '?'))

+ 39 other calls in file

mount-models.js

GitHub: Akemona/strapi

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    attribute: definition.attributes[name],
  });
});

const schema = new instance.Schema(
  _.omitBy(definition.loadedModel, ({ type }) => type === 'virtual')
);

const findLifecycles = ['find', 'findOne', 'findOneAndUpdate', 'findOneAndRemove'];

user.test.js

GitHub: programmersoham/Node-Express-App

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  // get users from database
  const dbUser = (await User.findOne({ email: user.email })).transform();


  // remove null and undefined properties
  return omitBy(dbUser, isNil);
}


describe('Users API', async () => {
  let adminAccessToken;

utils.js

GitHub: krieit/Node-vogels

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    AWS      = require('aws-sdk');


var utils = module.exports;


utils.omitNulls = function (data) {
  return _.omitBy(data, function(value) {
    return _.isNull(value) ||
      _.isUndefined(value) ||
      (_.isArray(value) && _.isEmpty(value)) ||
      (_.isString(value) && _.isEmpty(value));

BaseModel.js

GitHub: Alay2000/url_shortener

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     * @param {Partial<RecordBuilder>} builder
     * @returns {Partial<Record<keyof RecordBuilder, any>>}
     */
    serialize(builder) {
        // @ts-ignore
        return _.omitBy(builder, _.isUndefined);
    }


}

+ 8 other calls in file

user.model.js

GitHub: areen-order-hub/areen-api

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    throw error;
  }
},

async updateUser(id, updates) {
  updates = omitBy(updates, (each) => isNullorUndefined(each));
  await this.updateOne(
    {
      _id: id,
    },

+ 13 other calls in file

messages.js

GitHub: ayukuzmenko/test-case-api

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await update(
    {
        id: Number(id),
    },
    omitBy(values, isNil)
);

const data = await find({
    id: Number(id),

job.service.js

GitHub: perfect2021324/hourcrypto

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 * @throws JobNotFound
 *
 */
const findJob = async (filter, projection) => {
  let job = {}
  filter = _.omitBy(filter, _.isUndefined)
  if (_.isPlainObject(filter) && !_.isEmpty(filter))
    job = await Job.findOne(filter, projection).lean().exec()
  if (!job?._id) throw new JobNotFoundError()
  return job

+ 3 other calls in file

LeccionController.js

GitHub: CristianMisse96/SmartTest

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    respuestaCorrecta: row.respuestaCorrecta,
    valor: row.valor
  };
  //console.log( "***", data, row)
  if (data.retroalimentacion === '') delete data.retroalimentacion;
  data = _.omitBy(data, _.isNull);
  resultado = await Pregunta.update({ id: data.id }, data);
}

+ 2 other calls in file

ci_provider.js

GitHub: cypress-io/cypress

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  return _detectProviderName() || null
}


const omitUndefined = (ret) => {
  if (_.isObject(ret)) {
    return _.omitBy(ret, _.isUndefined)
  }
}


const _get = (fn) => {

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+ 4 other calls in file

update.js

GitHub: cym31153/arknights-toolbox

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);

// 精英化 & 技能
const skillId2Name = _.mapKeys(
  _.mapValues(
    _.omitBy(skillTable, (v, k) => k.startsWith('sktok_')),
    ({ levels }) => levels[0].name
  ),
  (v, k) => idStandardization(k)
);

+ 4 other calls in file

model.js

GitHub: sequelize/sequelize

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}));

options.type = QueryTypes.BULKUPDATE;

// Clone values so it doesn't get modified for caller scope and ignore undefined values
values = _.omitBy(values, value => value === undefined);

const updatedAtAttrName = modelDefinition.timestampAttributeNames.updatedAt;

// Remove values that are not in the options.fields

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+ 17 other calls in file

TestRunnerCommand.js

GitHub: pb2323/browserstack-detox

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/**
 * @param {DetoxInternals.CLIConfig} cliConfig
 * @param {Detox.DetoxDeviceConfig} deviceConfig
 */
_buildEnvOverride(cliConfig, deviceConfig) {
  return _.omitBy({
    DETOX_APP_LAUNCH_ARGS: cliConfig.appLaunchArgs,
    DETOX_ARTIFACTS_LOCATION: cliConfig.artifactsLocation,
    DETOX_CAPTURE_VIEW_HIERARCHY: cliConfig.captureViewHierarchy,
    DETOX_CLEANUP: cliConfig.cleanup,

DetoxConfigErrorComposer.js

GitHub: pb2323/browserstack-detox

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invalidServerProperty() {
  return new DetoxConfigError({
    message: `session.server property is not a valid WebSocket URL`,
    hint: `Expected something like "ws://localhost:8099".\nCheck that in your Detox config${this._atPath()}`,
    inspectOptions: { depth: 3 },
    debugInfo: _.omitBy({
      session: _.get(this.contents, ['session']),
      ...this._focusOnConfiguration(c => _.pick(c, ['session'])),
    }, _.isEmpty),
  });

+ 5 other calls in file

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