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How to use the isArray function from lodash

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

lodash.isArray is a function that determines whether a value is classified as an Array object.

ObjectUtils.js

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export function isDefinedNotNull(obj) {
  return (typeof obj !== "undefined" && obj !== null);
}

export function isEmptyArray(arr) {
  return _.isArray(arr) && arr.length === 0;
}

export function isNonEmptyArray(arr) {
  return _.isArray(arr) && arr.length > 0;

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+ 7 other calls in file

propertyFactory.js

GitHub: microsoft/FluidFramework

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}

// Run over all parents and insert them into the parents array
if (template.inherits) {
	// We have to distinguish the cases where the parents are either specified as a single string or an array
	var parents = _.isArray(template.inherits) ? template.inherits : [template.inherits];

	for (var i = 0; i < parents.length; i++) {
		// Mark it as parent
		out_parents[parents[i]] = true;

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How does lodash.isArray work?

lodash.isArray is a method that checks if a given value is an array or not by inspecting its prototype chain. If the value is an array, the method returns true; otherwise, it returns false.

astrobench.js

GitHub: Irrelon/ForerunnerDB

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 * });
 *
 * _.isArray(squares);
 * // => false
 *
 * _.isArray(squares.value());
 * // => true
 */
function lodash(value) {
  // don't wrap if already wrapped, even if wrapped by a different `lodash` constructor

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+ 9 other calls in file

netbot.js

GitHub: firewalla/firewalla

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const target = msg.target
let policyData = value[o]

log.info(o, target, policyData)
if (o === "tags" && _.isArray(policyData)) {
  policyData = policyData.map(String);
}

if (target === "0.0.0.0") {

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+ 9 other calls in file

Ai Example

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const _ = require("lodash");

console.log(_.isArray([1, 2, 3])); // true
console.log(_.isArray("string")); // false
console.log(_.isArray({ key: "value" })); // false

In this example, we use the _.isArray() function from the lodash library to determine whether the provided value is an array. The function returns true if the value is an array and false otherwise.

lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.invert              = _.invert;
module.exports.invertBy            = _.invertBy;
module.exports.invoke              = _.invoke;
module.exports.invokeMap           = _.invokeMap;
module.exports.isArguments         = _.isArguments;
module.exports.isArray             = _.isArray;
module.exports.isArrayBuffer       = _.isArrayBuffer;
module.exports.isArrayLike         = _.isArrayLike;
module.exports.isArrayLikeObject   = _.isArrayLikeObject;
module.exports.isAssociative       = _.isAssociative;

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+ 92 other calls in file

ChallengeService.js

GitHub: topcoder-platform/challenge-api

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  currentUser &&
  (currentUser.isMachine ||
    _hasAdminRole ||
    _.includes(config.SELF_SERVICE_WHITELIST_HANDLES, currentUser.handle.toLowerCase()));

const includedTrackIds = _.isArray(criteria.trackIds) ? criteria.trackIds : [];

const includedTypeIds = _.isArray(criteria.typeIds) ? criteria.typeIds : [];

if (criteria.type) {

utils.ts

GitHub: JamilOmar/lsc

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 * @returns {Array} A list of LabShare package dependencies or an empty array
 * @private
 */
function getPackageDependencies(manifest): PackageDependencies | string[] {
  return _.isObject(manifest) && _.isObject(manifest.packageDependencies)
    ? _.isArray(manifest.packageDependencies)
      ? manifest.packageDependencies
      : Object.keys(manifest.packageDependencies)
    : [];
}

prompts.js

GitHub: entando/generator-jhipster-entando

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}
if (this.entityConfig.fields.length > 0) {
  this.log(chalk.white('Fields'));
  this.entityConfig.fields.forEach(field => {
    const validationDetails = [];
    const fieldValidate = _.isArray(field.fieldValidateRules) && field.fieldValidateRules.length >= 1;
    if (fieldValidate === true) {
      if (field.fieldValidateRules.includes(REQUIRED)) {
        validationDetails.push(REQUIRED);
      }

display.js

GitHub: navgurukul/sansaar

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  const results = await User.fetchGraph(user, { roles: true, pathways: true });
  return this._applyTransform(results, transforms.userProfile);
};

_applyTransformV2 = (results, func) =>
  _.isArray(results) ? _.map(results, func) : func(results);

userProfile = async (user) => {
  const { User } = this.server.models();
  const results = await User.fetchGraph(user, { roles: true, pathwaysV2: true });

+ 3 other calls in file

fieldsAnt.cjs.js

GitHub: mighty-justice/fields-ant

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  step(target);
  return output;
};


function isPartialFieldSetSimple(fieldSet) {
  return lodash.isArray(fieldSet);
}
function isFieldSetSimple(fieldSet) {
  return lodash.isArray(fieldSet);
}

jsHarmony.LoadModels.js

GitHub: apHarmony/jsharmony

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//Add dateformat
if(field.control=='date'){
  if(!('format' in field)) field.format = ['date','YYYY-MM-DD'];
  if((field.control=='date') && (!field.controlparams || !('dateformat' in field.controlparams))){
    if(('format' in field) && _.isArray(field.format) && (field.format.length>=2) && (field.format[0]=='date')){
      if(!field.controlparams) field.controlparams = {};
      field.controlparams.dateformat = _this.getDatepickerFormat(field.format[1], model.id + ' > ' + field.name);
    }
  }

contentful.js

GitHub: nsbarsukov/ml-bug-detector

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  return Type.parse(resource);
}


function stringifyArrayValues(object) {
  return _.reduce(object, function(object, value, key) {
    object[key] = _.isArray(value) ? value.join(',') : value;
    return object;
  }, {});
}

+ 648 other calls in file

connector.js

GitHub: codeforequity-at/botium-connector-dialogflowcx

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  this.sessionPath = this.sessionClient.projectLocationAgentSessionPath(this.caps[Capabilities.DIALOGFLOWCX_PROJECT_ID], this.caps[Capabilities.DIALOGFLOWCX_LOCATION] || 'global', this.caps[Capabilities.DIALOGFLOWCX_AGENT_ID], this.conversationId)
}
debug(`Using Dialogflow SessionPath: ${this.sessionPath}`)

if (!_.isNil(this.caps[Capabilities.DIALOGFLOWCX_WELCOME_TEXT])) {
  const welcomeTexts = _.isArray(this.caps[Capabilities.DIALOGFLOWCX_WELCOME_TEXT]) ? this.caps[Capabilities.DIALOGFLOWCX_WELCOME_TEXT] : [this.caps[Capabilities.DIALOGFLOWCX_WELCOME_TEXT]]
  for (const welcomeText of welcomeTexts) {
    const request = {
      session: this.sessionPath,
      queryInput: {

+ 53 other calls in file

publishArticles.js

GitHub: activisthandbook/activisthandbook-editor

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case "escapedString":
  hasCorrectType = _.isString(value);
  sanitizedValue = ">" + newLine + "  " + sanitize(value);
  break;
case "array":
  hasCorrectType = _.isArray(value);
  sanitizedValue = sanitize(JSON.stringify(value));
  break;
case "number":
  hasCorrectType = _.isInteger(value);

lodash.js

GitHub: mdmarufsarker/lodash

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


const isArguments = _.isArguments(() => {});
console.log(isArguments); // => false


const isArray = _.isArray([1, 2, 3]);
console.log(isArray); // => true


const isArrayBuffer = _.isArrayBuffer(new ArrayBuffer(2));
console.log(isArrayBuffer); // => true

+ 15 other calls in file

index.js

GitHub: shakyShane/opt-merger

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} else {
    toMerge = commandLineArgs;
}

var simpleMerged = _.merge(_.cloneDeep(defaults), toMerge, function (a, b) {
    return _.isArray(a) ? _.union(a, b) : undefined;
});

if (callbacks && Object.keys(callbacks).length) {

common.js

GitHub: beyowi/strapi-plugin-content-moderation

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const refusedUserTemplate = require('../config/email-templates/refused-user');


module.exports = ({ strapi }) => ({
  getConfig(prop, defaultValue) {
    let queryProp = prop;
    if (prop && isArray(prop)) {
      queryProp = prop.join('.');
    }
    const result = strapi.config.get(
      `plugin.content-moderation${queryProp ? '.' + queryProp : ''}`

generator.js

GitHub: wxlam/data-file-generator

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  // incase paramName not wrapped in quotes
  template = template.replace(templateParamName, paramValue);
} else {

  // check if transform required
  if (repeatingGrpTransform && _.isArray(repeatingGrpTransform) && repeatingGrpTransform.length > 0) {
    let useParamName = prefixValue + '_' + suffixValue
    // find matching transform for columnName && paramValue
    let transformMatch = _.find(repeatingGrpTransform, function (matchObj) {
      return matchObj.columnName === useParamName && matchObj.columnValue === paramValue

utils.js

GitHub: waiphyo285/nodejs-starter-kit

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module.exports.isEmptyArray = function (arr) {
    return !_.isArray(arr)
}


module.exports.isArray = function (arr) {
    return _.isArray(arr)
}


module.exports.isEmail = function (email) {
    const regex = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/

openaps.js

GitHub: sweetmiss0923/cgm-remote-monitor

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  } else {
    enacted.moment = moment(enacted.timestamp);
  }
  result.lastEnacted = enacted;
  if (enacted.predBGs && (!result.lastPredBGs || enacted.moment.isAfter(result.lastPredBGs.moment))) {
    result.lastPredBGs = _.isArray(enacted.predBGs) ? { values: enacted.predBGs } : enacted.predBGs;
    result.lastPredBGs.moment = enacted.moment;
  }
}

+ 11 other calls in file

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