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Top 10 Examples of "common-errors in functional component" in JavaScript

Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'common-errors' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.

var errors = new ValidationError()
	  , schema = this

	definition = definition || schema.getActiveDefinition(data)
	options = options || {}

	if(!util.isExistent(data)) {
		if(!definition.required) return true
		if(util.isNull(data)) {
			throw new ValidationError('Required but got \'NULL\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isNaN(data)) {
			throw new ValidationError('Required but got \'NaN\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isUndefined(data)) {
			throw new ValidationError('Required but got \'undefined\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isEmptyStr(data)) {
			throw new ValidationError('Required but got \'empty string\'', Schema.ErrorCodes.REQUIRED)
		}
		throw new ValidationError('Required failed test for existence', Schema.ErrorCodes.REQUIRED)
	}

	if(!util.typeMatch(data, definition.type)) {
		// build up the error text and throw at end
		// 'expected' 
		throw new ValidationError('expected '+definition.type.name)
	}

	if(util.isObject(data)) {
		Object.keys(data).forEach(function(key) {
			try {
if(util.isNaN(data)) {
			throw new ValidationError('Required but got \'NaN\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isUndefined(data)) {
			throw new ValidationError('Required but got \'undefined\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isEmptyStr(data)) {
			throw new ValidationError('Required but got \'empty string\'', Schema.ErrorCodes.REQUIRED)
		}
		throw new ValidationError('Required failed test for existence', Schema.ErrorCodes.REQUIRED)
	}

	if(!util.typeMatch(data, definition.type)) {
		// build up the error text and throw at end
		// 'expected' 
		throw new ValidationError('expected '+definition.type.name)
	}

	if(util.isObject(data)) {
		Object.keys(data).forEach(function(key) {
			try {
				schema.validate(data[key], options, definition.properties[key])
			} catch(e) {
				util.addNestedError(errors, e, key)
			}
		})
		definition.required && definition.required.forEach(function(key) {
			if(!util.isExistent(data[key]))
				errors.addError(new ValidationError('required'))
		})
	}
if(!util.isExistent(data)) {
		if(!definition.required) return true
		if(util.isNull(data)) {
			throw new ValidationError('Required but got \'NULL\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isNaN(data)) {
			throw new ValidationError('Required but got \'NaN\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isUndefined(data)) {
			throw new ValidationError('Required but got \'undefined\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isEmptyStr(data)) {
			throw new ValidationError('Required but got \'empty string\'', Schema.ErrorCodes.REQUIRED)
		}
		throw new ValidationError('Required failed test for existence', Schema.ErrorCodes.REQUIRED)
	}

	if(!util.typeMatch(data, definition.type)) {
		// build up the error text and throw at end
		// 'expected' 
		throw new ValidationError('expected '+definition.type.name)
	}

	if(util.isObject(data)) {
		Object.keys(data).forEach(function(key) {
			try {
				schema.validate(data[key], options, definition.properties[key])
			} catch(e) {
				util.addNestedError(errors, e, key)
			}
		})
Schema.prototype.validate = function(data, options, definition) {
	var errors = new ValidationError()
	  , schema = this

	definition = definition || schema.getActiveDefinition(data)
	options = options || {}

	if(!util.isExistent(data)) {
		if(!definition.required) return true
		if(util.isNull(data)) {
			throw new ValidationError('Required but got \'NULL\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isNaN(data)) {
			throw new ValidationError('Required but got \'NaN\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isUndefined(data)) {
			throw new ValidationError('Required but got \'undefined\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isEmptyStr(data)) {
			throw new ValidationError('Required but got \'empty string\'', Schema.ErrorCodes.REQUIRED)
		}
		throw new ValidationError('Required failed test for existence', Schema.ErrorCodes.REQUIRED)
	}

	if(!util.typeMatch(data, definition.type)) {
		// build up the error text and throw at end
		// 'expected' 
definition = definition || schema.getActiveDefinition(data)
	options = options || {}

	if(!util.isExistent(data)) {
		if(!definition.required) return true
		if(util.isNull(data)) {
			throw new ValidationError('Required but got \'NULL\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isNaN(data)) {
			throw new ValidationError('Required but got \'NaN\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isUndefined(data)) {
			throw new ValidationError('Required but got \'undefined\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isEmptyStr(data)) {
			throw new ValidationError('Required but got \'empty string\'', Schema.ErrorCodes.REQUIRED)
		}
		throw new ValidationError('Required failed test for existence', Schema.ErrorCodes.REQUIRED)
	}

	if(!util.typeMatch(data, definition.type)) {
		// build up the error text and throw at end
		// 'expected' 
		throw new ValidationError('expected '+definition.type.name)
	}

	if(util.isObject(data)) {
		Object.keys(data).forEach(function(key) {
			try {
				schema.validate(data[key], options, definition.properties[key])
			} catch(e) {
				util.addNestedError(errors, e, key)
Schema.prototype.validate = function(data, options, definition) {
	var errors = new ValidationError()
	  , schema = this

	definition = definition || schema.getActiveDefinition(data)
	options = options || {}

	if(!util.isExistent(data)) {
		if(!definition.required) return true
		if(util.isNull(data)) {
			throw new ValidationError('Required but got \'NULL\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isNaN(data)) {
			throw new ValidationError('Required but got \'NaN\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isUndefined(data)) {
			throw new ValidationError('Required but got \'undefined\'', Schema.ErrorCodes.REQUIRED)
		}
		if(util.isEmptyStr(data)) {
			throw new ValidationError('Required but got \'empty string\'', Schema.ErrorCodes.REQUIRED)
		}
		throw new ValidationError('Required failed test for existence', Schema.ErrorCodes.REQUIRED)
	}

	if(!util.typeMatch(data, definition.type)) {
		// build up the error text and throw at end
		// 'expected' 
		throw new ValidationError('expected '+definition.type.name)
	}
return new Promise(function (resolve, reject) {
    if (!value) {
      reject(new errors.TypeError('requires value[source], value[dest]'));
      return;
    }
    // FIXME
    if ([value['source'], value['dest']].some(function (key) {
      return key === null || key === '' || key === '.' || key === '/';
    })) {
      reject(new errors.ArgumentError('input is not allowed'));
      return;
    }

    mv(value['source'], value['dest'], { mkdirp: true }, function (err) {
      if (err) {
        reject(err);
        return;
      }
      resolve();
    });
  });
};
return new Promise(function (resolve, reject) {
    if (!value) {
      reject(new errors.TypeError('requires value[source], value[dest]'));
      return;
    }
    // FIXME
    if ([value['source'], value['dest']].some(function (key) {
      return key === null || key === '' || key === '.' || key === '/';
    })) {
      reject(new errors.ArgumentError('input is not allowed'));
      return;
    }

    mv(value['source'], value['dest'], { mkdirp: true }, function (err) {
      if (err) {
        reject(err);
        return;
      }
      resolve();
var app = module.exports = express();


        /**
         * Configuration
         */

            // all environments
        app.set('port', nconf.get('webserver:port'));
        app.set('views', __dirname + '/views');
        app.set('view engine', 'jade');

//        app.use(morgan('dev'));
        app.use(bodyParser.json());
        app.use(bodyParser.urlencoded({extended:false}));
        app.use(errors.middleware.crashProtector());
        app.use(methodOverride());
        app.use(express.static(path.join(__dirname, 'public')));
        app.use(log4js.connectLogger(httpLogger, { level: 'auto', format: ':remote-addr - :method :url HTTP/:http-version :status - :response-time ms',nolog: '\\.gif|\\.jpg$' }));
        
        /**
         * Routes
         */

        app.get('/', routes.index);
        app.get('/partials/:name', routes.partials);

        // JSON API

        app.get('/api/packet/', api.getNumPackets);

        app.get('/api/packet/get/:id', api.packet);
module.exports = (server) => {

    SCli.debug('lackey-cms/server/init/errors', 'Setting up');

    // If we got to this point there was no handler for this request
    server.use(module.exports.notFound);

    // Just in Case... Catch all!
    server.use(errors.middleware.crashProtector());
};
/* istanbul ignore next : external */

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