node_modules/fbjs/lib/monitorCodeUse.js.flow


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/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @providesModule monitorCodeUse
 */

'use strict';

var invariant = require('./invariant');

/**
 * Provides open-source compatible instrumentation for monitoring certain API
 * uses before we're ready to issue a warning or refactor. It accepts an event
 * name which may only contain the characters [a-z0-9_] and an optional data
 * object with further information.
 */

function monitorCodeUse(eventName, data) {
  invariant(eventName && !/[^a-z0-9_]/.test(eventName), 'You must provide an eventName using only the characters [a-z0-9_]');
}

module.exports = monitorCodeUse;