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- /**
- * Copyright (c) 2013-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.
- */
-
- 'use strict';
-
- /**
- * Use invariant() to assert state which your program assumes to be true.
- *
- * Provide sprintf-style format (only %s is supported) and arguments
- * to provide information about what broke and what you were
- * expecting.
- *
- * The invariant message will be stripped in production, but the invariant
- * will remain to ensure logic does not differ in production.
- */
-
- var invariant = function(condition, format, a, b, c, d, e, f) {
- if (process.env.NODE_ENV !== 'production') {
- if (format === undefined) {
- throw new Error('invariant requires an error message argument');
- }
- }
-
- if (!condition) {
- var error;
- if (format === undefined) {
- error = new Error(
- 'Minified exception occurred; use the non-minified dev environment ' +
- 'for the full error message and additional helpful warnings.'
- );
- } else {
- var args = [a, b, c, d, e, f];
- var argIndex = 0;
- error = new Error(
- format.replace(/%s/g, function() { return args[argIndex++]; })
- );
- error.name = 'Invariant Violation';
- }
-
- error.framesToPop = 1; // we don't care about invariant's own frame
- throw error;
- }
- };
-
- module.exports = invariant;
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