hpyhacking/peatio · error

invalid 'what' in when()

Error message

invalid 'what' in when()

What it means

Error "invalid 'what' in when()" thrown in hpyhacking/peatio.

Source

Thrown at app/assets/javascripts/lib/angular-ui-router.js:1525

        if (handlerIsString) {
          redirect = handler;
          handler = ['$match', function ($match) { return interpolate(redirect, $match); }];
        }
        return extend(function ($injector, $location) {
          return handleIfMatch($injector, handler, what.exec($location.path()));
        }, {
          prefix: regExpPrefix(what)
        });
      }
    };

    var check = { matcher: $urlMatcherFactory.isMatcher(what), regex: what instanceof RegExp };

    for (var n in check) {
      if (check[n]) return this.rule(strategies[n](what, handler));
    }

    throw new Error("invalid 'what' in when()");
  };

  /**
   * @ngdoc function
   * @name ui.router.router.$urlRouterProvider#deferIntercept
   * @methodOf ui.router.router.$urlRouterProvider
   *
   * @description
   * Disables (or enables) deferring location change interception.
   *
   * If you wish to customize the behavior of syncing the URL (for example, if you wish to
   * defer a transition but maintain the current URL), call this method at configuration time.
   * Then, at run time, call `$urlRouter.listen()` after you have configured your own
   * `$locationChangeSuccess` event handler.
   *
   * @example
   * <pre>
   * var app = angular.module('app', ['ui.router.router']);

View on GitHub (pinned to dab8641137)

Solutions

1. Pass a string, RegExp, or UrlMatcher as the first argument to $urlRouterProvider.when(); any other type is invalid.

When it happens

Trigger: Thrown at app/assets/javascripts/lib/angular-ui-router.js:1525 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hpyhacking/peatio@dab8641137 (2026-08-23). Data as JSON: /api/errors/e4ad414768d32a66. Report an issue: GitHub.