CODEWITHSUNDEEP
openlayers-3google-closure-compiler
vjjj
vjjj

Reputation: 1059

open layers 3 - Namespace "ol" already declared error on startup

I am using instructions from here on how to get started with open layers and I got the error: Namespace "ol" already declared - source ol-debug.js and the error
this.Va is not a function - source ol.js

I am pretty sure I have included the ol.js, ol-debug.js and ol.css files properly in my index.html.

Link to open layers js and css files.

This is the relevant part from ol-debug.js file -

/**
 * Defines a namespace in Closure.
 *
 * A namespace may only be defined once in a codebase. It may be defined using
 * goog.provide() or goog.module().
 *
 * The presence of one or more goog.provide() calls in a file indicates
 * that the file defines the given objects/namespaces.
 * Provided symbols must not be null or undefined.
 *
 * In addition, goog.provide() creates the object stubs for a namespace
 * (for example, goog.provide("goog.foo.bar") will create the object
 * goog.foo.bar if it does not already exist).
 *
 * Build tools also scan for provide/require/module statements
 * to discern dependencies, build dependency files (see deps.js), etc.
 *
 * @see goog.require
 * @see goog.module
 * @param {string} name Namespace provided by this file in the form
 *     "goog.package.part".
 */
goog.provide = function(name) {
  if (goog.isInModuleLoader_()) {
    throw Error('goog.provide can not be used within a goog.module.');
  }
  if (!COMPILED) {
    // Ensure that the same namespace isn't provided twice.
    // A goog.module/goog.provide maps a goog.require to a specific file
    if (goog.isProvided_(name)) {
      throw Error('Namespace "' + name + '" already declared.');
    }
  }

  goog.constructNamespace_(name);
};

Upvotes: 2

Views: 1046

Answers (1)

the_skua
the_skua

Reputation: 1291

You need to declare either ol.js or ol-debug.js, not both of them. The error is coming from the fact that you're declaring both of them and it is creating a namespace conflict.

Upvotes: 2

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