4 files changed, 124 insertions, 0 deletions
diff --git a/node_modules/algoliasearch/src/browser/migration-layer/is-using-latest.js b/node_modules/algoliasearch/src/browser/migration-layer/is-using-latest.js
new file mode 100644
index 00000000..f8e29d4e
--- /dev/null
+++ b/node_modules/algoliasearch/src/browser/migration-layer/is-using-latest.js
@@ -0,0 +1,23 @@
+'use strict';
+
+// this module helps finding if the current page is using
+// the cdn.jsdelivr.net/algoliasearch/latest/$BUILDNAME.min.js version
+
+module.exports = isUsingLatest;
+
+function isUsingLatest(buildName) {
+  var toFind = new RegExp('cdn\\.jsdelivr\\.net/algoliasearch/latest/' +
+    buildName.replace('.', '\\.') + // algoliasearch, algoliasearch.angular
+    '(?:\\.min)?\\.js$'); // [.min].js
+
+  var scripts = document.getElementsByTagName('script');
+  var found = false;
+  for (var currentScript = 0, nbScripts = scripts.length; currentScript < nbScripts; currentScript++) {
+    if (scripts[currentScript].src && toFind.test(scripts[currentScript].src)) {
+      found = true;
+      break;
+    }
+  }
+
+  return found;
+}
diff --git a/node_modules/algoliasearch/src/browser/migration-layer/load-v2.js b/node_modules/algoliasearch/src/browser/migration-layer/load-v2.js
new file mode 100644
index 00000000..b3470baa
--- /dev/null
+++ b/node_modules/algoliasearch/src/browser/migration-layer/load-v2.js
@@ -0,0 +1,50 @@
+'use strict';
+
+module.exports = loadV2;
+
+function loadV2(buildName) {
+  var loadScript = require('load-script');
+  var v2ScriptUrl = '//cdn.jsdelivr.net/algoliasearch/2/' + buildName + '.min.js';
+
+  var message = '-- AlgoliaSearch `latest` warning --\n' +
+    'Warning, you are using the `latest` version string from jsDelivr to load the AlgoliaSearch library.\n' +
+    'Using `latest` is no more recommended, you should load //cdn.jsdelivr.net/algoliasearch/2/algoliasearch.min.js\n\n' +
+    'Also, we updated the AlgoliaSearch JavaScript client to V3. If you want to upgrade,\n' +
+    'please read our migration guide at https://github.com/algolia/algoliasearch-client-js/wiki/Migration-guide-from-2.x.x-to-3.x.x\n' +
+    '-- /AlgoliaSearch  `latest` warning --';
+
+  if (window.console) {
+    if (window.console.warn) {
+      window.console.warn(message);
+    } else if (window.console.log) {
+      window.console.log(message);
+    }
+  }
+
+  // If current script loaded asynchronously,
+  // it will load the script with DOMElement
+  // otherwise, it will load the script with document.write
+  try {
+    // why \x3c? http://stackoverflow.com/a/236106/147079
+    document.write('\x3Cscript>window.ALGOLIA_SUPPORTS_DOCWRITE = true\x3C/script>');
+
+    if (window.ALGOLIA_SUPPORTS_DOCWRITE === true) {
+      document.write('\x3Cscript src="' + v2ScriptUrl + '">\x3C/script>');
+      scriptLoaded('document.write')();
+    } else {
+      loadScript(v2ScriptUrl, scriptLoaded('DOMElement'));
+    }
+  } catch (e) {
+    loadScript(v2ScriptUrl, scriptLoaded('DOMElement'));
+  }
+}
+
+function scriptLoaded(method) {
+  return function log() {
+    var message = 'AlgoliaSearch: loaded V2 script using ' + method;
+
+    if (window.console && window.console.log) {
+      window.console.log(message);
+    }
+  };
+}
diff --git a/node_modules/algoliasearch/src/browser/migration-layer/old-globals.js b/node_modules/algoliasearch/src/browser/migration-layer/old-globals.js
new file mode 100644
index 00000000..1f40c0d2
--- /dev/null
+++ b/node_modules/algoliasearch/src/browser/migration-layer/old-globals.js
@@ -0,0 +1,26 @@
+'use strict';
+
+/* eslint no-unused-vars: [2, {"vars": "local"}] */
+
+module.exports = oldGlobals;
+
+// put old window.AlgoliaSearch.. into window. again so that
+// users upgrading to V3 without changing their code, will be warned
+function oldGlobals() {
+  var message = '-- AlgoliaSearch V2 => V3 error --\n' +
+    'You are trying to use a new version of the AlgoliaSearch JavaScript client with an old notation.\n' +
+    'Please read our migration guide at https://github.com/algolia/algoliasearch-client-js/wiki/Migration-guide-from-2.x.x-to-3.x.x\n' +
+    '-- /AlgoliaSearch V2 => V3 error --';
+
+  window.AlgoliaSearch = function() {
+    throw new Error(message);
+  };
+
+  window.AlgoliaSearchHelper = function() {
+    throw new Error(message);
+  };
+
+  window.AlgoliaExplainResults = function() {
+    throw new Error(message);
+  };
+}
diff --git a/node_modules/algoliasearch/src/browser/migration-layer/script.js b/node_modules/algoliasearch/src/browser/migration-layer/script.js
new file mode 100644
index 00000000..9d12315f
--- /dev/null
+++ b/node_modules/algoliasearch/src/browser/migration-layer/script.js
@@ -0,0 +1,25 @@
+'use strict';
+
+// This script will be browserified and prepended to the normal build
+// directly in window, not wrapped in any module definition
+// To avoid cases where we are loaded with /latest/ along with
+migrationLayer(process.env.ALGOLIA_BUILDNAME);
+
+// Now onto the V2 related code:
+//  If the client is using /latest/$BUILDNAME.min.js, load V2 of the library
+//
+//  Otherwise, setup a migration layer that will throw on old constructors like
+//  new AlgoliaSearch().
+//  So that users upgrading from v2 to v3 will have a clear information
+//  message on what to do if they did not read the migration guide
+function migrationLayer(buildName) {
+  var isUsingLatest = require('./is-using-latest');
+  var loadV2 = require('./load-v2');
+  var oldGlobals = require('./old-globals');
+
+  if (isUsingLatest(buildName)) {
+    loadV2(buildName);
+  } else {
+    oldGlobals();
+  }
+}