{"action":"opened","issue":{"url":"https://api.github.com/repos/karma-runner/karma/issues/1372","labels_url":"https://api.github.com/repos/karma-runner/karma/issues/1372/labels{/name}","comments_url":"https://api.github.com/repos/karma-runner/karma/issues/1372/comments","events_url":"https://api.github.com/repos/karma-runner/karma/issues/1372/events","html_url":"https://github.com/karma-runner/karma/issues/1372","id":68027205,"number":1372,"title":"[bug] Caused by dependency project","user":{"login":"AlexKVal","id":847572,"avatar_url":"https://avatars.githubusercontent.com/u/847572?v=3","gravatar_id":"","url":"https://api.github.com/users/AlexKVal","html_url":"https://github.com/AlexKVal","followers_url":"https://api.github.com/users/AlexKVal/followers","following_url":"https://api.github.com/users/AlexKVal/following{/other_user}","gists_url":"https://api.github.com/users/AlexKVal/gists{/gist_id}","starred_url":"https://api.github.com/users/AlexKVal/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AlexKVal/subscriptions","organizations_url":"https://api.github.com/users/AlexKVal/orgs","repos_url":"https://api.github.com/users/AlexKVal/repos","events_url":"https://api.github.com/users/AlexKVal/events{/privacy}","received_events_url":"https://api.github.com/users/AlexKVal/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-04-13T07:19:57Z","updated_at":"2015-04-13T07:19:57Z","closed_at":null,"body":"Recently I have found a problem with tests https://travis-ci.org/AlexKVal/react-bootstrap/jobs/58184576 for [react-bootstrap](https://github.com/react-bootstrap/react-bootstrap) project.\r\n\r\nI have created a pure trash project (with one simple test) to find out where is the problem with tests runned by Karma.\r\n\r\nHere is the travis log https://travis-ci.org/AlexKVal/travis-karma for this project.\r\n\r\nAnd here is the problem:\r\n```console\r\n/home/travis/build/AlexKVal/travis-karma/node_modules/karma/node_modules/memoizee/lib/weak.js:58\r\n\t\t\t\tclear: d(map.clear.bind(map))\r\n\t\t\t\t                  ^\r\nTypeError: Cannot read property 'bind' of undefined\r\n    at /home/travis/build/AlexKVal/travis-karma/node_modules/karma/node_modules/memoizee/lib/weak.js:58:23\r\n```\r\n\r\nIt seems the problem is with the new 0.20.3 version of https://github.com/medikoo/es6-weak-map.\r\nWith previous v0.20.2 version Karma works fine.\r\n\r\nThe method `clear()` doesn't exist anymore in `es6-weak-map/polyfill.js`.\r\nHere is the commit [50be019c91](https://github.com/medikoo/es6-weak-map/commit/50be019c91) that removes it.\r\n\r\nI will write about the problem to @medikoo."}}