{"action":"opened","issue":{"url":"https://api.github.com/repos/ef4/fast-sourcemap-concat/issues/4","labels_url":"https://api.github.com/repos/ef4/fast-sourcemap-concat/issues/4/labels{/name}","comments_url":"https://api.github.com/repos/ef4/fast-sourcemap-concat/issues/4/comments","events_url":"https://api.github.com/repos/ef4/fast-sourcemap-concat/issues/4/events","html_url":"https://github.com/ef4/fast-sourcemap-concat/issues/4","id":57678721,"number":4,"title":"Invalid sourcemap when upstream map is short and caching is enabled","user":{"login":"ef4","id":319282,"avatar_url":"https://avatars.githubusercontent.com/u/319282?v=3","gravatar_id":"","url":"https://api.github.com/users/ef4","html_url":"https://github.com/ef4","followers_url":"https://api.github.com/users/ef4/followers","following_url":"https://api.github.com/users/ef4/following{/other_user}","gists_url":"https://api.github.com/users/ef4/gists{/gist_id}","starred_url":"https://api.github.com/users/ef4/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ef4/subscriptions","organizations_url":"https://api.github.com/users/ef4/orgs","repos_url":"https://api.github.com/users/ef4/repos","events_url":"https://api.github.com/users/ef4/events{/privacy}","received_events_url":"https://api.github.com/users/ef4/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-02-14T03:07:25Z","updated_at":"2015-02-14T03:07:25Z","closed_at":null,"body":"I found the root cause of https://github.com/ember-cli/ember-cli/issues/3098.\r\n\r\nfast-sourcemap-concat correct for upstream sourcemaps that are too short or too long. But our caching logic was thrown off by the correction, causing subsequent builds to be offset incorrectly."}}