{"action":"closed","issue":{"url":"https://api.github.com/repos/jspm/jspm-cli/issues/1637","repository_url":"https://api.github.com/repos/jspm/jspm-cli","labels_url":"https://api.github.com/repos/jspm/jspm-cli/issues/1637/labels{/name}","comments_url":"https://api.github.com/repos/jspm/jspm-cli/issues/1637/comments","events_url":"https://api.github.com/repos/jspm/jspm-cli/issues/1637/events","html_url":"https://github.com/jspm/jspm-cli/issues/1637","id":142451950,"number":1637,"title":"transpiler: \"plugin-babel\", builds are made using traceur","user":{"login":"ineentho","id":1151283,"avatar_url":"https://avatars.githubusercontent.com/u/1151283?v=3","gravatar_id":"","url":"https://api.github.com/users/ineentho","html_url":"https://github.com/ineentho","followers_url":"https://api.github.com/users/ineentho/followers","following_url":"https://api.github.com/users/ineentho/following{/other_user}","gists_url":"https://api.github.com/users/ineentho/gists{/gist_id}","starred_url":"https://api.github.com/users/ineentho/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ineentho/subscriptions","organizations_url":"https://api.github.com/users/ineentho/orgs","repos_url":"https://api.github.com/users/ineentho/repos","events_url":"https://api.github.com/users/ineentho/events{/privacy}","received_events_url":"https://api.github.com/users/ineentho/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2016-03-21T19:50:28Z","updated_at":"2016-03-26T04:55:36Z","closed_at":"2016-03-26T04:55:36Z","body":"I'm using .17 beta11.\r\n\r\nIn my jspm.config.js I have\r\n\r\n```\r\nSystemJS.config({\r\n    transpiler: \"plugin-babel\"\r\n});\r\n```\r\n\r\nIt loads using babel in the browser, but builds are made using traceur for some reason. I noticed because traceur was unable to transpile some of my code.\r\n\r\n```\r\nCannot read property 'reportError' of null\r\n    at reportDuplicateVar (node_modules\\jspm\\node_modules\\systemjs-builder\\node_modules\\traceur\\bin\\traceur.js:17691:13)\r\n```\r\n\r\nOr am I wrong here, maybe you always use some part of Traceur for builds since you have it as a systemjs-builder dependency?\r\n\r\n```\r\nconst jspm = require('jspm')\r\njspm.setPackagePath('.')\r\nconst builder = new jspm.Builder(BASE_DIR);\r\nbuilder.bundle('file', 'out', {\r\n    minify: true,\r\n    sourceMaps: true\r\n};\r\n```"}}