{"action":"created","comment":{"url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/comments/26061653","id":26061653,"diff_hunk":"@@ -10891,9 +10891,9 @@ module ts {\n             getSymbolDisplayBuilder().buildTypeDisplay(getReturnTypeOfSignature(signature), writer, enclosingDeclaration, flags);\r\n         }\r\n \r\n-        function isUnknownIdentifier(location: Node, name: string): boolean {\r\n+        function isUnknownIdentifier(location: Node, name: string, sourceFile: SourceFile): boolean {\r","path":"src/compiler/checker.ts","position":5,"original_position":5,"commit_id":"835c84f834c863e66512f3d266c60482ac94fa85","original_commit_id":"835c84f834c863e66512f3d266c60482ac94fa85","user":{"login":"JsonFreeman","id":8052525,"avatar_url":"https://avatars.githubusercontent.com/u/8052525?v=3","gravatar_id":"","url":"https://api.github.com/users/JsonFreeman","html_url":"https://github.com/JsonFreeman","followers_url":"https://api.github.com/users/JsonFreeman/followers","following_url":"https://api.github.com/users/JsonFreeman/following{/other_user}","gists_url":"https://api.github.com/users/JsonFreeman/gists{/gist_id}","starred_url":"https://api.github.com/users/JsonFreeman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JsonFreeman/subscriptions","organizations_url":"https://api.github.com/users/JsonFreeman/orgs","repos_url":"https://api.github.com/users/JsonFreeman/repos","events_url":"https://api.github.com/users/JsonFreeman/events{/privacy}","received_events_url":"https://api.github.com/users/JsonFreeman/received_events","type":"User","site_admin":false},"body":"sourceFile is not just an optimization. It is necessary. The reason is that location may be a synthesized node, in which case it will not have a proper parent chain with which to obtain the source file.\r\n\r\nI will change the argument order.","created_at":"2015-03-09T18:29:34Z","updated_at":"2015-03-09T18:29:34Z","html_url":"https://github.com/Microsoft/TypeScript/pull/2207#discussion_r26061653","pull_request_url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/2207","_links":{"self":{"href":"https://api.github.com/repos/Microsoft/TypeScript/pulls/comments/26061653"},"html":{"href":"https://github.com/Microsoft/TypeScript/pull/2207#discussion_r26061653"},"pull_request":{"href":"https://api.github.com/repos/Microsoft/TypeScript/pulls/2207"}}},"pull_request":{"url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/2207","id":30527939,"html_url":"https://github.com/Microsoft/TypeScript/pull/2207","diff_url":"https://github.com/Microsoft/TypeScript/pull/2207.diff","patch_url":"https://github.com/Microsoft/TypeScript/pull/2207.patch","issue_url":"https://api.github.com/repos/Microsoft/TypeScript/issues/2207","number":2207,"state":"open","locked":false,"title":"Emit 'for...of' statements in ES3/ES5","user":{"login":"JsonFreeman","id":8052525,"avatar_url":"https://avatars.githubusercontent.com/u/8052525?v=3","gravatar_id":"","url":"https://api.github.com/users/JsonFreeman","html_url":"https://github.com/JsonFreeman","followers_url":"https://api.github.com/users/JsonFreeman/followers","following_url":"https://api.github.com/users/JsonFreeman/following{/other_user}","gists_url":"https://api.github.com/users/JsonFreeman/gists{/gist_id}","starred_url":"https://api.github.com/users/JsonFreeman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JsonFreeman/subscriptions","organizations_url":"https://api.github.com/users/JsonFreeman/orgs","repos_url":"https://api.github.com/users/JsonFreeman/repos","events_url":"https://api.github.com/users/JsonFreeman/events{/privacy}","received_events_url":"https://api.github.com/users/JsonFreeman/received_events","type":"User","site_admin":false},"body":"This is the downlevel emit for 'for...of' loops in ES3/ES5.\r\n\r\nThe following ES6 code:\r\n```ts\r\nfor (var v of expr) { }\r\n```\r\n\r\nwill be emitted as:\r\n```js\r\nfor (var _i = 0, _a = expr; _i < _a.length; _i++) {\r\n    var v = _a[_i];\r\n}\r\n```\r\nIt works in all forms, including with destructuring.\r\n\r\nStill pending is the type check work for this downlevel emit. Also, using a for...of loop below ES6 still errors, but it now emits correctly. I will send out the error removal in another change.","created_at":"2015-03-05T03:40:23Z","updated_at":"2015-03-09T18:29:34Z","closed_at":null,"merged_at":null,"merge_commit_sha":"1a8fd0bf9663c417af24d68ec942c456bc517e9d","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/2207/commits","review_comments_url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/2207/comments","review_comment_url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/comments{/number}","comments_url":"https://api.github.com/repos/Microsoft/TypeScript/issues/2207/comments","statuses_url":"https://api.github.com/repos/Microsoft/TypeScript/statuses/835c84f834c863e66512f3d266c60482ac94fa85","head":{"label":"Microsoft:for-ofES5","ref":"for-ofES5","sha":"835c84f834c863e66512f3d266c60482ac94fa85","user":{"login":"Microsoft","id":6154722,"avatar_url":"https://avatars.githubusercontent.com/u/6154722?v=3","gravatar_id":"","url":"https://api.github.com/users/Microsoft","html_url":"https://github.com/Microsoft","followers_url":"https://api.github.com/users/Microsoft/followers","following_url":"https://api.github.com/users/Microsoft/following{/other_user}","gists_url":"https://api.github.com/users/Microsoft/gists{/gist_id}","starred_url":"https://api.github.com/users/Microsoft/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Microsoft/subscriptions","organizations_url":"https://api.github.com/users/Microsoft/orgs","repos_url":"https://api.github.com/users/Microsoft/repos","events_url":"https://api.github.com/users/Microsoft/events{/privacy}","received_events_url":"https://api.github.com/users/Microsoft/received_events","type":"Organization","site_admin":false},"repo":{"id":20929025,"name":"TypeScript","full_name":"Microsoft/TypeScript","owner":{"login":"Microsoft","id":6154722,"avatar_url":"https://avatars.githubusercontent.com/u/6154722?v=3","gravatar_id":"","url":"https://api.github.com/users/Microsoft","html_url":"https://github.com/Microsoft","followers_url":"https://api.github.com/users/Microsoft/followers","following_url":"https://api.github.com/users/Microsoft/following{/other_user}","gists_url":"https://api.github.com/users/Microsoft/gists{/gist_id}","starred_url":"https://api.github.com/users/Microsoft/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Microsoft/subscriptions","organizations_url":"https://api.github.com/users/Microsoft/orgs","repos_url":"https://api.github.com/users/Microsoft/repos","events_url":"https://api.github.com/users/Microsoft/events{/privacy}","received_events_url":"https://api.github.com/users/Microsoft/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/Microsoft/TypeScript","description":"TypeScript 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