{"action":"created","comment":{"url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/comments/71616459","id":71616459,"diff_hunk":"@@ -1,107 +1,110 @@\n-/*@internal*/\r\n namespace ts {\r\n+    declare const performance: { now?(): number } | undefined;\r\n+    /** Gets a timestamp with (at least) ms resolution */\r\n+    export const timestamp = typeof performance !== \"undefined\" && performance.now ? performance.now : Date.now ? Date.now : () => +(new Date());\r\n+}\r\n+\r\n+/*@internal*/\r\n+namespace ts.performance {\r\n     /** Performance measurements for the compiler. */\r\n-    export namespace performance {\r\n-        declare const onProfilerEvent: { (markName: string): void; profiler: boolean; };\r\n-        declare const performance: { now?(): number } | undefined;\r\n-        let profilerEvent: (markName: string) => void;\r\n-        let markInternal: () => number;\r\n-        let counters: Map<number>;\r\n-        let measures: Map<number>;\r\n+    declare const onProfilerEvent: { (markName: string): void; profiler: boolean; };\r\n+    let profilerEvent: (markName: string) => void;\r\n+    let markInternal: () => number;\r","path":"src/compiler/performance.ts","position":20,"original_position":20,"commit_id":"989109311e257cd74efeee98b074a28d528c200c","original_commit_id":"989109311e257cd74efeee98b074a28d528c200c","user":{"login":"weswigham","id":2932786,"avatar_url":"https://avatars.githubusercontent.com/u/2932786?v=3","gravatar_id":"","url":"https://api.github.com/users/weswigham","html_url":"https://github.com/weswigham","followers_url":"https://api.github.com/users/weswigham/followers","following_url":"https://api.github.com/users/weswigham/following{/other_user}","gists_url":"https://api.github.com/users/weswigham/gists{/gist_id}","starred_url":"https://api.github.com/users/weswigham/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/weswigham/subscriptions","organizations_url":"https://api.github.com/users/weswigham/orgs","repos_url":"https://api.github.com/users/weswigham/repos","events_url":"https://api.github.com/users/weswigham/events{/privacy}","received_events_url":"https://api.github.com/users/weswigham/received_events","type":"User","site_admin":false},"body":"Alright. Conceivably this avoids the lookup under the `ts.` namespace, but I guess that doesn't really matter?","created_at":"2016-07-20T22:13:34Z","updated_at":"2016-07-20T22:13:34Z","html_url":"https://github.com/Microsoft/TypeScript/pull/9845#discussion_r71616459","pull_request_url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/9845","_links":{"self":{"href":"https://api.github.com/repos/Microsoft/TypeScript/pulls/comments/71616459"},"html":{"href":"https://github.com/Microsoft/TypeScript/pull/9845#discussion_r71616459"},"pull_request":{"href":"https://api.github.com/repos/Microsoft/TypeScript/pulls/9845"}}},"pull_request":{"url":"https://api.github.com/repos/Microsoft/TypeScript/pulls/9845","id":78195107,"html_url":"https://github.com/Microsoft/TypeScript/pull/9845","diff_url":"https://github.com/Microsoft/TypeScript/pull/9845.diff","patch_url":"https://github.com/Microsoft/TypeScript/pull/9845.patch","issue_url":"https://api.github.com/repos/Microsoft/TypeScript/issues/9845","number":9845,"state":"open","locked":false,"title":"Integrate feedback from @mihailik to performance framework","user":{"login":"weswigham","id":2932786,"avatar_url":"https://avatars.githubusercontent.com/u/2932786?v=3","gravatar_id":"","url":"https://api.github.com/users/weswigham","html_url":"https://github.com/weswigham","followers_url":"https://api.github.com/users/weswigham/followers","following_url":"https://api.github.com/users/weswigham/following{/other_user}","gists_url":"https://api.github.com/users/weswigham/gists{/gist_id}","starred_url":"https://api.github.com/users/weswigham/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/weswigham/subscriptions","organizations_url":"https://api.github.com/users/weswigham/orgs","repos_url":"https://api.github.com/users/weswigham/repos","events_url":"https://api.github.com/users/weswigham/events{/privacy}","received_events_url":"https://api.github.com/users/weswigham/received_events","type":"User","site_admin":false},"body":"Integrates @mihailik's comments from #9536. Also flattens the namespaces in `performance.ts` (removing mostly meaningless whitespace), and unifies all timestamping found in the compiler to use a single `timestamp` function.\r\n\r\nThe definition of `timestamp` is still in `performance`, since `performance` still needs to use it, and it defined before `core`.\r\n\r\n@rbuckton Do you wanna okay this 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