--- title: What was the process of open-sourcing TypeScript,... description: A firsthand account of Microsoft's journey open-sourcing major developer products including TypeScript, Chakra (the IE JavaScript engine), .NET, VS Code, and... canonical: https://daily.dev/posts/what-was-the-process-of-open-sourcing-typescript-chakra-net-vs-code-and-the-copilot-extension--jkfefwfjo twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: What was the process of open-sourcing TypeScript, Chakra, .NET, VS Code, and the Copilot extension? | daily.dev og:description: A firsthand account of Microsoft's journey open-sourcing major developer products including TypeScript, Chakra (the IE JavaScript engine), .NET, VS Code, and... og:url: https://daily.dev/posts/what-was-the-process-of-open-sourcing-typescript-chakra-net-vs-code-and-the-copilot-extension--jkfefwfjo og:image: https://api.daily.dev/og/posts/jkFefwFJO.png og:image:alt: What was the process of open-sourcing TypeScript, Chakra, .NET, VS Code, and the Copilot extension? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # What was the process of open-sourcing TypeScript, Chakra, .NET, VS Code, and the Copilot extension? **[Microsoft Developer](https://daily.dev/sources/microsoftdeveloper)** · 1 min read · 0 upvotes · 0 comments ## Summary A firsthand account of Microsoft's journey open-sourcing major developer products including TypeScript, Chakra (the IE JavaScript engine), .NET, VS Code, and the Copilot extension. The speaker describes how the process evolved dramatically — from months of internal lobbying to get TypeScript approved, to a much faster approval for Chakra — reflecting a significant cultural shift at Microsoft toward embracing open source as essential for developer products to gain community support and become better software. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#open-source](https://daily.dev/tags/open-source), [#microsoft](https://daily.dev/tags/microsoft), [#typescript](https://daily.dev/tags/typescript), [#.net](https://daily.dev/tags/.net), [#vscode](https://daily.dev/tags/vscode) [View this post on daily.dev](https://daily.dev/posts/what-was-the-process-of-open-sourcing-typescript-chakra-net-vs-code-and-the-copilot-extension--jkfefwfjo) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"What was the process of open-sourcing TypeScript, Chakra, .NET, VS Code, and the Copilot extension?","url":"https://daily.dev/posts/what-was-the-process-of-open-sourcing-typescript-chakra-net-vs-code-and-the-copilot-extension--jkfefwfjo","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/what-was-the-process-of-open-sourcing-typescript-chakra-net-vs-code-and-the-copilot-extension--jkfefwfjo"},"datePublished":"2026-06-09T17:33:03.802Z","dateModified":"2026-06-09T17:33:20.094Z","description":"A firsthand account of Microsoft's journey open-sourcing major developer products including TypeScript, Chakra (the IE JavaScript engine), .NET, VS Code, and...","image":"https://i.ytimg.com/vi/tX95u6m9E18/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/tX95u6m9E18/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Microsoft Developer","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Microsoft Developer","logo":"https://media.daily.dev/image/upload/s--xZzU3zUq--/f_auto/v1746714872/logos/microsoftdeveloper","url":"https://daily.dev/sources/microsoftdeveloper"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/what-was-the-process-of-open-sourcing-typescript-chakra-net-vs-code-and-the-copilot-extension--jkfefwfjo","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"open-source,microsoft,typescript,.net,vscode","timeRequired":"PT1M","video":{"@type":"VideoObject","name":"What was the process of open-sourcing TypeScript, Chakra, .NET, VS Code, and the Copilot extension?","description":"A firsthand account of Microsoft's journey open-sourcing major developer products including TypeScript, Chakra (the IE JavaScript engine), .NET, VS Code, and...","thumbnailUrl":"https://i.ytimg.com/vi/tX95u6m9E18/sddefault.jpg","uploadDate":"2026-06-09T17:33:03.802Z","duration":"PT1M","url":"https://api.daily.dev/r/jkFefwFJO","embedUrl":"https://www.youtube.com/embed/tX95u6m9E18"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Microsoft Developer","item":"https://daily.dev/sources/microsoftdeveloper"},{"@type":"ListItem","position":3,"name":"What was the process of open-sourcing TypeScript, Chakra, .NET, VS Code, and the Copilot extension?"}]} ```