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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Isolated declarations uses type information when emitting computed object keys ","articleBody":"### 🔎 Search Terms\n\n- isolated declarations\r\n- computed keys\r\n- object literals\n\n### 🕗 Version \u0026 Regression Information\n\n5.5.0-dev.20240514\n\n### ⏯ Playground Link\n\nhttps://www.typescriptlang.org/play/?isolatedDeclarations=true\u0026ts=5.5.0-dev.20240514#code/KYDwDg9gTgLgBAYwgOwM7wNLAJ5wLxwBEMAFsFtoQNwBQNAJsAgDYCGUwcA5sxAEatmcAN4044uKEixEKdHADivAcwr4ipYEv6CKhMRKnR4SNPACqyAJYBHAK7AAytgC2fCMwBccO9fudUV3dmWglJcGNZMzgAORRLWwdnNw9vQJSQmgBfOiMZU3kAQXVRMIBtCgBdbxgoBwAaA3Ey5OCAOhgIR1qrZC4AFVYuargAM0FUYEbyhP9WjxHx5knpiTLtFSrvJZXsmiA\n\n### 💻 Code\n\n```ts\r\nexport const Key = \"theKey\";\r\n\r\ndeclare global {\r\n    export const GlobalKey = \"theGlobalKey\"\r\n    export const UniqueSymbol: unique symbol;\r\n    export const NonUniqueSymbol: symbol;\r\n}\r\n\r\nexport const A = {\r\n    [Key]: true,\r\n    [Symbol.toStringTag]: false,\r\n    [UniqueSymbol]: false,\r\n    [GlobalKey]: false,\r\n}\r\n```\r\n\n\n### 🙁 Actual behavior\n\nTypeScript is emitting the computed property keys with type information that can not be determined without a type checker.\r\n\r\n```ts\r\nexport declare const Key = \"theKey\";\r\ndeclare global {\r\n    export const GlobalKey = \"theGlobalKey\";\r\n    export const UniqueSymbol: unique symbol;\r\n    export const NonUniqueSymbol: symbol;\r\n}\r\nexport declare const A: {\r\n    theKey: boolean;\r\n    [Symbol.toStringTag]: boolean;\r\n    [UniqueSymbol]: boolean;\r\n    theGlobalKey: boolean;\r\n};\r\n```\n\n### 🙂 Expected behavior\n\n```ts\r\nexport declare const Key = \"theKey\";\r\ndeclare global {\r\n    export const GlobalKey = \"theGlobalKey\";\r\n    export const UniqueSymbol: unique symbol;\r\n    export const NonUniqueSymbol: symbol;\r\n}\r\nexport declare const A: {\r\n    [Key]: true,\r\n    [Symbol.toStringTag]: false,\r\n    [UniqueSymbol]: false,\r\n    [GlobalKey]: false,\r\n};\r\n```\n\n### Additional information about the issue\n\n_No response_","author":{"url":"https://github.com/lucacasonato","@type":"Person","name":"lucacasonato"},"datePublished":"2024-05-14T15:16:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/58533/TypeScript/issues/58533"}