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Title: Array.prototype.flat limited depth to 21 · Issue #55685 · microsoft/TypeScript · GitHub

Open Graph Title: Array.prototype.flat limited depth to 21 · Issue #55685 · microsoft/TypeScript

X Title: Array.prototype.flat limited depth to 21 · Issue #55685 · microsoft/TypeScript

Description: ⚙ Compilation target ES2019 ⚙ Library es2019 Missing / Incorrect Definition Array.prototype.flat definition is supporting depth only up to 21. Over 21 return wrong type. Sample Code const foo = [ [ ['string' ] ] ] const flatFoo = foo.fla...

Open Graph Description: ⚙ Compilation target ES2019 ⚙ Library es2019 Missing / Incorrect Definition Array.prototype.flat definition is supporting depth only up to 21. Over 21 return wrong type. Sample Code const foo = [ [...

X Description: ⚙ Compilation target ES2019 ⚙ Library es2019 Missing / Incorrect Definition Array.prototype.flat definition is supporting depth only up to 21. Over 21 return wrong type. Sample Code const foo = [ [...

Opengraph URL: https://github.com/microsoft/TypeScript/issues/55685

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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Array.prototype.flat limited depth to 21","articleBody":"### ⚙ Compilation target\n\nES2019\n\n### ⚙ Library\n\nes2019\n\n### Missing / Incorrect Definition\n\nArray.prototype.flat definition is supporting `depth` only up to 21.  Over 21 return wrong type.\r\n\r\n\n\n### Sample Code\n\n```TypeScript\nconst foo = [ [ ['string' ] ] ]\r\nconst flatFoo = foo.flat(22) // string[][][] should be string[]\n```\n\n\n### Documentation Link\n\nhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat","author":{"url":"https://github.com/PKrasinski","@type":"Person","name":"PKrasinski"},"datePublished":"2023-09-08T16:41:32.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/55685/TypeScript/issues/55685"}

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