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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"In 5.7 beta, BigInt64ArrayConstructor mismatches with other typed arrays","articleBody":"### 🔎 Search Terms\n\n\"BigInt64Array\", \"typed array\"\n\n### 🕗 Version \u0026 Regression Information\n\n- This changed between versions 5.6.3 and 5.7.0-beta\n\n\n### ⏯ Playground Link\n\nhttps://www.typescriptlang.org/play/?target=11\u0026ts=5.7.0-beta#code/PTAEGEFcCdoUwHYBdQDoAmqkGdQDc5psBLAewQCgKkBPABzlABV650BBWAQxvHOyTRIAYySlooALwVQs0CGbQaoYaQC2axEmIIA5qHKMuCdKCQALRGcsGLhAwDNrcbHFTMbAIzgAbUgHdQQmhxUF1SF1Aufx5UGTkAH1AAMT8uJAA2ABZOaB4+BAEhUXF42SSAIWJdAElkbNz8-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-Y5kwCGGkEnQ+iYuAyUWJaMJIerEYhbq6tJK6Gocng0D6ADyKyuEgY5OthhCHOho5YVOvxzvh2aEbpmmGuuwLer6-qBvxBFLu5ImrnJCnoEpekqZMUgaSFhp0XALHRrIADaOjoF0DnTgAuhsjG6N6ALAhQPnQH6AbChyXKCfSVqRhIKV3nAcYJkmKakGmGbVa5S7KYQiVIXICgACJwDCbymDoQTYAATAADAAjAA7Fg5pUXSL5dro5igDowg+JAmWmJY8CgA4oSqAgBAIMQiABnEEkUXxPWLkJ-VieRgSDogGHmNlTlVWkvXvVFpHiXIkEbTwNFzIlOYTo5a4vcDb00MJ2yIRDsiScFmOyV04WRR50VqXF+N7KW2kmswH0GUZcCmQ45mWYj062b99lWUjKOciD6N46JQ04xR0M0LDdLw2zpFCh9vM1fBYOfd5yC+ZV7Ko7VUkfWFiAReTomJbFH2DfcLLpSYWXc7lAPQMVFBAA\n\n### 💻 Code\n\n```ts\ntype TypedArrayConstructor =\n    | Float64ArrayConstructor\n    | BigInt64ArrayConstructor\n\nexport function makeTypedArray(buffer: ArrayBuffer, ctr: TypedArrayConstructor) {\n  return new ctr(buffer);  // Incorrect error here.\n}\n```\n\n\n### 🙁 Actual behavior\n\n`new ctr(buffer)` produces error:\n\n```\nNo overload matches this call.\n  Overload 1 of 4, '(length: number): Float64Array\u003cArrayBuffer\u003e | BigInt64Array\u003cArrayBuffer\u003e', gave the following error.\n    Argument of type 'ArrayBuffer' is not assignable to parameter of type 'number'.\n  Overload 2 of 4, '(length?: number | undefined): Float64Array\u003cArrayBuffer\u003e | BigInt64Array\u003cArrayBuffer\u003e', gave the following error.\n    Argument of type 'ArrayBuffer' is not assignable to parameter of type 'number'.\n  Overload 3 of 4, '(array: ArrayLike\u003cbigint\u003e | Iterable\u003cbigint\u003e): Float64Array\u003cArrayBuffer\u003e | BigInt64Array\u003cArrayBuffer\u003e', gave the following error.\n    Argument of type 'ArrayBuffer' is not assignable to parameter of type 'ArrayLike\u003cbigint\u003e | Iterable\u003cbigint\u003e'.\n```\n\n### 🙂 Expected behavior\n\nCompiles without any error.\n\n### Additional information about the issue\n\nGoogle code location where this reproduces: http://shortn/_EriWkk8A2g","author":{"url":"https://github.com/trevorade","@type":"Person","name":"trevorade"},"datePublished":"2024-10-29T16:37:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/60367/TypeScript/issues/60367"}