Microsoft/TypeScript

lib.dom: DOMatrix constructor accepts TypedArrays, not only Arrays.

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#60.862 aberto em 27 de dez. de 2024

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 (2 comments) (0 reactions) (0 assignees)TypeScript (6.726 forks)batch import
BugDomain: lib.d.tsHelp Wanted

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Description

⚙ Compilation target

n/a

⚙ Library

lib.dom

Missing / Incorrect Definition

DOMMatrix and DOMMatrixReadonly constructors are typed as accepting only number[] but they also accept TypedArrays in all browsers.

The following code works in all browsers:

Sample Code

new DOMMatrix(new Float32Array(16))

Documentation Link

The MDN documentation doesn't really mention this detail, and the spec mentions a "sequence" which to me isn't very specific. Isn't a TypedArray a "sequence of numbers"?

Perhaps the type should probably be ArrayLike<number>.

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