Typed arrays in JavaScript are array-like objects that allow you to read and write raw binary data in memory buffers. Array objects can have any JavaScript value and grow and shrink dynamically. JavaScript engines optimize these arrays to make them faster.
A new typed array is produced as if using the TypedArray. from() method when invoked with an object argument. A new typed array view is constructed when called with a buffer and possibly a byteOffset and a length argument, which sees the supplied ArrayBuffer.
There are no holes in the array (yeah, holes are fast but). The array has already been allocated. As a result, establishing and initializing a typed array is quick.
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