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25 lines
758 B
25 lines
758 B
/**
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* Convert a typed array to a Buffer without a copy
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*
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* Author: Feross Aboukhadijeh <https://feross.org>
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* License: MIT
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*
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* `npm install typedarray-to-buffer`
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*/
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var isTypedArray = require('is-typedarray').strict
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module.exports = function typedarrayToBuffer (arr) {
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if (isTypedArray(arr)) {
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// To avoid a copy, use the typed array's underlying ArrayBuffer to back new Buffer
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var buf = Buffer.from(arr.buffer)
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if (arr.byteLength !== arr.buffer.byteLength) {
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// Respect the "view", i.e. byteOffset and byteLength, without doing a copy
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buf = buf.slice(arr.byteOffset, arr.byteOffset + arr.byteLength)
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}
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return buf
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} else {
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// Pass through all other types to `Buffer.from`
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return Buffer.from(arr)
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}
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}
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