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[javascript] Update timingSafeEqual #1210

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[javascript] Update timingSafeEqual #1210

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10 changes: 7 additions & 3 deletions javascript/src/timing_safe_equal.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// https://github.com/denoland/deno_std/blob/main/crypto/timing_safe_equal.ts

/** Make an assertion, if not `true`, then throw. */
Expand All @@ -18,10 +18,14 @@ export function timingSafeEqual(
return false;
}
if (!(a instanceof DataView)) {
a = new DataView(ArrayBuffer.isView(a) ? a.buffer : a);
a = ArrayBuffer.isView(a)
? new DataView(a.buffer, a.byteOffset, a.byteLength)
: new DataView(a);
}
if (!(b instanceof DataView)) {
b = new DataView(ArrayBuffer.isView(b) ? b.buffer : b);
b = ArrayBuffer.isView(b)
? new DataView(b.buffer, b.byteOffset, b.byteLength)
: new DataView(b);
}
assert(a instanceof DataView);
assert(b instanceof DataView);
Expand Down