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Add bytes() method to Blob for reading bytes into a Uint8Array #197

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Add bytes() method to Blob for reading bytes into a Uint8Array #197

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Add bytes() method to Blob for reading bytes into a Uint8Array
bakkot May 10, 2024
7257898
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bakkot May 10, 2024
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12 changes: 12 additions & 0 deletions index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -300,6 +300,7 @@ interface Blob {
[NewObject] ReadableStream stream();
[NewObject] Promise<USVString> text();
[NewObject] Promise<ArrayBuffer> arrayBuffer();
[NewObject] Promise<ArrayBuffer> bytes();
};

enum EndingType { "transparent", "native" };
Expand Down Expand Up @@ -632,6 +633,17 @@ The <dfn method for=Blob>arrayBuffer()</dfn> method, when invoked, must run thes
1. Return the result of transforming |promise| by a fulfillment handler that returns
a new {{ArrayBuffer}} whose contents are its first argument.

### The {{Blob/bytes()}} method ### {#bytes-method-algo}

The <dfn method for=Blob>bytes()</dfn> method, when invoked, must run these steps:

1. Let |stream| be the result of calling [=get stream=] on [=this=].
1. Let |reader| be the result of [=get a reader|getting a reader=] from |stream|.
If that threw an exception, return a new promise rejected with that exception.
1. Let |promise| be the result of [=read all bytes|reading all bytes=] from |stream| with |reader|.
1. Return the result of transforming |promise| by a fulfillment handler that returns
a new {{Uint8Array}} wrapping an {{ArrayBuffer}} containing its first argument.

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