wip: zen
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@@ -64,23 +64,21 @@ export const anthropicHelper: ProviderHelper = ({ reqModel, providerModel }) =>
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newBuffer.set(value, buffer.length)
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buffer = newBuffer
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if (buffer.length < 4) return
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// The first 4 bytes are the total length (big-endian).
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const totalLength = new DataView(buffer.buffer, buffer.byteOffset, buffer.byteLength).getUint32(0, false)
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const messages = []
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// If we don't have the full message yet, wait for more chunks.
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if (buffer.length < totalLength) return
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while (buffer.length >= 4) {
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// first 4 bytes are the total length (big-endian)
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const totalLength = new DataView(buffer.buffer, buffer.byteOffset, buffer.byteLength).getUint32(0, false)
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try {
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// Decode exactly the sub-slice for this event.
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const subView = buffer.subarray(0, totalLength)
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const decoded = codec.decode(subView)
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// wait for more chunks
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if (buffer.length < totalLength) break
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// Slice the used bytes out of the buffer, removing this message.
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buffer = buffer.slice(totalLength)
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try {
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const subView = buffer.subarray(0, totalLength)
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const decoded = codec.decode(subView)
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buffer = buffer.slice(totalLength)
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// Process message
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/* Example of Bedrock data
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/* Example of Bedrock data
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```
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{
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bytes: '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',
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@@ -112,22 +110,28 @@ export const anthropicHelper: ProviderHelper = ({ reqModel, providerModel }) =>
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```
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*/
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/* Example of Anthropic data
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/* Example of Anthropic data
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```
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event: message_delta
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data: {"type":"message_start","message":{"model":"claude-opus-4-5-20251101","id":"msg_01ETvwVWSKULxzPdkQ1xAnk2","type":"message","role":"assistant","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":11543,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":11543,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard"}}}
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```
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*/
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if (decoded.headers[":message-type"]?.value !== "event") return
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const data = decoder.decode(decoded.body, { stream: true })
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if (decoded.headers[":message-type"]?.value === "event") {
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const data = decoder.decode(decoded.body, { stream: true })
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const parsedDataResult = JSON.parse(data)
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delete parsedDataResult.p
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const utf8 = atob(parsedDataResult.bytes)
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return encoder.encode(["event: message_start", "\n", "data: " + utf8, "\n\n"].join(""))
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} catch (e) {
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console.log(e)
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const parsedDataResult = JSON.parse(data)
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delete parsedDataResult.p
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const bytes = atob(parsedDataResult.bytes)
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const eventName = JSON.parse(bytes).type
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messages.push([`event: ${eventName}`, "\n", `data: ${bytes}`, "\n\n"].join(""))
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}
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} catch (e) {
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console.log("@@@EE@@@")
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console.log(e)
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break
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}
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}
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return encoder.encode(messages.join(""))
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}
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},
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streamSeparator: "\n\n",
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