Initial

resources/app/node_modules/@smithy/eventstream-serde-universal/dist-es/getChunkedStream.js

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+export function getChunkedStream(source) {
+    let currentMessageTotalLength = 0;
+    let currentMessagePendingLength = 0;
+    let currentMessage = null;
+    let messageLengthBuffer = null;
+    const allocateMessage = (size) => {
+        if (typeof size !== "number") {
+            throw new Error("Attempted to allocate an event message where size was not a number: " + size);
+        }
+        currentMessageTotalLength = size;
+        currentMessagePendingLength = 4;
+        currentMessage = new Uint8Array(size);
+        const currentMessageView = new DataView(currentMessage.buffer);
+        currentMessageView.setUint32(0, size, false);
+    };
+    const iterator = async function* () {
+        const sourceIterator = source[Symbol.asyncIterator]();
+        while (true) {
+            const { value, done } = await sourceIterator.next();
+            if (done) {
+                if (!currentMessageTotalLength) {
+                    return;
+                }
+                else if (currentMessageTotalLength === currentMessagePendingLength) {
+                    yield currentMessage;
+                }
+                else {
+                    throw new Error("Truncated event message received.");
+                }
+                return;
+            }
+            const chunkLength = value.length;
+            let currentOffset = 0;
+            while (currentOffset < chunkLength) {
+                if (!currentMessage) {
+                    const bytesRemaining = chunkLength - currentOffset;
+                    if (!messageLengthBuffer) {
+                        messageLengthBuffer = new Uint8Array(4);
+                    }
+                    const numBytesForTotal = Math.min(4 - currentMessagePendingLength, bytesRemaining);
+                    messageLengthBuffer.set(value.slice(currentOffset, currentOffset + numBytesForTotal), currentMessagePendingLength);
+                    currentMessagePendingLength += numBytesForTotal;
+                    currentOffset += numBytesForTotal;
+                    if (currentMessagePendingLength < 4) {
+                        break;
+                    }
+                    allocateMessage(new DataView(messageLengthBuffer.buffer).getUint32(0, false));
+                    messageLengthBuffer = null;
+                }
+                const numBytesToWrite = Math.min(currentMessageTotalLength - currentMessagePendingLength, chunkLength - currentOffset);
+                currentMessage.set(value.slice(currentOffset, currentOffset + numBytesToWrite), currentMessagePendingLength);
+                currentMessagePendingLength += numBytesToWrite;
+                currentOffset += numBytesToWrite;
+                if (currentMessageTotalLength && currentMessageTotalLength === currentMessagePendingLength) {
+                    yield currentMessage;
+                    currentMessage = null;
+                    currentMessageTotalLength = 0;
+                    currentMessagePendingLength = 0;
+                }
+            }
+        }
+    };
+    return {
+        [Symbol.asyncIterator]: iterator,
+    };
+}