Initial

resources/app/node_modules/@smithy/eventstream-codec/dist-es/EventStreamCodec.js

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+import { Crc32 } from "@aws-crypto/crc32";
+import { HeaderMarshaller } from "./HeaderMarshaller";
+import { splitMessage } from "./splitMessage";
+export class EventStreamCodec {
+    constructor(toUtf8, fromUtf8) {
+        this.headerMarshaller = new HeaderMarshaller(toUtf8, fromUtf8);
+        this.messageBuffer = [];
+        this.isEndOfStream = false;
+    }
+    feed(message) {
+        this.messageBuffer.push(this.decode(message));
+    }
+    endOfStream() {
+        this.isEndOfStream = true;
+    }
+    getMessage() {
+        const message = this.messageBuffer.pop();
+        const isEndOfStream = this.isEndOfStream;
+        return {
+            getMessage() {
+                return message;
+            },
+            isEndOfStream() {
+                return isEndOfStream;
+            },
+        };
+    }
+    getAvailableMessages() {
+        const messages = this.messageBuffer;
+        this.messageBuffer = [];
+        const isEndOfStream = this.isEndOfStream;
+        return {
+            getMessages() {
+                return messages;
+            },
+            isEndOfStream() {
+                return isEndOfStream;
+            },
+        };
+    }
+    encode({ headers: rawHeaders, body }) {
+        const headers = this.headerMarshaller.format(rawHeaders);
+        const length = headers.byteLength + body.byteLength + 16;
+        const out = new Uint8Array(length);
+        const view = new DataView(out.buffer, out.byteOffset, out.byteLength);
+        const checksum = new Crc32();
+        view.setUint32(0, length, false);
+        view.setUint32(4, headers.byteLength, false);
+        view.setUint32(8, checksum.update(out.subarray(0, 8)).digest(), false);
+        out.set(headers, 12);
+        out.set(body, headers.byteLength + 12);
+        view.setUint32(length - 4, checksum.update(out.subarray(8, length - 4)).digest(), false);
+        return out;
+    }
+    decode(message) {
+        const { headers, body } = splitMessage(message);
+        return { headers: this.headerMarshaller.parse(headers), body };
+    }
+    formatHeaders(rawHeaders) {
+        return this.headerMarshaller.format(rawHeaders);
+    }
+}