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Viewing file:     decodePacket.browser.js (1.63 KB)      -rwxrwxr-x

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const commons_js_1 = require("./commons.js");
const base64_arraybuffer_1 = require("@socket.io/base64-arraybuffer");
const withNativeArrayBuffer = typeof ArrayBuffer === "function";
const decodePacket = (encodedPacket, binaryType) => {
    if (typeof encodedPacket !== "string") {
        return {
            type: "message",
            data: mapBinary(encodedPacket, binaryType)
        };
    }
    const type = encodedPacket.charAt(0);
    if (type === "b") {
        return {
            type: "message",
            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
        };
    }
    const packetType = commons_js_1.PACKET_TYPES_REVERSE[type];
    if (!packetType) {
        return commons_js_1.ERROR_PACKET;
    }
    return encodedPacket.length > 1
        ? {
            type: commons_js_1.PACKET_TYPES_REVERSE[type],
            data: encodedPacket.substring(1)
        }
        : {
            type: commons_js_1.PACKET_TYPES_REVERSE[type]
        };
};
const decodeBase64Packet = (data, binaryType) => {
    if (withNativeArrayBuffer) {
        const decoded = (0, base64_arraybuffer_1.decode)(data);
        return mapBinary(decoded, binaryType);
    }
    else {
        return { base64: true, data }; // fallback for old browsers
    }
};
const mapBinary = (data, binaryType) => {
    switch (binaryType) {
        case "blob":
            return data instanceof ArrayBuffer ? new Blob([data]) : data;
        case "arraybuffer":
        default:
            return data; // assuming the data is already an ArrayBuffer
    }
};
exports.default = decodePacket;