ic-websocket-js/lib/esm/types.js

IC WebSocket on the Internet Computer

import { Principal } from "@dfinity/principal";
export const isClientIncomingMessage = (arg) => {
    return (arg instanceof Object &&
        typeof arg.key === "string" &&
        arg.content instanceof Uint8Array &&
        arg.cert instanceof Uint8Array &&
        arg.tree instanceof Uint8Array);
};
const isPrincipal = (arg) => {
    // the Principal.from method doesn't throw if the argument is a string,
    // but in our case it must already be a Principal instance
    // see https://github.com/dfinity/agent-js/blob/349598672c50d738100d123a43f5d1c8fac77854/packages/principal/src/index.ts#L39-L53
    if (typeof arg === "string") {
        return false;
    }
    try {
        Principal.from(arg);
    }
    catch (e) {
        console.error("isPrincipal", e);
        return false;
    }
    return true;
};
export const isGatewayHandshakeMessage = (arg) => {
    return (arg instanceof Object &&
        isPrincipal(arg.gateway_principal));
};
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