export const isBrowser = () => typeof window !== "undefined" && typeof window.document !== "undefined";
export const isWebWorker = () => typeof globalThis === "object" &&
    globalThis.constructor &&
    globalThis.constructor.name === "DedicatedWorkerGlobalScope";
export const isJsDom = () => (typeof window !== "undefined" && window.name === "nodejs") ||
    (typeof navigator !== "undefined" &&
        (navigator.userAgent.includes("Node.js") ||
            navigator.userAgent.includes("jsdom")));
// Supabase Edge Function provides a `Deno` global object
// without `version` property
export const isDeno = () => typeof Deno !== "undefined";
// Mark not-as-node if in Supabase Edge Function
export const isNode = () => typeof process !== "undefined" &&
    typeof process.versions !== "undefined" &&
    typeof process.versions.node !== "undefined" &&
    !isDeno();
export const getEnv = () => {
    let env;
    if (isBrowser()) {
        env = "browser";
    }
    else if (isNode()) {
        env = "node";
    }
    else if (isWebWorker()) {
        env = "webworker";
    }
    else if (isJsDom()) {
        env = "jsdom";
    }
    else if (isDeno()) {
        env = "deno";
    }
    else {
        env = "other";
    }
    return env;
};
let runtimeEnvironment;
export async function getRuntimeEnvironment() {
    if (runtimeEnvironment === undefined) {
        const env = getEnv();
        runtimeEnvironment = {
            library: "langchain-js",
            runtime: env,
        };
    }
    return runtimeEnvironment;
}
export function getEnvironmentVariable(name) {
    // Certain Deno setups will throw an error if you try to access environment variables
    // https://github.com/langchain-ai/langchainjs/issues/1412
    try {
        if (typeof process !== "undefined") {
            // eslint-disable-next-line no-process-env
            return process.env?.[name];
        }
        else if (isDeno()) {
            return Deno?.env.get(name);
        }
        else {
            return undefined;
        }
    }
    catch (e) {
        return undefined;
    }
}