@langchain/core
Version:
Core LangChain.js abstractions and schemas
85 lines (84 loc) • 2.76 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getEnv = exports.isNode = exports.isDeno = exports.isJsDom = exports.isWebWorker = exports.isBrowser = void 0;
exports.getRuntimeEnvironment = getRuntimeEnvironment;
exports.getRuntimeEnvironmentSync = getRuntimeEnvironmentSync;
exports.getEnvironmentVariable = getEnvironmentVariable;
const isBrowser = () => typeof window !== "undefined" && typeof window.document !== "undefined";
exports.isBrowser = isBrowser;
const isWebWorker = () => typeof globalThis === "object" &&
globalThis.constructor &&
globalThis.constructor.name === "DedicatedWorkerGlobalScope";
exports.isWebWorker = isWebWorker;
const isJsDom = () => (typeof window !== "undefined" && window.name === "nodejs") ||
(typeof navigator !== "undefined" && navigator.userAgent.includes("jsdom"));
exports.isJsDom = isJsDom;
// Supabase Edge Function provides a `Deno` global object
// without `version` property
const isDeno = () => typeof Deno !== "undefined";
exports.isDeno = isDeno;
// Mark not-as-node if in Supabase Edge Function
const isNode = () => typeof process !== "undefined" &&
typeof process.versions !== "undefined" &&
typeof process.versions.node !== "undefined" &&
!(0, exports.isDeno)();
exports.isNode = isNode;
const getEnv = () => {
let env;
if ((0, exports.isBrowser)()) {
env = "browser";
}
else if ((0, exports.isNode)()) {
env = "node";
}
else if ((0, exports.isWebWorker)()) {
env = "webworker";
}
else if ((0, exports.isJsDom)()) {
env = "jsdom";
}
else if ((0, exports.isDeno)()) {
env = "deno";
}
else {
env = "other";
}
return env;
};
exports.getEnv = getEnv;
let runtimeEnvironment;
/**
* @deprecated Use getRuntimeEnvironmentSync instead
*/
async function getRuntimeEnvironment() {
return getRuntimeEnvironmentSync();
}
function getRuntimeEnvironmentSync() {
if (runtimeEnvironment === undefined) {
const env = (0, exports.getEnv)();
runtimeEnvironment = {
library: "langchain-js",
runtime: env,
};
}
return runtimeEnvironment;
}
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 ((0, exports.isDeno)()) {
return Deno?.env.get(name);
}
else {
return undefined;
}
}
catch (e) {
return undefined;
}
}