@langchain/core
Version:
Core LangChain.js abstractions and schemas
51 lines (50 loc) • 1.91 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.consumeAsyncIterableInContext = exports.consumeIteratorInContext = exports.isAsyncIterable = exports.isIterator = exports.isIterableIterator = void 0;
const index_js_1 = require("../singletons/index.cjs");
const config_js_1 = require("./config.cjs");
function isIterableIterator(thing) {
return (typeof thing === "object" &&
thing !== null &&
typeof thing[Symbol.iterator] === "function" &&
// avoid detecting array/set as iterator
typeof thing.next === "function");
}
exports.isIterableIterator = isIterableIterator;
const isIterator = (x) => x != null &&
typeof x === "object" &&
"next" in x &&
typeof x.next === "function";
exports.isIterator = isIterator;
function isAsyncIterable(thing) {
return (typeof thing === "object" &&
thing !== null &&
typeof thing[Symbol.asyncIterator] ===
"function");
}
exports.isAsyncIterable = isAsyncIterable;
function* consumeIteratorInContext(context, iter) {
while (true) {
const { value, done } = index_js_1.AsyncLocalStorageProviderSingleton.runWithConfig((0, config_js_1.pickRunnableConfigKeys)(context), iter.next.bind(iter), true);
if (done) {
break;
}
else {
yield value;
}
}
}
exports.consumeIteratorInContext = consumeIteratorInContext;
async function* consumeAsyncIterableInContext(context, iter) {
const iterator = iter[Symbol.asyncIterator]();
while (true) {
const { value, done } = await index_js_1.AsyncLocalStorageProviderSingleton.runWithConfig((0, config_js_1.pickRunnableConfigKeys)(context), iterator.next.bind(iter), true);
if (done) {
break;
}
else {
yield value;
}
}
}
exports.consumeAsyncIterableInContext = consumeAsyncIterableInContext;