Lines 1-30javascript
2var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
3 var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
4 if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
5 else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
6 return c > 3 && r && Object.defineProperty(target, key, r), r;
8Object.defineProperty(exports, "__esModule", { value: true });
9exports.CheckpointerLifecycle = exports.CHECKPOINT_PACKAGES = void 0;
10exports.buildCheckpointer = buildCheckpointer;
11const common_1 = require("@nestjs/common");
12const langgraph_1 = require("@langchain/langgraph");
MediumDynamic Require
Package source references dynamic require/import behavior.
dist/checkpointer.jsView on unpkg · L10 13const optional_require_1 = require("./optional-require");
14/** npm names of the optional checkpoint saver packages. */
15exports.CHECKPOINT_PACKAGES = {
16 postgres: "@langchain/langgraph-checkpoint-postgres",
17 sqlite: "@langchain/langgraph-checkpoint-sqlite",
18 mongodb: "@langchain/langgraph-checkpoint-mongodb",
19 redis: "@langchain/langgraph-checkpoint-redis",
21function isModuleNotFound(err) {
22 const code = err?.code;
23 return code === "MODULE_NOT_FOUND" || code === "ERR_MODULE_NOT_FOUND";
26 * Lazily loads a checkpoint saver package, translating a missing install into
27 * a clear, actionable bootstrap error naming the package and the exact command.
29function loadCheckpointPackage(pkg) {