feat: abstract `node:os` (#422)

packages/core/package.json

@@ -52,6 +52,12 @@
       "import": "./dist/index.mjs",
       "require": "./dist/index.js"
     },
+    "./env": {
+      "types": "./dist/env.d.mts",
+      "edge-light": "./dist/env.edge-light.mjs",
+      "import": "./dist/env.mjs",
+      "require": "./dist/env.js"
+    },
     "./storage/FileSystem": {
       "types": "./dist/storage/FileSystem.d.mts",
       "edge-light": "./dist/storage/FileSystem.edge-light.mjs",

packages/core/src/TextSplitter.ts

-import { EOL } from "node:os";
+import { EOL } from "./env";
 // GitHub translated
 import { globalsHelper } from "./GlobalsHelper";
 import { DEFAULT_CHUNK_OVERLAP, DEFAULT_CHUNK_SIZE } from "./constants";

packages/core/src/env/index.edge-light.ts

+export const EOL = "\n";

packages/core/src/env/index.ts

+import { EOL } from "node:os";
+
+export { EOL };