diff --git a/db-datos/db.ts b/db-datos/db.js
similarity index 68%
rename from db-datos/db.ts
rename to db-datos/db.js
index 8781000..4ba189d 100644
--- a/db-datos/db.ts
+++ b/db-datos/db.js
@@ -1,5 +1,6 @@
-import { Database } from "bun:sqlite";
-import { drizzle } from "drizzle-orm/bun-sqlite";
+// @ts-check
+import Database from "better-sqlite3";
+import { drizzle } from "drizzle-orm/better-sqlite3";
 import { DB_PATH } from "./drizzle.config.js";
 import { migrateDb } from "./migrate.js";
 import * as schema from "./schema.js";
diff --git a/db-datos/drizzle.config.ts b/db-datos/drizzle.config.js
similarity index 73%
rename from db-datos/drizzle.config.ts
rename to db-datos/drizzle.config.js
index 058b309..3a95609 100644
--- a/db-datos/drizzle.config.ts
+++ b/db-datos/drizzle.config.js
@@ -1,11 +1,10 @@
-import type { Config } from "drizzle-kit";
-
 export const DB_PATH = process.env.DB_PATH ?? "../scraper/sqlite.db";
 
+/** @type { import("drizzle-kit").Config } */
 export default {
   schema: "./schema.ts",
   out: "./drizzle",
   dbCredentials: {
     url: DB_PATH,
   },
-} satisfies Config;
+};
diff --git a/db-datos/migrate.ts b/db-datos/migrate.js
similarity index 70%
rename from db-datos/migrate.ts
rename to db-datos/migrate.js
index c45fb9b..7e0ccd5 100644
--- a/db-datos/migrate.ts
+++ b/db-datos/migrate.js
@@ -1,7 +1,8 @@
-import Database from "bun:sqlite";
+// @ts-check
+import Database from "better-sqlite3";
 import { join, dirname } from "node:path";
-import { drizzle } from "drizzle-orm/bun-sqlite";
-import { migrate } from "drizzle-orm/bun-sqlite/migrator";
+import { drizzle } from "drizzle-orm/better-sqlite3";
+import { migrate } from "drizzle-orm/better-sqlite3/migrator";
 import * as schema from "./schema.js";
 import { DB_PATH } from "./drizzle.config.js";
 
@@ -11,7 +12,7 @@ export function migrateDb() {
   const db = drizzle(sqlite, { schema });
 
   migrate(db, { migrationsFolder: join(dirname(url.pathname), "drizzle") });
-  sqlite.run(`
+  sqlite.exec(`
 pragma journal_mode = WAL;
 PRAGMA synchronous = NORMAL;
 `);
diff --git a/db-datos/package.json b/db-datos/package.json
index 5020c26..92949dc 100644
--- a/db-datos/package.json
+++ b/db-datos/package.json
@@ -5,15 +5,19 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "generate": "drizzle-kit generate:sqlite"
+    "generate": "drizzle-kit generate:sqlite",
+    "migrate": "node db.js"
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "better-sqlite3": "^9.2.2",
     "drizzle-orm": "^0.29.1"
   },
   "devDependencies": {
+    "@types/better-sqlite3": "^7.6.8",
+    "@types/node": "^20.10.6",
     "drizzle-kit": "^0.20.7"
   }
 }
diff --git a/db-datos/schema.ts b/db-datos/schema.js
similarity index 88%
rename from db-datos/schema.ts
rename to db-datos/schema.js
index a45efda..2b921b9 100644
--- a/db-datos/schema.ts
+++ b/db-datos/schema.js
@@ -1,3 +1,4 @@
+// @ts-check
 import { index, integer, sqliteTable, text } from "drizzle-orm/sqlite-core";
 
 export const precios = sqliteTable(
@@ -18,10 +19,10 @@ export const precios = sqliteTable(
     return {
       preciosEanIdx: index("precios_ean_idx").on(precios.ean),
     };
-  }
+  },
 );
 
-export type Precio = typeof precios.$inferSelect;
+/** @typedef {typeof precios.$inferSelect} Precio */
 
 export const productoUrls = sqliteTable("producto_urls", {
   id: integer("id", { mode: "number" }).primaryKey({ autoIncrement: true }),
@@ -30,4 +31,4 @@ export const productoUrls = sqliteTable("producto_urls", {
   lastSeen: integer("last_seen", { mode: "timestamp" }).notNull(),
 });
 
-export type ProductUrl = typeof productoUrls.$inferSelect;
+/** @typedef {typeof productoUrls.$inferSelect} ProductUrl */
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 40bca24..9c2f61a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -8,10 +8,19 @@ importers:
 
   db-datos:
     dependencies:
+      better-sqlite3:
+        specifier: ^9.2.2
+        version: 9.2.2
       drizzle-orm:
         specifier: ^0.29.1
         version: 0.29.3(@types/better-sqlite3@7.6.8)(better-sqlite3@9.2.2)
     devDependencies:
+      '@types/better-sqlite3':
+        specifier: ^7.6.8
+        version: 7.6.8
+      '@types/node':
+        specifier: ^20.10.6
+        version: 20.11.0
       drizzle-kit:
         specifier: ^0.20.7
         version: 0.20.12
diff --git a/readme.md b/readme.md
index 847b3fb..7e4f7b8 100644
--- a/readme.md
+++ b/readme.md
@@ -2,31 +2,40 @@
 
 scrapeo "masivo" de precios y datos en supermercados argentinos
 
-## componentes (en orden de proceso)
+## componentes
 
-- los link scrapers ([link-scrapers/](./link-scrapers/)) crean listas de links a productos para scrapear
+### scraper-rs
 
-  (no hace falta correrlos porque ya hay listas armadas en [data/](./data/))
+el [scraper](./scraper-rs/) busca links de productos a scrapear, descarga todos los links, extrae varios datos y los guarda en una base de datos SQLite (definida en [db-datos](./db-datos/schema.ts)).
 
-- el [scraper](./scraper/) descarga todos los links, extrayendo varios datos y guardandolos en una base de datos SQLite (definida en [db-datos](./db-datos/schema.ts))
-- el [sitio](./sitio/) renderiza páginas a partir de la base de datos y hace gráficos lindos
+(antes había un scraper escrito en JavaScript, pero por problemas de _reliability_ lo reescribí en Rust (?))
+
+### sitio
+
+el [sitio](./sitio/) renderiza páginas a partir de la base de datos y hace gráficos lindos.
 
 ## setup
 
-hay que instalar [Bun](https://bun.sh/), que lo estoy usando porque hacía que el scraper corra más rápido. quizás en el futuro lo reemplace con good old Node.js.
+para el schema de la base de datos y el sitio, es necesario [Node.js](https://nodejs.org/) y [pnpm](https://pnpm.io/). para el scraper, es necesario [Rust](https://www.rust-lang.org/) estable.
+
+crea la base de datos:
+```
+cd db-datos/
+pnpm install
+pnpm migrate
+```
 
 después, escrapea un sample de productos de Carrefour a una BD:
 
 ```
-cd scraper/
-bun install
-bun cli.ts scrap ./data/samples/Carrefour.50.txt
+cd ../scraper-rs/
+cargo run -- fetch-list ../data/samples/Carrefour.50.txt
 ```
 
 ahora miralo en el sitio:
 
 ```
-cd sitio/
-bun install
-bun dev
+cd ../sitio/
+pnpm install
+pnpm dev
 ```