make d.ts files specific to the lib (#25)

Author: Søren Hansen

examples/better-sqlite3/src/squeeel.d.ts …-sqlite3/src/squeeel.better-sqlite3.d.tsexamples/better-sqlite3/src/squeeel.d.ts renamed to examples/better-sqlite3/src/squeeel.better-sqlite3.d.ts examples/better-sqlite3/src/squeeel.d.ts renamed to examples/better-sqlite3/src/squeeel.better-sqlite3.d.ts

@@ -27,18 +27,18 @@ npx @squeeel/cli gen
 
 The database url, used libraries and such are automatically detected. If you need to configure anything, please run `npx @squeeel/cli gen --help` to get a list of configuration options.
 
-That's it! Your SQL queries are now type-safe. The tool will generate a `squeeel.d.ts` file with all the necessary type definitions.
+That's it! Your SQL queries are now type-safe. The tool will generate a `squeeel.<lib-name>.d.ts` file with all the necessary type definitions.
 
 ## Example
 
 This example is using node-postgres:
 
-After running squeeel
+After running squeeel, a `squeeel.pg.d.ts` file will be generated, and
 
 ```typescript
 const result = await client.query(
   "SELECT id, name, age FROM users WHERE age >= $1",
-  // Typescript knows the types the arguments need to have
+  // Typescript knows the types the arguments need to have, e.g. ["something"] would be an error
   [18]
 );
 
@@ -58,7 +58,7 @@ const result = await client.query(
 
 ### Unsupported Libraries
 
-Due to TypeScript limitations with tagged templates, we cannot support:
+Due to TypeScript limitations with tagged templates not being generic, we cannot support:
 - postgres.js
 - @vercel/postgres
 - bun-sql

examples/mysql2/src/squeeel.d.ts examples/mysql2/src/squeeel.mysql2.d.tsexamples/mysql2/src/squeeel.d.ts renamed to examples/mysql2/src/squeeel.mysql2.d.ts

@@ -296,7 +296,7 @@ async fn create_d_ts_files(
     let mut tasks = Vec::with_capacity(queries_by_lib.keys().len());
     for (lib, queries) in queries_by_lib {
         tasks.push(tokio::spawn({
-            async move { lib.create_d_ts_file(queries).await }
+            async move { (lib, lib.create_d_ts_file(queries).await) }
         }));
     }
 
@@ -305,28 +305,28 @@ async fn create_d_ts_files(
         outputs.push(task.await.unwrap());
     }
 
-    let cm: Lrc<SourceMap> = Default::default();
-    let code = {
-        let mut buf = Vec::new();
+    for (lib, module) in outputs {
+        let cm: Lrc<SourceMap> = Default::default();
+        let code = {
+            let mut buf = Vec::new();
+
+            {
+                let mut emitter = Emitter {
+                    cfg: Default::default(),
+                    cm: cm.clone(),
+                    comments: None,
+                    wr: JsWriter::new(cm, "\n", &mut buf, None),
+                };
 
-        {
-            let mut emitter = Emitter {
-                cfg: Default::default(),
-                cm: cm.clone(),
-                comments: None,
-                wr: JsWriter::new(cm, "\n", &mut buf, None),
-            };
-
-            for module in outputs {
                 emitter.emit_module(&module).unwrap();
             }
-        }
 
-        String::from_utf8_lossy(&buf).to_string()
-    };
+            String::from_utf8_lossy(&buf).to_string()
+        };
 
-    let d_ts_path = dir.join("src/squeeel.d.ts");
-    std::fs::write(d_ts_path, code).unwrap();
+        let d_ts_path = dir.join(format!("src/squeeel.{lib}.d.ts"));
+        std::fs::write(d_ts_path, code).unwrap();
+    }
 
     Ok(())
 }