rewrite with typescript

.github/workflows/bun-test.yml

@@ -3,25 +3,25 @@ name: chDB-bun
 on:
   pull_request:
     paths-ignore:
-      - '**/.md'
+      - "**/.md"
   push:
-    branches: [ "main" ]
+    branches: ["main"]
     paths-ignore:
-      - '**/.md'
+      - "**/.md"
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Fetch library
-      run: |
+      - uses: actions/checkout@v3
+      - name: Fetch library
+        run: |
           sudo wget https://github.com/metrico/libchdb/releases/latest/download/libchdb.zip
           sudo unzip libchdb.zip
           sudo mv libchdb.so /usr/lib/libchdb.so
           sudo ldconfig
-    - uses: oven-sh/setup-bun@v1
-      with:
-        bun-version: latest
-    - run: bun install
-    - run: bun example.js
+      - uses: oven-sh/setup-bun@v1
+        with:
+          bun-version: latest
+      - run: bun install
+      - run: bun example.ts

.gitignore

@@ -1,2 +1,6 @@
 node_modules
 
+/lib/libchdb_bun.dylib
+/lib/libchdb.so
+/lib/index.js
+/lib/index.d.ts

example.js → example.ts

@@ -1,13 +1,13 @@
-import { db, chdb } from '.';
+import { db, chdb } from ".";
 
-const conn = new db('CSV', '/tmp')
+const conn = new db("CSV", "/tmp");
 var result;
 
 // Test query
 result = conn.query("SELECT version(), chdb()");
-console.log(result)
+console.log(result);
 
 // Test session
 conn.session("CREATE FUNCTION IF NOT EXISTS hello AS () -> 'chDB'");
 result = conn.session("SELECT hello()", "CSV");
-console.log(result)
+console.log(result);

index.ts

@@ -0,0 +1,39 @@
+import { dlopen, FFIType, suffix, CString, ptr } from "bun:ffi";
+
+const path = `lib/libchdb_bun.${suffix}`;
+
+const { symbols: chdb } = dlopen(path, {
+  Execute: {
+    args: [FFIType.cstring, FFIType.cstring],
+    returns: FFIType.cstring,
+  },
+  ExecuteSession: {
+    args: [FFIType.cstring, FFIType.cstring, FFIType.cstring],
+    returns: FFIType.cstring,
+  },
+});
+
+class db {
+  format: string;
+  path: string;
+  query(query: string, format: string = "CSV") {
+    if (!query) {
+      return "";
+    }
+    return chdb.Execute(Buffer.from(query + "\0"), Buffer.from(format + "\0"));
+  }
+  session(query: string, format: string = "CSV", path: string = "/tmp") {
+    if (!query) return "";
+    return chdb.ExecuteSession(
+      Buffer.from(query + "\0"),
+      Buffer.from(format + "\0"),
+      Buffer.from(path + "\0")
+    );
+  }
+  constructor(format: string = "JSONCompact", path: string = ".") {
+    this.format = format;
+    this.path = path;
+  }
+}
+
+export { chdb, db };

lib/README.md

@@ -1,4 +1,7 @@
 ## libchdb `Execute` function binding
-```
-gcc -shared -fPIC -o libchdb_bun.so libchdb_bun.c -lchdb
+
+```bash
+# build the dynamic library
+
+./build.sh
 ```

lib/build.sh

@@ -0,0 +1,8 @@
+if [ "$(uname)" == "Darwin" ]; then
+    gcc -dynamiclib -o libchdb_bun.dylib -L. -lchdb libchdb_bun.c 
+elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+    gcc -shared -fPIC -o libchdb_bun.so libchdb_bun.c -L. -lchdb
+else
+    echo "Unsupported operating system"
+    exit 1
+fi

package.json

@@ -1,17 +1,34 @@
 {
   "name": "chdb-bun",
   "version": "1.0.4",
-  "module": "index.js",
-  "type": "module",
-  "author": "Lorenzo Mangani <[email protected]>",
-  "license": "Apache2.0",
+  "module": "lib/index.js",
+  "types": "lib/index.d.ts",
   "scripts": {
-    "build": "cd lib && gcc -shared -fPIC -o libchdb_bun.so libchdb_bun.c -lchdb"
+    "build:lib": "cd lib && ./build.sh",
+    "build:ts": "bun build index.ts --target=bun --outfile=lib/index.js --sourcemap=inline && tsc --declaration --emitDeclarationOnly --types bun-types --declarationDir lib index.ts",
+    "build": "bun run build:ts && bun run build:lib"
   },
+  "type": "module",
   "devDependencies": {
-    "bun-types": "^0.5.0"
+    "bun-types": "^1.0.19",
+    "typescript": "^5.3.3"
   },
-  "directories":{
-     "lib": "lib"
-  }
+  "directories": {
+    "lib": "lib"
+  },
+  "files": [
+    "lib"
+  ],
+  "maintainers": [
+    {
+      "name": "Farmer Sun",
+      "email": "[email protected]"
+    },
+    {
+      "name": "Lorenzo Mangani",
+      "email": "[email protected]"
+    }
+  ],
+  "author": "Lorenzo Mangani <[email protected]>",
+  "license": "Apache2.0"
 }

tsconfig.json

@@ -1,20 +1,17 @@
 {
   "compilerOptions": {
-    "lib": [
-      "ESNext"
-    ],
+    "lib": ["ESNext"],
     "module": "esnext",
     "target": "esnext",
     "moduleResolution": "bundler",
     "strict": true,
     "downlevelIteration": true,
     "skipLibCheck": true,
-    "jsx": "react-jsx",
     "allowSyntheticDefaultImports": true,
     "forceConsistentCasingInFileNames": true,
-    "allowJs": true,
+    "allowJs": false,
     "types": [
       "bun-types" // add Bun global
     ]
   }
-}
+}