diff --git a/.gitignore b/.gitignore
index 705f9921..4f5cbc63 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,14 +1,7 @@
 # Built files
-/*.js
-!node-swc/jest.config.js
 /*.map
-/*.d.ts
-native/artifacts.json
-artifacts.json
 *.node
 *.tmp_node_swc_fixture_test
-/scripts/npm/**/swc
-/scripts/npm/**/swc.exe
 .yarn/
 
 target/
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 00000000..501f590a
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,11 @@
+/* tslint:disable */
+/* eslint-disable */
+
+/* auto-generated by NAPI-RS */
+
+export type JsHello = Hello
+export class Hello {
+  constructor()
+  echo(query: string): Promise<string>
+  sayHello(): string
+}
diff --git a/index.js b/index.js
new file mode 100644
index 00000000..59635211
--- /dev/null
+++ b/index.js
@@ -0,0 +1,300 @@
+/* tslint:disable */
+/* eslint-disable */
+/* prettier-ignore */
+
+/* auto-generated by NAPI-RS */
+
+const { existsSync, readFileSync } = require('fs')
+const { join } = require('path')
+
+const { platform, arch } = process
+
+let nativeBinding = null
+let localFileExisted = false
+let loadError = null
+
+function isMusl() {
+  // For Node 10
+  if (!process.report || typeof process.report.getReport !== 'function') {
+    try {
+      const lddPath = require('child_process').execSync('which ldd').toString().trim()
+      return readFileSync(lddPath, 'utf8').includes('musl')
+    } catch (e) {
+      return true
+    }
+  } else {
+    const { glibcVersionRuntime } = process.report.getReport().header
+    return !glibcVersionRuntime
+  }
+}
+
+switch (platform) {
+  case 'android':
+    switch (arch) {
+      case 'arm64':
+        localFileExisted = existsSync(join(__dirname, 'walletkit.android-arm64.node'))
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.android-arm64.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-android-arm64')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'arm':
+        localFileExisted = existsSync(join(__dirname, 'walletkit.android-arm-eabi.node'))
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.android-arm-eabi.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-android-arm-eabi')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on Android ${arch}`)
+    }
+    break
+  case 'win32':
+    switch (arch) {
+      case 'x64':
+        localFileExisted = existsSync(
+          join(__dirname, 'walletkit.win32-x64-msvc.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.win32-x64-msvc.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-win32-x64-msvc')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'ia32':
+        localFileExisted = existsSync(
+          join(__dirname, 'walletkit.win32-ia32-msvc.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.win32-ia32-msvc.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-win32-ia32-msvc')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'arm64':
+        localFileExisted = existsSync(
+          join(__dirname, 'walletkit.win32-arm64-msvc.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.win32-arm64-msvc.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-win32-arm64-msvc')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on Windows: ${arch}`)
+    }
+    break
+  case 'darwin':
+    localFileExisted = existsSync(join(__dirname, 'walletkit.darwin-universal.node'))
+    try {
+      if (localFileExisted) {
+        nativeBinding = require('./walletkit.darwin-universal.node')
+      } else {
+        nativeBinding = require('@worldcoin/walletkit-darwin-universal')
+      }
+      break
+    } catch {}
+    switch (arch) {
+      case 'x64':
+        localFileExisted = existsSync(join(__dirname, 'walletkit.darwin-x64.node'))
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.darwin-x64.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-darwin-x64')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'arm64':
+        localFileExisted = existsSync(
+          join(__dirname, 'walletkit.darwin-arm64.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.darwin-arm64.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-darwin-arm64')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on macOS: ${arch}`)
+    }
+    break
+  case 'freebsd':
+    if (arch !== 'x64') {
+      throw new Error(`Unsupported architecture on FreeBSD: ${arch}`)
+    }
+    localFileExisted = existsSync(join(__dirname, 'walletkit.freebsd-x64.node'))
+    try {
+      if (localFileExisted) {
+        nativeBinding = require('./walletkit.freebsd-x64.node')
+      } else {
+        nativeBinding = require('@worldcoin/walletkit-freebsd-x64')
+      }
+    } catch (e) {
+      loadError = e
+    }
+    break
+  case 'linux':
+    switch (arch) {
+      case 'x64':
+        if (isMusl()) {
+          localFileExisted = existsSync(
+            join(__dirname, 'walletkit.linux-x64-musl.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./walletkit.linux-x64-musl.node')
+            } else {
+              nativeBinding = require('@worldcoin/walletkit-linux-x64-musl')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        } else {
+          localFileExisted = existsSync(
+            join(__dirname, 'walletkit.linux-x64-gnu.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./walletkit.linux-x64-gnu.node')
+            } else {
+              nativeBinding = require('@worldcoin/walletkit-linux-x64-gnu')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        }
+        break
+      case 'arm64':
+        if (isMusl()) {
+          localFileExisted = existsSync(
+            join(__dirname, 'walletkit.linux-arm64-musl.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./walletkit.linux-arm64-musl.node')
+            } else {
+              nativeBinding = require('@worldcoin/walletkit-linux-arm64-musl')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        } else {
+          localFileExisted = existsSync(
+            join(__dirname, 'walletkit.linux-arm64-gnu.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./walletkit.linux-arm64-gnu.node')
+            } else {
+              nativeBinding = require('@worldcoin/walletkit-linux-arm64-gnu')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        }
+        break
+      case 'arm':
+        localFileExisted = existsSync(
+          join(__dirname, 'walletkit.linux-arm-gnueabihf.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.linux-arm-gnueabihf.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-linux-arm-gnueabihf')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'riscv64':
+        if (isMusl()) {
+          localFileExisted = existsSync(
+            join(__dirname, 'walletkit.linux-riscv64-musl.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./walletkit.linux-riscv64-musl.node')
+            } else {
+              nativeBinding = require('@worldcoin/walletkit-linux-riscv64-musl')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        } else {
+          localFileExisted = existsSync(
+            join(__dirname, 'walletkit.linux-riscv64-gnu.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./walletkit.linux-riscv64-gnu.node')
+            } else {
+              nativeBinding = require('@worldcoin/walletkit-linux-riscv64-gnu')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        }
+        break
+      case 's390x':
+        localFileExisted = existsSync(
+          join(__dirname, 'walletkit.linux-s390x-gnu.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./walletkit.linux-s390x-gnu.node')
+          } else {
+            nativeBinding = require('@worldcoin/walletkit-linux-s390x-gnu')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on Linux: ${arch}`)
+    }
+    break
+  default:
+    throw new Error(`Unsupported OS: ${platform}, architecture: ${arch}`)
+}
+
+if (!nativeBinding) {
+  if (loadError) {
+    throw loadError
+  }
+  throw new Error(`Failed to load native binding`)
+}
+
+const { Hello } = nativeBinding
+
+module.exports.Hello = Hello