first commit

util/grpc-promisify.js

@@ -0,0 +1,27 @@
+function promisify (client) {
+  Object.keys(Object.getPrototypeOf(client)).forEach(functionName => {
+    if (functionName.startsWith('$')) {
+      return
+    }
+    const originalFunction = client[functionName]
+    client[functionName] = (request, callback) => {
+      if (callback && typeof callback === 'function') {
+        return originalFunction.call(client, request, (error, response) => {
+          callback(error, response)
+        })
+      }
+      return new Promise((resolve, reject) => {
+        originalFunction.call(client, request, (error, response) => {
+          if (error) {
+            reject(error)
+          } else {
+            resolve(response)
+          }
+        })
+      })
+    }
+    client[functionName].interceptors = originalFunction.interceptors
+  })
+}
+
+module.exports = promisify