Fix code style

Author: tshemsedinov

JavaScript/1-asyncify.js

@@ -2,18 +2,20 @@
 
 // Synchronous function to callback-last
 
-const asyncify = (fn) => (...args) => {
-  const callback = args.pop();
-  setTimeout(() => {
-    try {
-      const result = fn(...args);
-      if (result instanceof Error) callback(result);
-      else callback(null, result);
-    } catch (error) {
-      callback(error);
-    }
-  }, 0);
-};
+const asyncify =
+  (fn) =>
+  (...args) => {
+    const callback = args.pop();
+    setTimeout(() => {
+      try {
+        const result = fn(...args);
+        if (result instanceof Error) callback(result);
+        else callback(null, result);
+      } catch (error) {
+        callback(error);
+      }
+    }, 0);
+  };
 
 // Usage
 

JavaScript/2-promisify.js

@@ -2,14 +2,26 @@
 
 // Callback-last function to Promise-returning
 
-const promisify = (fn) => (...args) => new Promise(
-  (resolve, reject) => {
-    fn(...args, (err, data) => {
-      if (err) reject(err);
-      else resolve(data);
+const promisify =
+  (fn) =>
+  (...args) =>
+    new Promise((resolve, reject) => {
+      fn(...args, (err, data) => {
+        if (err) reject(err);
+        else resolve(data);
+      });
     });
-  }
-);
+
+/*
+const promisify = (fn) => (...args) => {
+  const { promise, resolve, reject } = Promise.withResolvers();
+  fn(...args, (err, data) => {
+    if (err) reject(err);
+    else resolve(data);
+  });
+  return promise;
+};
+*/
 
 // Usage
 

JavaScript/3-promisify-sync.js

@@ -2,15 +2,17 @@
 
 // Synchronous function to Promise-returning
 
-const promisifySync = (fn) => (...args) => {
-  try {
-    const result = fn(...args);
-    if (result instanceof Error) return Promise.reject(result);
-    else return Promise.resolve(result);
-  } catch (error) {
-    return Promise.reject(error);
-  }
-};
+const promisifySync =
+  (fn) =>
+  (...args) => {
+    try {
+      const result = fn(...args);
+      if (result instanceof Error) return Promise.reject(result);
+      else return Promise.resolve(result);
+    } catch (error) {
+      return Promise.reject(error);
+    }
+  };
 
 // Usage
 

JavaScript/4-callbackify.js

@@ -2,16 +2,18 @@
 
 // Promise-returning function callback-last / error-first
 
-const callbackify = (fn) => (...args) => {
-  const callback = args.pop();
-  fn(...args)
-    .then((value) => {
-      callback(null, value);
-    })
-    .catch((reason) => {
-      callback(reason);
-    });
-};
+const callbackify =
+  (fn) =>
+  (...args) => {
+    const callback = args.pop();
+    fn(...args)
+      .then((value) => {
+        callback(null, value);
+      })
+      .catch((reason) => {
+        callback(reason);
+      });
+  };
 
 // Usage
 

JavaScript/5-promise-to-cb.js

@@ -3,11 +3,13 @@
 // Convert Promise to callback-last
 
 const promiseToCallbackLast = (promise) => (callback) => {
-  promise.then((value) => {
-    callback(null, value);
-  }).catch((reason) => {
-    callback(reason);
-  });
+  promise
+    .then((value) => {
+      callback(null, value);
+    })
+    .catch((reason) => {
+      callback(reason);
+    });
 };
 
 // Usage