Add Promise.try

Author: tshemsedinov

JavaScript/e-try.js

@@ -0,0 +1,67 @@
+'use strict';
+
+// Need node.js 23
+
+const sumSync = (a, b) => {
+  if (typeof a !== 'number') throw Error('Expected a: number');
+  if (typeof b !== 'number') throw Error('Expected b: number');
+  return a + b;
+};
+
+const sumAsync = async (a, b) => {
+  if (typeof a !== 'number') throw Error('Expected a: number');
+  if (typeof b !== 'number') throw Error('Expected b: number');
+  return a + b;
+};
+
+// Call sync, expected 5
+
+Promise.try(sumSync, 2, 3)
+  .then((result) => {
+    console.log({ result });
+  })
+  .catch((error) => {
+    console.error({ error: error.message });
+  })
+  .finally(() => {
+    console.log({ finally: '2+3=5' });
+  });
+
+// Call sync, expected error
+
+Promise.try(sumSync, '4', 5)
+  .then((result) => {
+    console.log({ result });
+  })
+  .catch((error) => {
+    console.error({ error: error.message });
+  })
+  .finally(() => {
+    console.log({ finally: 'Wrong type: a' });
+  });
+
+// Call async, expected 13
+
+Promise.try(sumAsync, 6, 7)
+  .then((result) => {
+    console.log({ result });
+  })
+  .catch((error) => {
+    console.error({ error: error.message });
+  })
+  .finally(() => {
+    console.log({ finally: '6+7=13' });
+  });
+
+// Call async, expected error
+
+Promise.try(sumAsync, 8, '9')
+  .then((result) => {
+    console.log({ result });
+  })
+  .catch((error) => {
+    console.error({ error: error.message });
+  })
+  .finally(() => {
+    console.log({ finally: 'Wrong type: b' });
+  });