feat: Format JSON command (#12)

* feat: add JSON format command

* chore: tab indentation

README.md

@@ -81,6 +81,18 @@ Replace all *substring* occurences with *replacement* string. If no *replacement
 
 `I'm Will, Will's son /R 'Will' 'Bill'` → `I'm Bill, Bill's son`
 
+### Format JSON `/J '<indent>'`
+Prettify your JSON and format it with custom indentation. *indent* argument takes either number of spaces or 't' for tab indentation. If no argument is provided, 2 spaces used as a default value.
+
+`{"name":"George", "occupation":"dentist"} /J '4'`  
+↓  
+```
+{
+    "name": "George",
+    "occupation": "dentist"
+}
+```
+
 ![](./string-multitool-example.gif)
 
 <a href='https://ko-fi.com/I2I0W98PT' target='_blank'><img height='36' style='border:0px;height:36px;' src='https://storage.ko-fi.com/cdn/kofi3.png?v=3' border='0' alt='Buy Me a Coffee at ko-fi.com' /></a>

transform.js

@@ -147,6 +147,10 @@ function run(argv) {
     return string.replaceAll(substring, replacement);
   };
 
+  const toJSON = (string = '', indent = 2) => {
+    return JSON.stringify(JSON.parse(string), null, indent === 't' ? '\t' : parseInt(indent));
+  };
+
   const toEncodedURI = (string = '') => {
     return encodeURI(string);
   };
@@ -212,6 +216,13 @@ function run(argv) {
       args: 2,
       pattern: `R${REQUIRED_ARGUMENT}${OPTIONAL_ARGUMENT}`,
     },
+    J: {
+      name: 'Format JSON',
+      hint: `Takes one argument: ${COMMAND_SEPARATOR}J '<indent>'. Integer of indentation spaces or 't' for tab char`,
+      transform: toJSON,
+      args: 1,
+      pattern: `J${OPTIONAL_ARGUMENT}`,
+    },
   };
 
   const allCommands = {
@@ -294,7 +305,7 @@ function run(argv) {
       items = [
         {
           uid: 'error',
-          title: 'Error',
+          title: 'Could not process. Invalid value or param',
           subtitle,
           arg: string,
           icon,
@@ -316,7 +327,15 @@ function run(argv) {
           },
         };
       } catch {
-        return {};
+        return {
+          uid: command.name.toLowerCase(),
+          title: 'Could not process. Invalid value or param',
+          subtitle: command.hint ? `${command.name}. ${command.hint}` : command.name,
+          arg: string,
+          icon: {
+            path: `./${command.name}.png`,
+          },
+        };
       }
     });
   }