fixed the bug of help command.

package.json

@@ -28,6 +28,7 @@
     "ajv": "^8.12.0",
     "chalk": "^4.1.0",
     "chokidar": "^3.5.2",
+    "fast-levenshtein": "^3.0.0",
     "fs-extra": "^11.1.0",
     "indent-string": "^4.0.0",
     "inquirer": "^8.2.0",
@@ -50,6 +51,7 @@
     "@oclif/test": "^2",
     "@swc/core": "^1.3.2",
     "@types/chai": "^4.3.6",
+    "@types/fast-levenshtein": "^0.0.2",
     "@types/fs-extra": "^11.0.1",
     "@types/inquirer": "^8.1.3",
     "@types/js-yaml": "^4.0.5",
@@ -105,7 +107,10 @@
     "bin": "asyncapi",
     "plugins": [],
     "hooks": {
-      "command_not_found": ["./lib/hooks/command_not_found/myhook"]    },
+      "command_not_found": [
+        "./lib/hooks/command_not_found/myhook"
+      ]
+    },
     "macos": {
       "identifier": "com.asyncapi.cli"
     },

src/hooks/command_not_found/myhook.ts

@@ -1,7 +1,75 @@
-import {Hook} from '@oclif/core';
+import {Hook, toConfiguredId, CliUx} from '@oclif/core';
+import chalk from 'chalk';
+import {default as levenshtein} from 'fast-levenshtein';
+import { Help } from '@oclif/core';
 
-const hook: Hook<'command_not_found'> = async function (opts) {
-  if (opts.id === 'help') { process.stdout.write(`${opts.id} command not found.\n`);}
+export const closest = (target: string, possibilities: string[]): string =>
+  possibilities
+    .map((id) => ({distance: levenshtein.get(target, id, {useCollator: true}), id}))
+    .sort((a, b) => a.distance - b.distance)[0]?.id ?? '';
+
+const hook: Hook.CommandNotFound = async function (opts) {
+  if (opts.id === '--help') {
+    const help = new Help(this.config);
+    help.showHelp(['--help']);
+    return;
+  }
+  const hiddenCommandIds = new Set(opts.config.commands.filter((c) => {c.hidden;}).map((c) => c.id));
+  const commandIDs = [...opts.config.commandIDs, ...opts.config.commands.flatMap((c) => c.aliases)].filter(
+    (c) => !hiddenCommandIds.has(c),
+  );
+  //here we get the command ids and hidden command ids. 
+
+  if (commandIDs.length === 0) {return;}
+  // now we we return if the command id are not there.
+
+  let binHelp = `${opts.config.bin} help`;
+
+  const idSplit = opts.id.split(':');
+  if (opts.config.findTopic(idSplit[0])) {
+    // if valid topic, update binHelp with topic
+    binHelp = `${binHelp} ${idSplit[0]}`;
+  }
+
+  //if there is a topic in the opts we just upgrade the our commnad like 
+
+  // alter the suggestion in the help scenario so that help is the first command
+  // otherwise the user will be presented 'did you mean 'help'?' instead of 'did you mean "help <command>"?'
+  let suggestion = (/:?help:?/).test(opts.id)
+    ? ['help', ...opts.id.split(':').filter((cmd) => cmd !== 'help')].join(':')
+    : closest(opts.id, commandIDs);
+
+  let readableSuggestion = toConfiguredId(suggestion, this.config);
+  const originalCmd = toConfiguredId(opts.id, this.config);
+  this.warn(`${chalk.yellow(originalCmd)} is not a ${opts.config.bin} command.`);
+
+  let response = '';
+  try {
+    if (opts.id === 'help') {readableSuggestion = '--help';}
+    response = await CliUx.ux.prompt(`Did you mean ${chalk.blueBright(readableSuggestion)}? [y/n]`, {timeout: 10_000});
+  } catch (error) {
+    this.log('');
+    this.debug(error);
+  }
+
+  if (response === 'y') {
+    // this will split the original command from the suggested replacement, and gather the remaining args as varargs to help with situations like:
+    // confit set foo-bar -> confit:set:foo-bar -> config:set:foo-bar -> config:set foo-bar
+    let argv = opts.argv?.length ? opts.argv : opts.id.split(':').slice(suggestion.split(':').length);
+    if (suggestion.startsWith('help:')) {
+      // the args are the command/partial command you need help for (package:version)
+      // we created the suggestion variable to start with "help" so slice the first entry
+      argv = suggestion.split(':').slice(1);
+      // the command is just the word "help"
+      suggestion = 'help';
+    }
+    if (opts.id === 'help') {
+      return this.config.runCommand('--help');
+    }
+    return this.config.runCommand(suggestion, argv);
+  }
+
+  this.error(`Run ${chalk.bold.cyan(binHelp)} for a list of available commands.`, {exit: 127});
 };
 
 export default hook;