Setup subcommands with yargs

src/cmds/cns-cmds/start.ts

@@ -0,0 +1,17 @@
+import yargs, { Arguments } from 'yargs';
+
+export const command = 'start';
+
+export const desc = 'Start local CNS.';
+
+exports.builder = {
+  'log-file': {
+    type: 'string'
+  }
+}
+
+exports.handler = function (argv: Arguments) {
+  const { logFile } = argv;
+
+  console.log('option logFile', logFile)
+}

src/cmds/cns.ts

@@ -0,0 +1,9 @@
+import yargs from 'yargs';
+
+export const command = 'cns';
+
+export const desc = 'CNS tools';
+
+exports.builder = (yargs: yargs.Argv) => {
+  return yargs.commandDir('cns-cmds')
+}