feat(main): initial cut

bin/agoric

@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+
+const path = require('path');
+
+esmRequire = require('esm')(module);
+const main = esmRequire('../lib/main.js').default;
+const progname = process.argv[1];
+
+process.on('SIGINT', () => process.exit(-1));
+
+main(path.basename(process.argv[1]), process.argv.splice(2)).then(
+  res => res === undefined || process.exit(res),
+  rej => {
+    console.error(`${progname}: error:`, rej);
+    process.exit(1);
+  },
+);

lib/main.js

@@ -0,0 +1,47 @@
+import chalk from 'chalk';
+import parseArgs from 'minimist';
+
+const VERSION = 'Agoric 0.1.0';
+
+const main = async (progname, rawArgs) => {
+  const { _: args, ...opts } = parseArgs(rawArgs, {
+    boolean: ['version', 'help'],
+    stopEarly: true,
+  });
+
+  const usage = status => {
+    if (status) {
+      console.error(`Type '${progname} --help' for more information.`);
+      return status;
+    }
+    console.log(`\
+Usage: ${progname} [command] [...args]
+
+help    display this help and exit
+`);
+    return 0;
+  };
+
+  if (opts.version) {
+    console.log(VERSION);
+    return 0;
+  }
+
+  if (opts.help) {
+    return usage(0);
+  }
+
+  const cmd = args[0];
+  switch (cmd) {
+    case undefined:
+      console.error(`${progname}: error: you must specify a COMMAND`);
+      return usage(1);
+    case 'help':
+      return usage(0);
+    default:
+      console.error(`${progname}: error: unrecognized COMMAND ${cmd}`);
+      return usage(1);
+  }
+};
+
+export default main;

package.json

@@ -24,7 +24,9 @@
     "tape-promise": "^4.0.0"
   },
   "dependencies": {
-    "esm": "^3.2.5"
+    "chalk": "^2.4.2",
+    "esm": "^3.2.5",
+    "minimist": "^1.2.0"
   },
   "keywords": [],
   "files": [