fix: add options to yargs along with examples (#27)

bin/github-default-branch

@@ -1,6 +1,23 @@
 #!/usr/bin/env node
 (async function () {
-  const { argv } = require("yargs");
+  const { argv } = require("yargs").options({
+    pat: {type: "string", description: "GitHub API Token"},
+    repo: {type: "string", description: "The repo to update (format: user/repo"},
+    user: {type: "string", description: "Update all repos owned by the provided user (example: my-user)"},
+    org: {type: "string", description: "Update all repos in the provided org (example: my-org-name)"},
+    keepOld: {type: "boolean", default: false, description: "Keep the old branch rather than deleting it"},
+    dryRun: {type: "boolean", default: false, description: "Output log messages only. Do not make any changes"},
+    listReposOnly: {type: "boolean", default: false, description: "List repos that would be affected, then exit"},
+    skipForks: {type: "boolean", default: false, description: "Skips forked repositories"},
+    old: {type: "string", default: "master", description: "The name of the branch to rename"},
+    new: {type: "string", default: "main", description: "The new branch name"},
+    confirm: {type: "boolean", default: false, description: "Run without prompting for confirmation"},
+  }).example([
+    ["$0 --pat <token> --repo user/repo", "Rename master to main"],
+    ["$0 --pat <token> --repo user/repo --old dev --new develop", "Rename dev to develop"],
+    ["$0 --pat <token> --org my-org-name", "Rename all repos owned by an org"],
+    ["$0 --pat <token> --user my-user", "Rename all repos owned by a user"],
+  ]);
 
   const isDryRun = !!argv.dryRun;
 

package.json

@@ -20,7 +20,7 @@
     "@octokit/rest": "^18.0.0",
     "prompt-confirm": "^2.0.4",
     "string.prototype.replaceall": "^1.0.3",
-    "yargs": "^15.3.1"
+    "yargs": "^15.4.0"
   },
   "bin": {
     "github-default-branch": "./bin/github-default-branch"