Improve CLI output

Author: axelrindle

packages/cli/package.json

@@ -8,22 +8,13 @@
     "devDependencies": {
         "@sindresorhus/tsconfig": "^3.0.1",
         "@types/node": "^18.8.0",
-        "ava": "^4.3.3",
-        "nyc": "^15.1.0",
         "pkg": "^5.8.0",
-        "ts-node": "^10.9.1",
+        "tsx": "^3.9.0",
         "typescript": "^4.8.4"
     },
     "dependencies": {
         "github-version-checker": "*",
+        "pretty-error": "^4.0.0",
         "sade": "^1.8.1"
-    },
-    "ava": {
-        "extensions": [
-            "ts"
-        ],
-        "require": [
-            "ts-node/register/transpile-only"
-        ]
     }
 }

packages/cli/src/action.ts

@@ -1,5 +1,6 @@
 import versionCheck from 'github-version-checker'
-import { CliArguments } from './types'
+import PrettyError from 'pretty-error'
+import { CliArguments, JsonOutput } from './types'
 import { print, printError } from './util'
 
 function printPretty(result: any, args: CliArguments) {
@@ -11,11 +12,6 @@ function printPretty(result: any, args: CliArguments) {
     }
 }
 
-function printJson(result: any) {
-    const json = JSON.stringify(result)
-    print(json, false)
-}
-
 export default async function action(args: CliArguments) {
     try {
         const result = await versionCheck({
@@ -28,12 +24,21 @@ export default async function action(args: CliArguments) {
         })
 
         if (args.json) {
-            printJson(result)
+            const output: JsonOutput = {
+                type: result === undefined ? 'notfound' : 'outdated',
+                data: result
+            }
+            print(JSON.stringify(output), false)
         }
         else {
             printPretty(result, args)
         }
     } catch (error: any) {
-        printError(error.message)
+        if (args.verbose) {
+            printError(new PrettyError().render(error))
+        }
+        else {
+            printError(error.message)
+        }
     }
 }

packages/cli/src/index.ts

@@ -12,6 +12,7 @@ program
     .option('--no-pre-releases', 'Excludes pre-releases.', false)
     .option('--token', 'A PAT to use.')
     .option('--json', 'Outputs the raw result data as JSON.', false)
+    .option('--verbose', 'Enables verbose logging.', false)
     .action(action)
 
 program.parse(process.argv)

packages/cli/src/types.ts

@@ -6,4 +6,5 @@ export interface CliArguments {
     'no-pre-releases': boolean
     token?: string
     json: boolean
+    verbose: boolean
 }

packages/cli/src/util.ts

@@ -10,5 +10,5 @@ export function print(data: any, newline = true) {
 }
 
 export function printError(data: any, newline = true) {
-    write(process.stderr, data, newline)
+    write(process.stdout, data, newline)
 }