Merge branch 'static-ci' of https://github.com/Mist3rBru/clack into static-ci

Author: orochaa

packages/prompts/package.json

@@ -54,6 +54,7 @@
   },
   "dependencies": {
     "@clack/core": "workspace:*",
+    "ci-info": "^3.8.0",
     "picocolors": "^1.0.0",
     "sisteransi": "^1.0.5"
   },

packages/prompts/src/index.ts

@@ -8,8 +8,9 @@ import {
 	SelectKeyPrompt,
 	SelectPrompt,
 	State,
-	TextPrompt
+	TextPrompt,
 } from '@clack/core';
+import { isCI } from 'ci-info';
 import isUnicodeSupported from 'is-unicode-supported';
 import color from 'picocolors';
 import { cursor, erase } from 'sisteransi';
@@ -637,7 +638,6 @@ export const log = {
 export const spinner = () => {
 	const frames = unicode ? ['◒', '◐', '◓', '◑'] : ['•', 'o', 'O', '0'];
 	const delay = unicode ? 80 : 120;
-	const isCI = process.env.GITHUB_ACTIONS === 'true';
 
 	let unblock: () => void;
 	let loop: NodeJS.Timeout;
@@ -673,7 +673,7 @@ export const spinner = () => {
 	};
 
 	const clearPrevMessage = () => {
-		if (!_prevMessage) return;
+		if (_prevMessage === undefined) return;
 		if (isCI) process.stdout.write('\n');
 		const prevLines = _prevMessage.split('\n');
 		process.stdout.write(cursor.move(-999, prevLines.length - 1));