chore: import upstream snapshot with attribution

scripts/copy-built-package/progress.ts

@@ -0,0 +1,88 @@
+import { centerStringInWidth } from './ui';
+
+function getProgressBar(current: number, total: number, width = 40): string {
+  const percentage = total > 0 ? current / total : 0;
+  const filled = Math.round(width * percentage);
+  const empty = width - filled;
+  return '█'.repeat(filled) + '░'.repeat(empty);
+}
+
+function truncateStart(str: string, maxLen: number): string {
+  if (str.length <= maxLen) return str;
+  return '...' + str.slice(-(maxLen - 3));
+}
+
+export class ProgressDisplay {
+  private current = 0;
+  private total: number;
+  private lastFile = '';
+  private initialized: boolean = false;
+
+  constructor(total: number) {
+    this.total = total;
+  }
+
+  insertBefore(str: string) {
+    process.stdout.write('\x1b[J');
+    console.log(str);
+  }
+
+  row(maxWidth: number, minGap: number, ...parts: string[]): string {
+    const totalPartsLength = parts.reduce((sum, part) => sum + part.length, 0);
+    const calculatedGap = (maxWidth - totalPartsLength) / (parts.length - 1);
+    if (calculatedGap < minGap) {
+      const neededReduction = (minGap - calculatedGap) * (parts.length - 1);
+      parts[0] = truncateStart(parts[0], parts[0].length - neededReduction);
+    }
+    return parts.join(' '.repeat(Math.max(calculatedGap, minGap)));
+  }
+
+  update(file: string, message?: string): void {
+    this.current++;
+    this.lastFile = file;
+
+    // Move cursor up 3 lines and clear each line
+    if (this.initialized) {
+      process.stdout.write('\x1b[2F');
+    } else {
+      this.initialized = true;
+    }
+
+    if (message) {
+      this.insertBefore(message);
+    }
+    this.renderCurrentStatus();
+  }
+
+  private renderCurrentStatus() {
+    const termWidth = process.stdout.columns || 80;
+    const adjustedTermWidth = termWidth - Math.floor(0.2 * termWidth);
+    const progressBar = getProgressBar(
+      this.current,
+      this.total,
+      adjustedTermWidth
+    );
+
+    // Line 1: Most recently copied file
+    process.stdout.write(
+      centerStringInWidth(
+        this.row(
+          adjustedTermWidth,
+          4,
+          this.lastFile,
+          `[${this.current} / ${this.total}]`
+        ),
+        termWidth
+      ) + '\x1b[K\n'
+    );
+    // Line 2: Progress bar
+    process.stdout.write(
+      centerStringInWidth(progressBar, termWidth) + '\x1b[K\n'
+    );
+  }
+
+  finish(): void {
+    // Add a newline after completion to separate from next output
+    process.stdout.write('\n');
+  }
+}