fix: clear full screen only in watch mode

packages/vitest/src/node/logger.ts

@@ -35,6 +35,15 @@ export class Logger {
     this.console.warn(...args)
   }
 
+  clearFullScreen(message: string) {
+    if (this.ctx.server.config.clearScreen === false) {
+      this.console.log(message)
+      return
+    }
+
+    this.console.log(`\x1Bc${message}`)
+  }
+
   clearScreen(message: string, force = false) {
     if (this.ctx.server.config.clearScreen === false) {
       this.console.log(message)
@@ -52,7 +61,9 @@ export class Logger {
 
     const log = this._clearScreenPending
     this._clearScreenPending = undefined
-    this.console.log(`\x1Bc${log}`)
+    // equivalent to ansi-escapes:
+    // stdout.write(ansiEscapes.cursorTo(0, 0) + ansiEscapes.eraseDown + log)
+    this.console.log(`\u001B[1;1H\u001B[J${log}`)
   }
 
   printError(err: unknown, fullStack = false, type?: string) {
@@ -82,7 +93,7 @@ export class Logger {
   }
 
   printBanner() {
-    this.clearScreen('', true)
+    this.log()
 
     const versionTest = this.ctx.config.watch
       ? c.blue(`v${version}`)

packages/vitest/src/node/reporters/base.ts

@@ -154,13 +154,13 @@ export abstract class BaseReporter implements Reporter {
     const TRIGGER = trigger ? c.dim(` ${this.relative(trigger)}`) : ''
     if (files.length > 1) {
       // we need to figure out how to handle rerun all from stdin
-      this.ctx.logger.clearScreen(`\n${BADGE}${TRIGGER}\n`, true)
+      this.ctx.logger.clearFullScreen(`\n${BADGE}${TRIGGER}\n`)
       this._lastRunCount = 0
     }
     else if (files.length === 1) {
       const rerun = this._filesInWatchMode.get(files[0]) ?? 1
       this._lastRunCount = rerun
-      this.ctx.logger.clearScreen(`\n${BADGE}${TRIGGER} ${c.blue(`x${rerun}`)}\n`)
+      this.ctx.logger.clearFullScreen(`\n${BADGE}${TRIGGER} ${c.blue(`x${rerun}`)}\n`)
     }
 
     this._timeStart = new Date()