Use ansi-escapes to clear two lines.

Author: cpojer

packages/jest-cli/package.json

@@ -4,6 +4,7 @@
   "version": "15.0.2",
   "main": "build/jest.js",
   "dependencies": {
+    "ansi-escapes": "^1.4.0",
     "callsites": "^2.0.0",
     "chalk": "^1.1.1",
     "graceful-fs": "^4.1.6",

packages/jest-cli/src/jest.js

@@ -24,6 +24,7 @@ const TestRunner = require('./TestRunner');
 
 const {Console, clearLine} = require('jest-util');
 const {run} = require('./cli');
+const ansiEscapes = require('ansi-escapes');
 const chalk = require('chalk');
 const formatTestResults = require('./lib/formatTestResults');
 const os = require('os');
@@ -309,7 +310,7 @@ const runCLI = (
                 break;
               case KEYS.ESCAPE:
                 isEnteringPattern = false;
-                clearLine(pipe);
+                pipe.write(ansiEscapes.eraseLines(2));
                 currentPattern = argv._[0];
                 break;
               default: