Fix ANSI escape sequences offsetting cursor

lib/LocalEchoController.js

@@ -1,3 +1,4 @@
+import ansiRegex from "ansi-regex";
 import { HistoryController } from "./HistoryController";
 import {
   closestLeftBoundary,
@@ -234,7 +235,7 @@ export default class LocalEchoController {
    */
   applyPromptOffset(input, offset) {
     const newInput = this.applyPrompts(input.substr(0, offset));
-    return newInput.length;
+    return newInput.replace(ansiRegex(), "").length;
   }
 
   /**

lib/Utils.js

@@ -1,3 +1,4 @@
+import ansiRegex from "ansi-regex";
 import { parse } from "shell-quote";
 
 /**
@@ -65,7 +66,7 @@ export function offsetToColRow(input, offset, maxCols) {
  * Counts the lines in the given input
  */
 export function countLines(input, maxCols) {
-  return offsetToColRow(input, input.length, maxCols).row + 1;
+  return offsetToColRow(input, input.replace(ansiRegex(), "").length, maxCols).row + 1;
 }
 
 /**

package.json

@@ -42,6 +42,7 @@
     }
   },
   "dependencies": {
+    "ansi-regex": "^6.0.1",
     "shell-quote": "^1.6.1"
   }
 }