diff --git a/jest/helpers.ts b/jest/helpers.ts
index 20f1ed003..3b19322b3 100644
--- a/jest/helpers.ts
+++ b/jest/helpers.ts
@@ -5,7 +5,6 @@ import {createDirectory} from 'jest-util';
 import execa from 'execa';
 import chalk from 'chalk';
 import slash from 'slash';
-import {Writable} from 'readable-stream';
 
 const CLI_PATH = path.resolve(__dirname, '../packages/cli/build/bin.js');
 
@@ -32,38 +31,6 @@ export function runCLI(
   });
 }
 
-// Runs cli until a given output is achieved, then kills it with `SIGTERM`
-export async function runUntil(
-  dir: string,
-  args: string[] | undefined,
-  text: string,
-  options: RunOptions = {
-    expectedFailure: false,
-  },
-) {
-  const spawnPromise = spawnScriptAsync(dir, args || [], {
-    timeout: 30000,
-    cwd: dir,
-    ...options,
-  });
-
-  spawnPromise.stderr?.pipe(
-    new Writable({
-      write(chunk: any, _encoding: string, callback: () => void) {
-        const output = chunk.toString('utf8');
-
-        if (output.includes(text)) {
-          spawnPromise.kill();
-        }
-
-        callback();
-      },
-    }),
-  );
-
-  return spawnPromise;
-}
-
 export const makeTemplate =
   (str: string): ((values?: Array<any>) => string) =>
   (values?: Array<any>) =>
@@ -133,7 +100,7 @@ type SpawnFunction<T> = (
   options: SpawnOptions,
 ) => T;
 
-export const spawnScript: SpawnFunction<execa.ExecaReturns> = (
+export const spawnScript: SpawnFunction<execa.ExecaReturnBase<string>> = (
   execPath,
   args,
   options,
@@ -145,19 +112,6 @@ export const spawnScript: SpawnFunction<execa.ExecaReturns> = (
   return result;
 };
 
-const spawnScriptAsync: SpawnFunction<execa.ExecaChildProcess> = (
-  execPath,
-  args,
-  options,
-) => {
-  try {
-    return execa(execPath, args, getExecaOptions(options));
-  } catch (result) {
-    handleTestFailure(execPath, options, result, args);
-    return result;
-  }
-};
-
 function getExecaOptions(options: SpawnOptions) {
   const isRelative = !path.isAbsolute(options.cwd);
 
diff --git a/package.json b/package.json
index dbd444a65..2f9361d00 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,6 @@
     "@types/jest": "^26.0.15",
     "@types/node": "^18.0.0",
     "@types/node-fetch": "^2.3.7",
-    "@types/readable-stream": "^2.3.0",
     "babel-jest": "^26.6.2",
     "babel-plugin-module-resolver": "^3.2.0",
     "chalk": "^4.1.2",
diff --git a/yarn.lock b/yarn.lock
index d9e04afe6..5753abce1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2392,14 +2392,6 @@
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.3.tgz#7ee330ba7caafb98090bece86a5ee44115904c2c"
   integrity sha512-ewFXqrQHlFsgc09MK5jP5iR7vumV/BYayNC6PgJO2LPe8vrnNFyjQjSppfEngITi0qvfKtzFvgKymGheFM9UOA==
 
-"@types/readable-stream@^2.3.0":
-  version "2.3.15"
-  resolved "https://registry.yarnpkg.com/@types/readable-stream/-/readable-stream-2.3.15.tgz#3d79c9ceb1b6a57d5f6e6976f489b9b5384321ae"
-  integrity sha512-oM5JSKQCcICF1wvGgmecmHldZ48OZamtMxcGGVICOJA8o8cahXC1zEVAif8iwoc5j8etxFaRFnf095+CDsuoFQ==
-  dependencies:
-    "@types/node" "*"
-    safe-buffer "~5.1.1"
-
 "@types/semver@^6.0.2":
   version "6.2.1"
   resolved "https://registry.yarnpkg.com/@types/semver/-/semver-6.2.1.tgz#a236185670a7860f1597cf73bea2e16d001461ba"