use execa

lib/scripts/test-external.js

@@ -2,7 +2,7 @@
 /* eslint-disable no-console, node/no-extraneous-require, node/no-unpublished-require */
 const fs = require('fs');
 const path = require('path');
-const { execSync } = require('child_process');
+const { shellSync } = require('execa');
 // apparently violates no-extraneous require? /shrug
 const debug = require('debug')('test-external');
 const rimraf = require('rimraf');
@@ -24,15 +24,15 @@ if (!gitUrl) {
 }
 
 console.log(
-  `Testing external project ${externalProjectName} located at ${gitUrl} against this ember-data commit.`
+  `Preparing to test external project ${externalProjectName} located at ${gitUrl} against this ember-data commit.`
 );
 
 function execWithLog(command, force) {
   if (debug.enabled || force) {
-    return execSync(command, { stdio: [0, 1, 2] });
+    return shellSync(command, { stdio: [0, 1, 2] });
   }
 
-  return execSync(command);
+  return shellSync(command);
 }
 
 if (!fs.existsSync(tempDir)) {
@@ -98,10 +98,7 @@ try {
 
 try {
   debug('Re-running tests against EmberData commit');
-  execWithLog(
-    `cd ../__external-test-cache/${externalProjectName} && ember test`,
-    true
-  );
+  execWithLog(`cd ../__external-test-cache/${externalProjectName} && ember test`, true);
 } catch (e) {
   commitTestPassed = false;
 }

package.json

@@ -99,6 +99,7 @@
     "eslint-config-prettier": "^2.9.0",
     "eslint-plugin-node": "^7.0.1",
     "eslint-plugin-prettier": "2.6.2",
+    "execa": "^0.10.0",
     "fs-extra": "^7.0.0",
     "github": "^1.1.1",
     "glob": "^7.1.2",

yarn.lock

@@ -3157,7 +3157,7 @@ exec-sh@^0.2.0:
 
 execa@^0.10.0:
   version "0.10.0"
-  resolved "https://registry.yarnpkg.com/execa/-/execa-0.10.0.tgz#ff456a8f53f90f8eccc71a96d11bdfc7f082cb50"
+  resolved "https://registry.npmjs.org/execa/-/execa-0.10.0.tgz#ff456a8f53f90f8eccc71a96d11bdfc7f082cb50"
   dependencies:
     cross-spawn "^6.0.0"
     get-stream "^3.0.0"