diff --git a/packages/types/tools/copy-ast-spec.ts b/packages/types/tools/copy-ast-spec.ts
index 8b7848d9a71..7e4eff420c9 100644
--- a/packages/types/tools/copy-ast-spec.ts
+++ b/packages/types/tools/copy-ast-spec.ts
@@ -15,6 +15,7 @@ async function execAsync(
   return new Promise((resolve, reject) => {
     const child = childProcess.spawn(command, args, {
       ...options,
+      shell: process.platform === 'win32',
       stdio: 'inherit',
     });
 
diff --git a/packages/typescript-estree/tests/ast-alignment/fixtures-to-test.ts b/packages/typescript-estree/tests/ast-alignment/fixtures-to-test.ts
index 5c3900f5ba8..5f44161557c 100644
--- a/packages/typescript-estree/tests/ast-alignment/fixtures-to-test.ts
+++ b/packages/typescript-estree/tests/ast-alignment/fixtures-to-test.ts
@@ -92,7 +92,10 @@ class FixturesTester {
     return this.fixtures
       .map(fixture =>
         glob
-          .sync(`${fixture.directory}/${fixture.pattern}`, {})
+          .sync(fixture.pattern, {
+            cwd: fixture.directory,
+            absolute: true,
+          })
           .map(filename => ({
             filename,
             ignoreSourceType: fixture.ignoreSourceType,
@@ -346,7 +349,6 @@ tester.addFixturePatternConfig('typescript/basics', {
     /**
      * Not yet supported in Babel
      * Directive field is not added to module and namespace
-     * @see https://github.com/babel/babel/issues/9228
      */
     'directive-in-module',
     'directive-in-namespace',
diff --git a/packages/typescript-estree/tests/ast-fixtures.test.ts b/packages/typescript-estree/tests/ast-fixtures.test.ts
index f3ffbabd809..37a7e5cb71f 100644
--- a/packages/typescript-estree/tests/ast-fixtures.test.ts
+++ b/packages/typescript-estree/tests/ast-fixtures.test.ts
@@ -15,7 +15,7 @@ addSerializer(serializer);
 // prettier-ignore
 const ONLY = [].join(path.sep);
 
-const FIXTURES_DIR = path.resolve(
+const fixturesDir = path.resolve(
   __dirname,
   '..',
   '..',
@@ -25,15 +25,15 @@ const FIXTURES_DIR = path.resolve(
   'shared-fixtures',
   'fixtures',
 );
-const SNAPSHOTS_DIR = path.resolve(__dirname, 'snapshots');
+const snapshotsDir = path.resolve(__dirname, 'snapshots');
 
 const fixtures = glob
-  .sync(`${FIXTURES_DIR}/**/*.src.{js,ts,jsx,tsx}`)
+  .sync(`**/*.src.{js,ts,jsx,tsx}`, { cwd: fixturesDir, absolute: true })
   .map(absolute => {
-    const relative = path.relative(FIXTURES_DIR, absolute);
+    const relative = path.relative(fixturesDir, absolute);
     const { name, dir, ext } = path.parse(relative);
     const segments = dir.split(path.sep);
-    const snapshotPath = path.join(SNAPSHOTS_DIR, dir);
+    const snapshotPath = path.join(snapshotsDir, dir);
     return {
       absolute,
       isJsx: isJSXFileType(ext),
@@ -97,14 +97,16 @@ fixtures.forEach(f => nestDescribe(f));
 
 if (ONLY === '') {
   // ensure that the snapshots are cleaned up, because jest-specific-snapshot won't do this check
-  const snapshots = glob.sync(`${SNAPSHOTS_DIR}/**/*.shot`).map(absolute => {
-    const relative = path.relative(SNAPSHOTS_DIR, absolute);
-    const { name, dir } = path.parse(relative);
-    return {
-      relative,
-      fixturePath: path.join(FIXTURES_DIR, dir, name),
-    };
-  });
+  const snapshots = glob
+    .sync(`**/*.shot`, { cwd: snapshotsDir, absolute: true })
+    .map(absolute => {
+      const relative = path.relative(snapshotsDir, absolute);
+      const { name, dir } = path.parse(relative);
+      return {
+        relative,
+        fixturePath: path.join(fixturesDir, dir, name),
+      };
+    });
 
   describe('ast snapshots should have an associated test', () => {
     for (const snap of snapshots) {