diff --git a/packages/typescript-estree/src/parseSettings/inferSingleRun.ts b/packages/typescript-estree/src/parseSettings/inferSingleRun.ts
index 8007e6ccd66..a2a59b585f3 100644
--- a/packages/typescript-estree/src/parseSettings/inferSingleRun.ts
+++ b/packages/typescript-estree/src/parseSettings/inferSingleRun.ts
@@ -18,13 +18,13 @@ export function inferSingleRun(options: TSESTreeOptions | undefined): boolean {
// https://github.com/typescript-eslint/typescript-eslint/issues/9504
// There's no support (yet?) for extraFileExtensions in single-run hosts.
// Only watch program hosts and project service can support that.
- if (options?.extraFileExtensions?.length) {
+ if (options?.extraFileExtensions?.length && !options.projectService) {
return false;
}
if (
// single-run implies type-aware linting - no projects means we can't be in single-run mode
- options?.project == null ||
+ (options?.project == null && !options?.projectService) ||
// programs passed via options means the user should be managing the programs, so we shouldn't
// be creating our own single-run programs accidentally
options.programs != null
diff --git a/packages/typescript-estree/tests/lib/inferSingleRun.test.ts b/packages/typescript-estree/tests/lib/inferSingleRun.test.ts
index 2fe53da8907..d91cb4ed04c 100644
--- a/packages/typescript-estree/tests/lib/inferSingleRun.test.ts
+++ b/packages/typescript-estree/tests/lib/inferSingleRun.test.ts
@@ -143,6 +143,17 @@ describe(inferSingleRun, () => {
expect(actual).toBe(false);
});
+ it('returns true when singleRun can be inferred options.extraFileExtensions contains entires with projectService', () => {
+ vi.stubEnv('CI', 'true');
+
+ const actual = inferSingleRun({
+ extraFileExtensions: ['.vue'],
+ projectService: true,
+ });
+
+ expect(actual).toBe(true);
+ });
+
it('returns false when there is no way to infer singleRun', () => {
const actual = inferSingleRun({
programs: null,
@@ -157,4 +168,11 @@ describe(inferSingleRun, () => {
expect(actual).toBe(false);
});
+
+ it('returns true for project service in single run', () => {
+ vi.stubEnv('CI', 'true');
+ const actual = inferSingleRun({ projectService: true });
+
+ expect(actual).toBe(true);
+ });
});
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