fix: use distinct cache paths for async mode

src/cache.ts

@@ -8,6 +8,7 @@ export function getCache(
   ctx: Context,
   filename: string | undefined,
   source: string,
+  async: boolean,
   get: () => string,
 ): string {
   if (!ctx.opts.cache || !filename) {
@@ -18,7 +19,11 @@ export function getCache(
   const sourceHash = ` /* v${ctx.opts.cacheVersion}-${md5(source, 16)} */`;
 
   // Check cache file
-  const filebase = basename(dirname(filename)) + "-" + basename(filename);
+  const filebase =
+    basename(dirname(filename)) +
+    "-" +
+    basename(filename) +
+    (async ? "-async" : "");
   const cacheFile = join(
     ctx.opts.cache as string,
     filebase + "." + md5(filename) + ".js",

src/eval.ts

@@ -49,7 +49,7 @@ export function evalModule(
       filename,
       source,
       ts: isTypescript,
-      async: evalOptions.async,
+      async: evalOptions.async ?? false,
     });
     const time = Math.round((performance.now() - start) * 1000) / 1000;
     debug(
@@ -69,7 +69,12 @@ export function evalModule(
     } catch (error: any) {
       debug(ctx, "Native require error:", error);
       debug(ctx, "[fallback]", filename);
-      source = transform(ctx, { filename, source, ts: isTypescript });
+      source = transform(ctx, {
+        filename,
+        source,
+        ts: isTypescript,
+        async: evalOptions.async ?? false,
+      });
     }
   }
 

src/jiti.ts

@@ -125,6 +125,7 @@ export default function createJITI(
               source,
               filename,
               ts: !!/\.[cm]?ts$/.test(filename),
+              async: false,
             }),
           { exts: ctx.opts.extensions },
         );

src/transform.ts

@@ -1,9 +1,9 @@
+import type { Context, TransformOptions } from "./types";
 import { getCache } from "./cache";
-import { Context } from "./types";
 import { debug } from "./utils";
 
-export function transform(ctx: Context, topts: any): string {
-  let code = getCache(ctx, topts.filename, topts.source, () => {
+export function transform(ctx: Context, topts: TransformOptions): string {
+  let code = getCache(ctx, topts.filename, topts.source, topts.async, () => {
     const res = ctx.opts.transform!({
       ...ctx.opts.transformOptions,
       babel: {

src/types.ts

@@ -5,7 +5,7 @@ export type EvalModuleOptions = Partial<{
   filename: string;
   ext: string;
   cache: ModuleCache;
-  async?: boolean;
+  async: boolean;
 }>;
 
 export interface JITI extends NodeRequire {
@@ -41,7 +41,7 @@ export type TransformOptions = {
   filename?: string;
   ts?: boolean;
   retainLines?: boolean;
-  async?: boolean;
+  async: boolean;
   [key: string]: any;
 };