feat: improve jiti/native compatibility with node and deno

.github/workflows/ci.yml

@@ -4,11 +4,9 @@ on:
   push:
     branches:
       - main
-      - v1
   pull_request:
     branches:
       - main
-      - v1
 
 permissions:
   id-token: write
@@ -20,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        node: [18, 20]
+        node: [18, 20, 22]
       fail-fast: false
 
     steps:
@@ -33,18 +31,24 @@ jobs:
           node-version: ${{ matrix.node }}
           cache: "pnpm"
       - uses: oven-sh/setup-bun@v2
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 20 }}
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 22 }}
         with:
           bun-version: latest
+      - uses: denoland/setup-deno@v1
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 22 }}
+        with:
+          deno-version: v1.x
       - run: pnpm install
       - run: pnpm lint
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 20 }}
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 22 }}
       - run: pnpm build
       - run: pnpm vitest run --coverage
-      - run: pnpm test:register
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 20 }}
+      - run: pnpm test:node-register
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 22 }}
       - run: pnpm test:bun --coverage
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 20 }}
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 22 }}
+      - run: pnpm test:native
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.node == 22 }}
       - name: nightly release
         if: |
           github.event_name == 'push' &&

.gitignore

@@ -4,3 +4,4 @@ dist
 *.log*
 coverage
 .tmp
+deno.lock

README.md

@@ -199,6 +199,10 @@ List of modules (within `node_modules`) to always use native require for them.
 
 List of modules (within `node_modules`) to transform them regardless of syntax.
 
+### `importMeta`
+
+Parent module's [`import.meta`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/import.meta) context to use for ESM resolution.
+
 ### `experimentalBun`
 
 - Type: Boolean

lib/jiti-native.mjs

@@ -3,15 +3,15 @@
  * @typedef {import('./types').JitiOptions} JitiOptions
  */
 
+const isDeno = "Deno" in globalThis;
+
 /**
- * @param {string} parentURL
- * @param {JitiOptions} [_opts]
+ * @param {string|URL} [parentURL]
+ * @param {JitiOptions} [jitiOptions]
  * @returns {Jiti}
  */
-export function createJiti(parentURL = "./_.js", _opts) {
-  if (isDir(parentURL)) {
-    parentURL += "/_.js";
-  }
+export function createJiti(parentURL, jitiOptions) {
+  parentURL = normalizeParentURL(parentURL);
 
   /** @type {Jiti} */
   function jiti() {
@@ -26,7 +26,13 @@ export function createJiti(parentURL = "./_.js", _opts) {
 
   jiti.esmResolve = (id, opts) => {
     try {
-      return import.meta.resolve(id, opts?.parentURL || parentURL);
+      const importMeta = jitiOptions?.importMeta || import.meta;
+      if (isDeno) {
+        // Deno throws TypeError: Invalid arguments when passing parentURL
+        return importMeta.resolve(id);
+      }
+      const parent = normalizeParentURL(opts?.parentURL || parentURL);
+      return importMeta.resolve(id, parent);
     } catch (error) {
       if (opts?.try) {
         return undefined;
@@ -37,15 +43,38 @@ export function createJiti(parentURL = "./_.js", _opts) {
   };
 
   jiti.import = async function (id, opts) {
-    const resolved = await this.esmResolve(id, opts);
-    if (!resolved) {
-      if (opts?.try) {
-        return undefined;
-      } else {
-        throw new Error(`Cannot resolve module '${id}'`);
+    for (const suffix of ["", "/index"]) {
+      // prettier-ignore
+      for (const ext of ["", ".js", ".mjs", ".cjs", ".ts", ".tsx", ".mts", ".cts"]) {
+        try {
+          const resolved = this.esmResolve(id + suffix + ext, opts);
+          if (!resolved) {
+            continue;
+          }
+          let importAttrs = undefined
+          if (resolved.endsWith('.json')) {
+            importAttrs = { with: { type: 'json'}}
+          }
+          return await import(resolved, importAttrs);
+        } catch (error) {
+          if (error.code === 'ERR_MODULE_NOT_FOUND' || error.code === 'ERR_UNSUPPORTED_DIR_IMPORT') {
+            continue
+          }
+          if (opts?.try) {
+            return undefined;
+          }
+          throw error;
+        }
       }
     }
-    return import(resolved);
+    if (!opts?.try) {
+      const parent = normalizeParentURL(opts?.parentURL || parentURL);
+      const error = new Error(
+        `[jiti] [ERR_MODULE_NOT_FOUND] Cannot import '${id}' from '${parent}'.`,
+      );
+      error.code = "ERR_MODULE_NOT_FOUND";
+      throw error;
+    }
   };
 
   jiti.transform = () => {
@@ -78,12 +107,15 @@ function unsupportedError(message) {
   );
 }
 
-function isDir(filename) {
-  if (filename instanceof URL || filename.startsWith("file://")) {
-    return false;
+function normalizeParentURL(input) {
+  if (!input) {
+    return "file:///";
+  }
+  if (input instanceof URL || input.startsWith("file://")) {
+    return input;
   }
-  if (filename.endsWith("/")) {
-    return true;
+  if (input.endsWith("/")) {
+    input += "_"; // append a dummy filename
   }
-  return !filename.split("/").pop().includes(".");
+  return `file://${input}`;
 }

lib/types.d.ts

@@ -131,6 +131,11 @@ export interface JitiOptions {
    */
   transformModules?: string[];
 
+  /**
+   * Parent module's import.meta context to use for ESM resolution.
+   */
+  importMeta?: ImportMeta;
+
   /**
    * Enable experimental native Bun support for transformations.
    */

package.json

@@ -41,15 +41,19 @@
     "build": "pnpm clean && NODE_ENV=production pnpm webpack",
     "clean": "rm -rf dist",
     "dev": "pnpm clean && pnpm webpack --watch",
-    "jiti": "JITI_DEBUG=1 ./lib/jiti-cli.mjs",
+    "jiti": "JITI_DEBUG=1 lib/jiti-cli.mjs",
     "lint": "eslint . && prettier -c src lib test stubs",
     "lint:fix": "eslint --fix . && prettier -w src lib test stubs",
     "prepack": "pnpm build",
     "release": "pnpm build && pnpm test && changelogen --release --prerelease --push --publish --publishTag 2x",
-    "test": "pnpm lint && pnpm test:types && vitest run --coverage && pnpm test:register && pnpm test:bun",
-    "test:types": "tsc --noEmit",
-    "test:register": "node ./test/register-test.mjs",
-    "test:bun": "bun --bun test test/bun"
+    "test": "pnpm lint && pnpm test:types && vitest run --coverage && pnpm test:node-register && pnpm test:bun && pnpm test:native",
+    "test:bun": "bun --bun test test/bun",
+    "test:native": "pnpm test:native:bun && pnpm test:native:node && pnpm test:native:deno",
+    "test:native:bun": "bun --bun test test/native/bun.test.ts",
+    "test:native:deno": "deno test -A test/native/deno.test.ts",
+    "test:native:node": "node --test --experimental-strip-types test/native/node.test.ts",
+    "test:node-register": "node --test test/node-register.test.mjs",
+    "test:types": "tsc --noEmit"
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",

test/native/bun.test.ts

@@ -0,0 +1,21 @@
+import { readdir } from "node:fs/promises";
+// @ts-ignore
+import { test } from "bun:test";
+
+import { createJiti } from "../../lib/jiti-native.mjs";
+
+const fixtures = await readdir(new URL("../fixtures", import.meta.url));
+
+const jiti = createJiti(import.meta.url, { importMeta: import.meta });
+
+const ignore = new Set(["error-runtime", "error-parse", "typescript"]);
+
+for (const fixture of fixtures) {
+  if (ignore.has(fixture)) {
+    continue;
+  }
+
+  test("fixtures/" + fixture + " (ESM) (Native)", async () => {
+    await jiti.import("../fixtures/" + fixture);
+  });
+}

test/native/deno.test.ts

@@ -0,0 +1,36 @@
+import { readdir } from "node:fs/promises";
+import { test } from "node:test";
+
+import { createJiti } from "../../lib/jiti-native.mjs";
+
+const fixtures = await readdir(new URL("../fixtures", import.meta.url));
+
+const jiti = createJiti(import.meta.url, { importMeta: import.meta });
+
+// Mostly broken because default type is set to commonjs in fixtures root
+const ignore = new Set(
+  [
+    "error-runtime",
+    "error-parse",
+    "pure-esm-dep",
+    "proto",
+    "json",
+    "esm",
+    "env",
+    "typescript",
+    "top-level-await",
+    "exotic",
+    "circular",
+    "import-map",
+  ].filter(Boolean),
+);
+
+for (const fixture of fixtures) {
+  if (ignore.has(fixture)) {
+    continue;
+  }
+
+  test("fixtures/" + fixture + " (ESM) (Native)", async () => {
+    await jiti.import("../fixtures/" + fixture);
+  });
+}

test/native/node.test.ts

@@ -0,0 +1,35 @@
+import { readdir } from "node:fs/promises";
+import { test } from "node:test";
+
+import { createJiti } from "../../lib/jiti-native.mjs";
+
+const fixtures = await readdir(new URL("../fixtures", import.meta.url));
+
+const jiti = createJiti(import.meta.url, { importMeta: import.meta });
+
+// Mostly broken because default type is set to commonjs in fixtures root
+const ignore = new Set(
+  [
+    "error-runtime",
+    "error-parse",
+    "pure-esm-dep",
+    "proto",
+    "json",
+    "esm",
+    "env",
+    "typescript",
+    "top-level-await",
+    "exotic",
+    "circular",
+  ].filter(Boolean),
+);
+
+for (const fixture of fixtures) {
+  if (ignore.has(fixture)) {
+    continue;
+  }
+
+  test("fixtures/" + fixture + " (ESM) (Native)", async () => {
+    await jiti.import("../fixtures/" + fixture);
+  });
+}

vitest.config.ts

@@ -2,10 +2,6 @@ import { defineConfig } from "vitest/config";
 
 export default defineConfig({
   test: {
-    exclude: [
-      "**/test.{ts,mjs,cjs,js}",
-      "node_modules/**/*",
-      "test/bun*.test.ts",
-    ],
+    include: ["test/fixturtes.test.ts", "test/utils.test.ts"],
   },
 });