feat(unstable): Support data: urls (#5157)

cli/tests/data_import_invalid.js

@@ -0,0 +1 @@
+import _invalid from "data:";

cli/tests/data_import_invalid.out

@@ -0,0 +1,2 @@
+error: Malformed data url, missing comma
+Imported from [WILDCARD]

cli/tests/data_import_origin_upgrade.js

@@ -0,0 +1,2 @@
+// export default from "https://deno.land/std/version.ts";
+import _upgrade from "data:application/javascript;base64,ZXhwb3J0IGRlZmF1bHQgZnJvbSAiaHR0cHM6Ly9kZW5vLmxhbmQvc3RkL3ZlcnNpb24udHMiOw==";

cli/tests/data_import_origin_upgrade.out

@@ -0,0 +1,2 @@
+error: Modules loaded using data URL are not allowed to import other modules
+Imported from [WILDCARD]

cli/tests/data_import_test.js

@@ -0,0 +1,59 @@
+import { assertEquals } from "../../std/testing/asserts.ts";
+
+// export const value = 'Successful import'; export default value;
+import data1 from "data:application/javascript;base64,ZXhwb3J0IGNvbnN0IHZhbHVlID0gJ1N1Y2Nlc3NmdWwgaW1wb3J0JzsgZXhwb3J0IGRlZmF1bHQgdmFsdWU7";
+
+Deno.test("static base64 data url import", () => {
+  assertEquals(data1, "Successful import");
+});
+
+Deno.test("dynamic base64 data url import", async () => {
+  const data2 = await import(
+    // export const leet = 1337
+    "data:application/javascript;base64,ZXhwb3J0IGNvbnN0IGxlZXQgPSAxMzM3"
+  );
+  assertEquals(data2.leet, 1337);
+});
+
+Deno.test("dynamic percent-encoding data url import", async () => {
+  const data3 = await import(
+    // export const value = 42;
+    "data:application/javascript,export%20const%20value%20%3D%2042%3B"
+  );
+  assertEquals(data3.value, 42);
+});
+
+Deno.test("dynamic base64 typescript data url import", async () => {
+  const data2 = await import(
+    // export const leet: number = 1337;
+    "data:application/typescript;base64,ZXhwb3J0IGNvbnN0IGxlZXQ6IG51bWJlciA9IDEzMzc7"
+  );
+  assertEquals(data2.leet, 1337);
+});
+
+Deno.test("spawn worker with data url", async () => {
+  let resolve, timeout;
+  const promise = new Promise((res, rej) => {
+    resolve = res;
+    timeout = setTimeout(() => rej("Worker timed out"), 2000);
+  });
+
+  const worker = new Worker(
+    "data:application/javascript," +
+      encodeURIComponent("self.onmessage = () => self.postMessage('Worker');"),
+    { type: "module" },
+  );
+
+  worker.onmessage = (m) => {
+    if (m.data === "Worker") {
+      resolve();
+    }
+  };
+
+  worker.postMessage();
+
+  await promise;
+
+  clearTimeout(timeout);
+  worker.terminate();
+});

cli/tests/data_import_test.out

@@ -0,0 +1,3 @@
+[WILDCARD]
+test result: ok. 5 passed; [WILDCARD]
+

cli/tests/integration_tests.rs

@@ -2394,6 +2394,23 @@ itest!(info_type_import {
   output: "info_type_import.out",
 });
 
+itest!(data_import {
+  args: "test --reload --unstable data_import_test.js",
+  output: "data_import_test.out",
+});
+
+itest!(data_import_invalid {
+  args: "test --reload --unstable data_import_invalid.js",
+  output: "data_import_invalid.out",
+  exit_code: 1,
+});
+
+itest!(data_import_origin_upgrade {
+  args: "test --reload --unstable data_import_origin_upgrade.js",
+  output: "data_import_origin_upgrade.out",
+  exit_code: 1,
+});
+
 #[test]
 fn cafile_env_fetch() {
   use url::Url;

cli/tests/unsupported_dynamic_import_scheme.out

@@ -2,4 +2,5 @@ error: Uncaught TypeError: Unsupported scheme "xxx" for module "xxx:". Supported
     "http",
     "https",
     "file",
+    "data",
 ]