feat(unstable): initial support for npm specifiers (#15484)

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

1 files changed, 123 insertions, 0 deletions

diff --git a/cli/tests/integration/npm_tests.rs b/cli/tests/integration/npm_tests.rs
new file mode 100644
index 000000000..fa5f3979a
--- /dev/null
+++ b/cli/tests/integration/npm_tests.rs
@@ -0,0 +1,123 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::url::Url;
+use test_util as util;
+
+// NOTE: It's possible to automatically update the npm registry data in the test server
+// by setting the DENO_TEST_UTIL_UPDATE_NPM=1 environment variable.
+
+itest!(esm_module {
+  args: "run --allow-read npm/esm/main.js",
+  output: "npm/esm/main.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+itest!(esm_module_eval {
+  args_vec: vec![
+    "eval",
+    "import chalk from 'npm:chalk@5'; console.log(chalk.green('chalk esm loads'));",
+  ],
+  output: "npm/esm/main.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+itest!(esm_module_deno_test {
+  args: "test --allow-read npm/esm/test.js",
+  output: "npm/esm/test.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+itest!(cjs_with_deps {
+  args: "run --allow-read --unstable npm/cjs_with_deps/main.js",
+  output: "npm/cjs_with_deps/main.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+itest!(cjs_sub_path {
+  args: "run --allow-read --unstable npm/cjs_sub_path/main.js",
+  output: "npm/cjs_sub_path/main.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+itest!(dynamic_import {
+  args: "run --allow-read --unstable npm/dynamic_import/main.ts",
+  output: "npm/dynamic_import/main.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+itest!(import_map {
+  args: "run --allow-read --unstable --import-map npm/import_map/import_map.json npm/import_map/main.js",
+  output: "npm/import_map/main.out",
+  envs: env_vars(),
+  http_server: true,
+});
+
+#[test]
+fn parallel_downloading() {
+  let (out, _err) = util::run_and_collect_output_with_args(
+    true,
+    vec![
+      "run",
+      "--allow-read",
+      "--unstable",
+      "npm/cjs_with_deps/main.js",
+    ],
+    None,
+    // don't use the sync env var
+    Some(env_vars_no_sync_download()),
+    true,
+  );
+  assert!(out.contains("chalk cjs loads"));
+}
+
+#[test]
+fn ensure_registry_files_local() {
+  // ensures the registry files all point at local tarballs
+  let registry_dir_path = util::testdata_path().join("npm").join("registry");
+  for entry in std::fs::read_dir(&registry_dir_path).unwrap() {
+    let entry = entry.unwrap();
+    if entry.metadata().unwrap().is_dir() {
+      let registry_json_path = registry_dir_path
+        .join(entry.file_name())
+        .join("registry.json");
+      let file_text = std::fs::read_to_string(&registry_json_path).unwrap();
+      if file_text.contains("https://registry.npmjs.org/") {
+        panic!(
+          "file {} contained a reference to the npm registry",
+          registry_json_path.display(),
+        );
+      }
+    }
+  }
+}
+
+fn std_file_url() -> String {
+  let u = Url::from_directory_path(util::std_path()).unwrap();
+  u.to_string()
+}
+
+fn env_vars_no_sync_download() -> Vec<(String, String)> {
+  vec![
+    ("DENO_NODE_COMPAT_URL".to_string(), std_file_url()),
+    (
+      "DENO_NPM_REGISTRY".to_string(),
+      "http://localhost:4545/npm/registry/".to_string(),
+    ),
+  ]
+}
+
+fn env_vars() -> Vec<(String, String)> {
+  let mut env_vars = env_vars_no_sync_download();
+  env_vars.push((
+    // make downloads determinstic
+    "DENO_UNSTABLE_NPM_SYNC_DOWNLOAD".to_string(),
+    "1".to_string(),
+  ));
+  env_vars
+}