tests: Rename the Node tests to *.cjs.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

docs/subsystems/events-system.md

@@ -381,9 +381,9 @@ node test fixtures and our OpenAPI documentation.
 #### Node testing
 
 Once you've completed backend testing, be sure to add an example event
-in `web/tests/lib/events.js`, a test of the
+in `web/tests/lib/events.cjs`, a test of the
 `server_events_dispatch.js` code for that event in
-`web/tests/dispatch.test.js`, and verify your example
+`web/tests/dispatch.test.cjs`, and verify your example
 against the two versions of the schema that you declared above using
 `tools/check-schemas`.
 

docs/subsystems/markdown.md

@@ -41,7 +41,7 @@ message is sent). As a result, we try to make sure that
 The Python-Markdown implementation is tested by
 `zerver/tests/test_markdown.py`, and the marked.js implementation and
 `markdown.contains_backend_only_syntax` are tested by
-`web/tests/markdown.test.js`.
+`web/tests/markdown.test.cjs`.
 
 A shared set of fixed test data ("test fixtures") is present in
 `zerver/tests/fixtures/markdown_test_cases.json`, and is automatically used

docs/testing/testing-with-node.md

@@ -18,7 +18,7 @@ name when debugging something.
 
 The JS unit tests are written to work with node. You can find them
 in `web/tests`. Here is an example test from
-`web/tests/stream_data.test.js`:
+`web/tests/stream_data.test.cjs`:
 
 ```js
 (function test_get_by_id() {
@@ -45,7 +45,7 @@ there are, you should strive to follow the patterns of the existing tests
 and add your own tests.
 
 A good first test to read is
-[example1.js](https://github.com/zulip/zulip/blob/main/web/tests/example1.test.js).
+[example1.test.cjs](https://github.com/zulip/zulip/blob/main/web/tests/example1.test.cjs).
 (And then there are several other example files.)
 
 ## How the node tests work
@@ -60,10 +60,10 @@ those slow down the tests a lot, and often don't add much value.
 Instead, the preferred model for our unit tests is to mock DOM
 manipulations (which in Zulip are almost exclusively done via
 `jQuery`) using a custom library
-[zjquery](https://github.com/zulip/zulip/blob/main/web/tests/lib/zjquery.js).
+[zjquery](https://github.com/zulip/zulip/blob/main/web/tests/lib/zjquery.cjs).
 
 The
-[unit test file](https://github.com/zulip/zulip/blob/main/web/tests/zjquery.test.js)
+[unit test file](https://github.com/zulip/zulip/blob/main/web/tests/zjquery.test.cjs)
 for `zjquery` is designed to be also serve as nice documentation for
 how to use `zjquery`, and is **highly recommended reading** for anyone
 working on or debugging the Zulip node tests.
@@ -149,7 +149,7 @@ narrow_state.stream = function () {
 
 ## Creating new test modules
 
-The test runner (`index.js`) automatically runs all .js files in the
+The test runner (`index.cjs`) automatically runs all .test.cjs files in the
 `web/tests` directory, so you can simply start editing a file
 in that directory to create a new test.
 
@@ -278,7 +278,7 @@ These instructions assume you're using the Vagrant development environment.
       1. **Set the `Node.js interpreter path` to `/usr/local/bin/node`**
       1. Hit `OK` 2 times to get back to the `Run/Debug Configurations` window.
    1. Under `Working Directory` select the root `zulip` directory.
-   1. Under `JavaScript file`, enter `web/tests/lib/index.js`
+   1. Under `JavaScript file`, enter `web/tests/lib/index.cjs`
       -- this is the root script for Zulip's node unit tests.
 
 Congratulations! You've now set up the integration.
@@ -288,7 +288,7 @@ Congratulations! You've now set up the integration.
 To use Webstorm to debug a given node test file, do the following:
 
 1. Under `Application parameters` choose the node test file that you
-   are trying to test (e.g., `web/tests/message_store.test.js`).
+   are trying to test (e.g., `web/tests/message_store.test.cjs`).
 1. Under `Path Mappings`, set `Project Root` to `/srv/zulip`
    (i.e. where the `zulip` Git repository is mounted in the Vagrant guest).
 1. Use the WebStorm debugger; see [this overview][webstorm-debugging]

docs/tutorials/new-feature-tutorial.md

@@ -62,7 +62,7 @@ organization in Zulip). The following files are involved in the process:
 
 - `web/e2e-tests/admin.test.ts`: end-to-end tests for the organization
   admin settings pages.
-- `web/tests/dispatch.test.js`
+- `web/tests/dispatch.test.cjs`
 
 **Documentation**
 
@@ -668,11 +668,11 @@ frontend tests: [node-based unit tests](../testing/testing-with-node.md) and
 
 At the minimum, if you created a new function to update UI in
 `settings_org.ts`, you will need to mock that function in
-`web/tests/dispatch.test.js`. Add the name of the UI
+`web/tests/dispatch.test.cjs`. Add the name of the UI
 function you created to the following object with `noop` as the value:
 
 ```js
-// web/tests/dispatch.test.js
+// web/tests/dispatch.test.cjs
 
 set_global('settings_org', {
     update_email_change_display: noop,

tools/check-schemas

@@ -23,7 +23,7 @@ TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
 sys.path.insert(0, os.path.dirname(TOOLS_DIR))
 ROOT_DIR = os.path.dirname(TOOLS_DIR)
 
-EVENTS_JS = "web/tests/lib/events.js"
+EVENTS_JS = "web/tests/lib/events.cjs"
 
 # check for the venv
 from tools.lib import sanity_check

tools/linter_lib/custom_check.py

@@ -207,7 +207,7 @@ js_rules = RuleList(
             "exclude_pattern": r"(const |\S)style ?=",
             "description": "Avoid using the `style=` attribute; we prefer styling in CSS files",
             "exclude": {
-                "web/tests/copy_and_paste.test.js",
+                "web/tests/copy_and_paste.test.cjs",
             },
             "good_lines": ["#my-style {color: blue;}", "const style =", 'some_style = "test"'],
             "bad_lines": ['<p style="color: blue;">Foo</p>', 'style = "color: blue;"'],

tools/node_lib/dump_fixtures.js

@@ -1,5 +1,5 @@
 "use strict";
 
-const events = require("../../web/tests/lib/events.js");
+const events = require("../../web/tests/lib/events.cjs");
 
 console.info(JSON.stringify(events.fixtures, null, 4));

tools/test-js-with-node

@@ -20,7 +20,7 @@ sanity_check.check_venv(__file__)
 import orjson
 from zulint.printer import BOLDRED, CYAN, ENDC, GREEN
 
-INDEX_JS = os.path.join(ROOT_DIR, "web/tests/lib/index.js")
+INDEX_JS = os.path.join(ROOT_DIR, "web/tests/lib/index.cjs")
 NODE_COVERAGE_PATH = os.path.join(ROOT_DIR, "var/node-coverage/coverage-final.json")
 
 # Ideally, we wouldn't need this line, but it seems to be required to
@@ -29,7 +29,7 @@ os.chdir(ROOT_DIR)
 
 USAGE = """
     tools/test-js-with-node                                  - to run all tests
-    tools/test-js-with-node util.test.js activity.test.js  - to run just a couple tests
+    tools/test-js-with-node util.test.cjs activity.test.cjs  - to run just a couple tests
     tools/test-js-with-node --coverage                       - to generate coverage report
     """
 
@@ -291,14 +291,14 @@ EXEMPT_FILES = make_set(
         "web/src/zcommand.ts",
         "web/src/zform.js",
         "web/src/zulip_test.ts",
-        "web/tests/lib/example_user.js",
-        "web/tests/lib/mdiff.js",
-        "web/tests/lib/real_jquery.js",
-        "web/tests/lib/zjquery_element.js",
-        "web/tests/lib/zpage_billing_params.js",
+        "web/tests/lib/example_user.cjs",
+        "web/tests/lib/mdiff.cjs",
+        "web/tests/lib/real_jquery.cjs",
+        "web/tests/lib/zjquery_element.cjs",
+        "web/tests/lib/zpage_billing_params.cjs",
         # There are some important functions which are not called right now but will
         # be reused when we add tests for dropdown widget so it doesn't make sense to remove them.
-        "web/tests/recent_view.test.js",
+        "web/tests/recent_view.test.cjs",
     ]
 )
 
@@ -362,8 +362,8 @@ def print_error(msg: str) -> None:
 
 def clean_file(orig_fn: str) -> str:
     fn = orig_fn
-    if not fn.endswith(".test.js"):
-        fn += ".test.js"
+    if not fn.endswith(".test.cjs"):
+        fn += ".test.cjs"
     if "web/tests/" not in fn:
         fn = os.path.join(ROOT_DIR, "web", "tests", fn)
     fn = os.path.abspath(fn)
@@ -381,7 +381,7 @@ def clean_files(fns: list[str]) -> list[str]:
 def run_tests_via_node_js() -> int:
     os.environ["TZ"] = "UTC"
 
-    # The index.js test runner is the real "driver" here, and we launch
+    # The index.cjs test runner is the real "driver" here, and we launch
     # with either nyc or node, depending on whether we want coverage
     # reports.  Running under nyc is slower and creates funny
     # tracebacks, so you generally want to get coverage reports only
@@ -393,7 +393,7 @@ def run_tests_via_node_js() -> int:
         parallel = 1
         files = individual_files
     else:
-        files = sorted(glob.glob(os.path.join(ROOT_DIR, "web/tests/*.test.js")))
+        files = sorted(glob.glob(os.path.join(ROOT_DIR, "web/tests/*.test.cjs")))
 
     test_files = clean_files(files)
 
@@ -417,14 +417,15 @@ def run_tests_via_node_js() -> int:
         coverage_dir = os.path.join(ROOT_DIR, "var/node-coverage")
 
         nyc = os.path.join(ROOT_DIR, "node_modules/.bin/nyc")
-        command = [nyc, "--extension", ".hbs", "--extension", ".ts"]
+        command = [nyc]
+        command += [f"--extension={ext}" for ext in [".cjs", ".cts", ".hbs", ".mjs", ".mts", ".ts"]]
         command += ["--report-dir", coverage_dir]
         command += ["--temp-directory", coverage_dir]
         command += ["-r=lcov", "-r=json", "-r=text-summary"]
         command += node_tests_cmd
     else:
         # Normal testing, no coverage analysis.
-        # Run the index.js test runner, which runs all the other tests.
+        # Run the index.cjs test runner, which runs all the other tests.
         command = node_tests_cmd
 
     try:
@@ -473,8 +474,8 @@ def enforce_proper_coverage(coverage_json: Any) -> bool:
         *glob.glob("web/src/*.js"),
         *glob.glob("web/src/*.ts"),
         *glob.glob("web/src/billing/*.js"),
-        *glob.glob("web/tests/*.js"),
-        *glob.glob("web/tests/lib/*.js"),
+        *glob.glob("web/tests/*.cjs"),
+        *glob.glob("web/tests/lib/*.cjs"),
     }
     missing_files = sorted(EXEMPT_FILES - all_js_files)
     assert not missing_files, f"Missing files should be removed from EXEMPT_FILES: {missing_files}"

web/tests/activity.test.cjs

@@ -8,12 +8,12 @@ const {
     buddy_list_add_user_matching_view,
     buddy_list_add_other_user,
     stub_buddy_list_elements,
-} = require("./lib/buddy_list.js");
-const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+} = require("./lib/buddy_list.cjs");
+const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const $window_stub = $.create("window-stub");
 set_global("to_$", () => $window_stub);

web/tests/alert_words.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {set_global, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 set_global("page_params", {
     is_spectator: false,

web/tests/alert_words_ui.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {$t} = require("./lib/i18n.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {$t} = require("./lib/i18n.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const channel = mock_esm("../src/channel");
 

web/tests/blueslip_stacktrace.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const blueslip_stacktrace = zrequire("blueslip_stacktrace");
 

web/tests/bot_data.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const bot_data = zrequire("bot_data");
 

web/tests/browser_history.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {make_stub} = require("./lib/stub.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 window.location.hash = "#bogus";
 

web/tests/buddy_data.test.cjs

@@ -4,9 +4,9 @@ const assert = require("node:assert/strict");
 
 const _ = require("lodash");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 mock_esm("../src/settings_data", {
     user_can_access_all_other_users: () => true,
@@ -35,7 +35,7 @@ const user_settings = {};
 initialize_user_settings({user_settings});
 
 // The buddy_data module is mostly tested indirectly through
-// activity.test.js, but we should feel free to add direct tests
+// activity.test.cjs, but we should feel free to add direct tests
 // here.
 
 const selma = {

web/tests/buddy_list.test.cjs

@@ -10,11 +10,11 @@ const {
     buddy_list_add_user_matching_view,
     buddy_list_add_other_user,
     stub_buddy_list_elements,
-} = require("./lib/buddy_list.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+} = require("./lib/buddy_list.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const padded_widget = mock_esm("../src/padded_widget");
 const message_viewport = mock_esm("../src/message_viewport");

web/tests/channel.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_jquery, mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_jquery, mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const xhr_401 = {
     status: 401,

web/tests/color_data.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const color_data = zrequire("color_data");
 

web/tests/common.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 mock_esm("tippy.js", {
     default(arg) {

web/tests/components.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {$t} = require("./lib/i18n.js");
-const {mock_jquery, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {$t} = require("./lib/i18n.cjs");
+const {mock_jquery, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 let env;
 

web/tests/compose.test.cjs

@@ -4,11 +4,11 @@ const assert = require("node:assert/strict");
 
 const MockDate = require("mockdate");
 
-const {mock_banners} = require("./lib/compose_banner.js");
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_banners} = require("./lib/compose_banner.cjs");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const user_groups = zrequire("user_groups");
 

web/tests/compose_actions.test.cjs

@@ -2,11 +2,11 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_banners} = require("./lib/compose_banner.js");
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+const {mock_banners} = require("./lib/compose_banner.cjs");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const user_groups = zrequire("user_groups");
 

web/tests/compose_closed_ui.test.cjs

@@ -3,9 +3,9 @@
 // Setup
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 // Mocking and stubbing things
 set_global("document", "document-stub");

web/tests/compose_fade.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_jquery, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {mock_jquery, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 mock_jquery((selector) => {
     switch (selector) {

web/tests/compose_pm_pill.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const input_pill = mock_esm("../src/input_pill");
 const people = zrequire("people");

web/tests/compose_state.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const compose_pm_pill = mock_esm("../src/compose_pm_pill");
 

web/tests/compose_ui.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {$t} = require("./lib/i18n.js");
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {$t} = require("./lib/i18n.cjs");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 set_global("navigator", {});
 

web/tests/compose_validate.test.cjs

@@ -2,12 +2,12 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_banners} = require("./lib/compose_banner.js");
-const {$t} = require("./lib/i18n.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+const {mock_banners} = require("./lib/compose_banner.cjs");
+const {$t} = require("./lib/i18n.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const compose_banner = zrequire("compose_banner");
 const compose_pm_pill = zrequire("compose_pm_pill");

web/tests/compose_video.test.cjs

@@ -2,11 +2,11 @@
 
 const assert = require("node:assert/strict");
 
-const events = require("./lib/events.js");
-const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+const events = require("./lib/events.cjs");
+const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const channel = mock_esm("../src/channel");
 const compose_closed_ui = mock_esm("../src/compose_closed_ui");

web/tests/composebox_typeahead.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_banners} = require("./lib/compose_banner.js");
-const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_banners} = require("./lib/compose_banner.cjs");
+const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 let autosize_called;
 

web/tests/copy_and_paste.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const copy_and_paste = zrequire("copy_and_paste");
 const stream_data = zrequire("stream_data");

web/tests/deprecated_feature_notice.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {set_global, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 set_global("navigator", {
     userAgent: "",

web/tests/dispatch.test.cjs

@@ -2,13 +2,13 @@
 
 const assert = require("node:assert/strict");
 
-const events = require("./lib/events.js");
-const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.js");
-const {make_stub} = require("./lib/stub.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+const events = require("./lib/events.cjs");
+const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const event_fixtures = events.fixtures;
 const test_message = events.test_message;
@@ -865,7 +865,7 @@ run_test("submessage", ({override}) => {
     });
 });
 
-// For subscriptions, see dispatch_subs.test.js
+// For subscriptions, see dispatch_subs.test.cjs
 
 run_test("typing", ({override}) => {
     // Simulate that we are not typing.

web/tests/dispatch_subs.test.cjs

@@ -2,11 +2,11 @@
 
 const assert = require("node:assert/strict");
 
-const events = require("./lib/events.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {make_stub} = require("./lib/stub.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const events = require("./lib/events.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 const event_fixtures = events.fixtures;
 const test_user = events.test_user;

web/tests/drafts.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_banners} = require("./lib/compose_banner.js");
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_banners} = require("./lib/compose_banner.cjs");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const user_pill = mock_esm("../src/user_pill");
 const messages_overlay_ui = mock_esm("../src/messages_overlay_ui");

web/tests/echo.test.cjs

@@ -4,9 +4,9 @@ const assert = require("node:assert/strict");
 
 const MockDate = require("mockdate");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {make_stub} = require("./lib/stub.js");
-const {run_test, noop} = require("./lib/test.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
 
 const compose_notifications = mock_esm("../src/compose_notifications");
 const markdown = mock_esm("../src/markdown");

web/tests/emoji.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const events = require("./lib/events.js");
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const events = require("./lib/events.cjs");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 const emoji_codes = zrequire("../../static/generated/emoji/emoji_codes.json");
 

web/tests/emoji_picker.test.cjs

@@ -4,8 +4,8 @@ const assert = require("node:assert/strict");
 
 const _ = require("lodash");
 
-const {zrequire, set_global} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire, set_global} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const emoji = zrequire("emoji");
 const emoji_picker = zrequire("emoji_picker");

web/tests/example1.test.cjs

@@ -9,10 +9,10 @@
 // become clear as you keep reading.
 const assert = require("node:assert/strict");
 
-const {make_stream} = require("./lib/example_stream.js");
-const {make_user} = require("./lib/example_user.js");
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {make_stream} = require("./lib/example_stream.cjs");
+const {make_user} = require("./lib/example_user.cjs");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 // We will use our special zrequire helper to import the
 // Zulip code. We use zrequire instead of require,
@@ -43,7 +43,7 @@ const isaac = make_user({
 
 // The `people` object is a very fundamental object in the
 // Zulip app.  You can learn a lot more about it by reading
-// the tests in people.test.js in the same directory as this file.
+// the tests in people.test.cjs in the same directory as this file.
 
 // Let's exercise the code and use assert to verify it works!
 assert.ok(!people.is_known_user_id(isaac.user_id));
@@ -74,4 +74,4 @@ run_test("verify stream_data persists stream color", () => {
     const sub = stream_data.get_sub_by_name("Denmark");
     assert.equal(sub.color, "a1a1a1");
 });
-// See example2.test.js in this directory.
+// See example2.test.cjs in this directory.

web/tests/example2.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {make_stream} = require("./lib/example_stream.js");
-const {make_user} = require("./lib/example_user.js");
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {make_stream} = require("./lib/example_stream.cjs");
+const {make_user} = require("./lib/example_user.cjs");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 // Hopefully the basic patterns for testing data-oriented modules
 // are starting to become apparent.  To reinforce that, we will present

web/tests/example3.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {make_stream} = require("./lib/example_stream.js");
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {make_stream} = require("./lib/example_stream.cjs");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 // In the Zulip app you can narrow your message stream by topic, by
 // sender, by direct message recipient, by search keywords, etc.

web/tests/example4.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {make_bot} = require("./lib/example_user.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
+const {make_bot} = require("./lib/example_user.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
 
 /*
 
@@ -24,7 +24,7 @@ const {run_test, noop} = require("./lib/test.js");
     you are interested, all of these objects have test
     suites that have 100% line coverage on the modules
     that implement those objects.  For example, you can look
-    at people.test.js in this directory for more tests on the
+    at people.test.cjs in this directory for more tests on the
     people object.
 
     We can quickly review some testing concepts:

web/tests/example5.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {make_user} = require("./lib/example_user.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
+const {make_user} = require("./lib/example_user.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
 
 /*
    Our test from an earlier example verifies that the update events

web/tests/example6.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {make_stub} = require("./lib/stub.js");
-const {run_test, noop} = require("./lib/test.js");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
 
 /*
     The previous example was a bit extreme.  Generally we just

web/tests/example7.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {make_stream} = require("./lib/example_stream.js");
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {make_stream} = require("./lib/example_stream.cjs");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 /*
 

web/tests/example8.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {make_user} = require("./lib/example_user.js");
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {make_user} = require("./lib/example_user.cjs");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 mock_esm("../src/settings_data", {
     user_can_access_all_other_users: () => true,

web/tests/fenced_code.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const fenced_code = zrequire("../shared/src/fenced_code");
 

web/tests/fetch_status.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 mock_esm("../src/message_feed_loading", {
     hide_loading_older() {},

web/tests/filter.test.cjs

@@ -4,11 +4,11 @@ const assert = require("node:assert/strict");
 
 const {parseOneAddress} = require("email-addresses");
 
-const {mock_esm, with_overrides, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_esm, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const message_store = mock_esm("../src/message_store");
 const user_topics = mock_esm("../src/user_topics");

web/tests/fold_dict.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const {FoldDict} = zrequire("fold_dict");
 

web/tests/gear_menu_util.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const gear_menu_util = zrequire("gear_menu_util");
 const {set_realm} = zrequire("state_data");

web/tests/hash_util.test.cjs

@@ -4,8 +4,8 @@ const assert = require("node:assert/strict");
 
 const message_link_test_cases = require("../../zerver/tests/fixtures/message_link_test_cases.json");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const hash_parser = zrequire("hash_parser");
 const hash_util = zrequire("hash_util");

web/tests/hashchange.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 let $window_stub;
 set_global("to_$", () => $window_stub);

web/tests/hotkey.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.js");
-const {make_stub} = require("./lib/stub.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 // Important note on these tests:
 

web/tests/i18n.test.cjs

@@ -4,9 +4,9 @@ const assert = require("node:assert/strict");
 
 const _ = require("lodash");
 
-const {unmock_module, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {unmock_module, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 // We download our translations in `page_params` (which
 // are for the user's chosen language), so we simulate

web/tests/input_pill.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 set_global("document", {});
 class ClipboardEvent {}

web/tests/internal_url.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const internal_url = zrequire("../shared/src/internal_url");
 

web/tests/keydown_util.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const keydown_util = zrequire("keydown_util");
 

web/tests/lazy_set.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 const {LazySet} = zrequire("lazy_set");
 

web/tests/left_sidebar_navigation_area.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 mock_esm("../src/resize", {
     resize_stream_filters_container() {},

web/tests/lib/buddy_list.cjs

@@ -1,7 +1,7 @@
 "use strict";
 
-const {noop} = require("./test.js");
-const $ = require("./zjquery.js");
+const {noop} = require("./test.cjs");
+const $ = require("./zjquery.cjs");
 
 let users_matching_view = [];
 exports.buddy_list_add_user_matching_view = (user_id, $stub) => {

web/tests/lib/compose_banner.cjs

@@ -2,8 +2,8 @@
 
 const compose_banner = require("../../src/compose_banner.ts");
 
-const {noop} = require("./test.js");
-const $ = require("./zjquery.js");
+const {noop} = require("./test.cjs");
+const $ = require("./zjquery.cjs");
 
 exports.mock_banners = () => {
     // zjquery doesn't support `remove`, which is used when clearing the compose box.

web/tests/lib/index.cjs

@@ -8,14 +8,14 @@ require("handlebars/runtime.js");
 const {JSDOM} = require("jsdom");
 const _ = require("lodash");
 
-const handlebars = require("./handlebars.js");
-const stub_i18n = require("./i18n.js");
-const namespace = require("./namespace.js");
-const test = require("./test.js");
-const blueslip = require("./zblueslip.js");
-const zjquery = require("./zjquery.js");
-const zpage_billing_params = require("./zpage_billing_params.js");
-const zpage_params = require("./zpage_params.js");
+const handlebars = require("./handlebars.cjs");
+const stub_i18n = require("./i18n.cjs");
+const namespace = require("./namespace.cjs");
+const test = require("./test.cjs");
+const blueslip = require("./zblueslip.cjs");
+const zjquery = require("./zjquery.cjs");
+const zpage_billing_params = require("./zpage_billing_params.cjs");
+const zpage_params = require("./zpage_params.cjs");
 
 process.env.NODE_ENV = "test";
 
@@ -88,7 +88,7 @@ require("../../src/templates.js"); // register Zulip extensions
 async function run_one_module(file) {
     zjquery.clear_initialize_function();
     zjquery.clear_all_elements();
-    console.info("running test " + path.basename(file, ".test.js"));
+    console.info("running test " + path.basename(file, ".test.cjs"));
     test.set_current_file_name(file);
     test.suite.length = 0;
     require(file);

web/tests/lib/markdown_assert.cjs

@@ -27,7 +27,7 @@ const assert = require("node:assert/strict");
 const {JSDOM} = require("jsdom");
 const _ = require("lodash");
 
-const mdiff = require("./mdiff.js");
+const mdiff = require("./mdiff.cjs");
 
 // Module-level global instance of MarkdownComparer, initialized when needed
 let _markdownComparerInstance = null;

web/tests/lib/namespace.cjs

@@ -6,7 +6,7 @@ const path = require("node:path");
 
 const callsites = require("callsites");
 
-const $ = require("./zjquery.js");
+const $ = require("./zjquery.cjs");
 
 const new_globals = new Set();
 let old_globals = {};
@@ -18,7 +18,7 @@ const used_module_mocks = new Set();
 const used_templates = new Set();
 
 const jquery_path = require.resolve("jquery");
-const real_jquery_path = require.resolve("./real_jquery.js");
+const real_jquery_path = require.resolve("./real_jquery.cjs");
 
 let in_mid_render = false;
 let jquery_function;

web/tests/lib/test.cjs

@@ -1,10 +1,10 @@
 "use strict";
 
-const namespace = require("./namespace.js");
-const zblueslip = require("./zblueslip.js");
-const $ = require("./zjquery.js");
-const zpage_billing_params = require("./zpage_billing_params.js");
-const zpage_params = require("./zpage_params.js");
+const namespace = require("./namespace.cjs");
+const zblueslip = require("./zblueslip.cjs");
+const $ = require("./zjquery.cjs");
+const zpage_billing_params = require("./zpage_billing_params.cjs");
+const zpage_params = require("./zpage_params.cjs");
 
 let current_file_name;
 let verbose = false;

web/tests/lib/zjquery.cjs

@@ -8,8 +8,8 @@ const assert = require("node:assert/strict");
     and then subsequent calls to $("#foo") get the
     same instance.
 */
-const FakeElement = require("./zjquery_element.js");
-const FakeEvent = require("./zjquery_event.js");
+const FakeElement = require("./zjquery_element.cjs");
+const FakeEvent = require("./zjquery_event.cjs");
 
 function verify_selector_for_zulip(selector) {
     const is_valid =

web/tests/lib/zjquery_element.cjs

@@ -2,7 +2,7 @@
 
 const assert = require("node:assert/strict");
 
-const FakeEvent = require("./zjquery_event.js");
+const FakeEvent = require("./zjquery_event.cjs");
 
 const noop = function () {};
 

web/tests/linkifiers.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 const linkifiers = zrequire("linkifiers");
 

web/tests/list_cursor.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const {ListCursor} = zrequire("list_cursor");
 

web/tests/list_widget.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, mock_jquery, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, mock_jquery, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 // We need these stubs to get by instanceof checks.
 // The ListWidget library allows you to insert objects

web/tests/markdown.test.cjs

@@ -6,10 +6,10 @@ const katex = require("katex");
 
 const markdown_test_cases = require("../../zerver/tests/fixtures/markdown_test_cases.json");
 
-const markdown_assert = require("./lib/markdown_assert.js");
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const {page_params} = require("./lib/zpage_params.js");
+const markdown_assert = require("./lib/markdown_assert.cjs");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const example_realm_linkifiers = [
     {

web/tests/markdown_parse.test.cjs

@@ -4,8 +4,8 @@ const assert = require("node:assert/strict");
 
 const url_template_lib = require("url-template");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const markdown = zrequire("markdown");
 const linkifiers = zrequire("linkifiers");

web/tests/message_edit.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const message_edit = zrequire("message_edit");
 const people = zrequire("people");

web/tests/message_events.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 const message_edit = mock_esm("../src/message_edit");
 const message_lists = mock_esm("../src/message_lists");

web/tests/message_flags.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {mock_esm, set_global, with_overrides, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const channel = mock_esm("../src/channel");
 const message_live_update = mock_esm("../src/message_live_update");

web/tests/message_list.test.cjs

@@ -2,11 +2,11 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {make_stub} = require("./lib/stub.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {make_stub} = require("./lib/stub.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 // These unit tests for web/src/message_list.ts emphasize the model-ish
 // aspects of the MessageList class.  We have to stub out a few functions

web/tests/message_list_data.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 const user_topics = zrequire("user_topics");
 const muted_users = zrequire("muted_users");

web/tests/message_list_view.test.cjs

@@ -4,9 +4,9 @@ const assert = require("node:assert/strict");
 
 const _ = require("lodash");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
 
 set_global("document", "document-stub");
 

web/tests/message_store.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, set_global, zrequire} = require("./lib/namespace.js");
-const {run_test, noop} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {mock_esm, set_global, zrequire} = require("./lib/namespace.cjs");
+const {run_test, noop} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 mock_esm("../src/settings_data", {
     user_can_access_all_other_users: () => true,

web/tests/message_view.test.cjs

@@ -2,11 +2,11 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const hash_util = zrequire("hash_util");
 const compose_state = zrequire("compose_state");

web/tests/muted_users.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const muted_users = zrequire("muted_users");
 const {initialize_user_settings} = zrequire("user_settings");

web/tests/narrow_local.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const all_messages_data = zrequire("../src/all_messages_data");
 

web/tests/narrow_state.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 const people = zrequire("people");
 const {Filter} = zrequire("../src/filter");

web/tests/narrow_unread.test.cjs

@@ -2,9 +2,9 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const blueslip = require("./lib/zblueslip.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const blueslip = require("./lib/zblueslip.cjs");
 
 mock_esm("../src/user_topics", {
     is_topic_muted: () => false,

web/tests/navbar_alerts.test.cjs

@@ -4,9 +4,9 @@ const assert = require("node:assert/strict");
 
 const {addDays} = require("date-fns");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 page_params.is_spectator = false;
 

web/tests/notifications.test.cjs

@@ -2,10 +2,10 @@
 
 const assert = require("node:assert/strict");
 
-const {mock_esm, zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
-const $ = require("./lib/zjquery.js");
-const {page_params} = require("./lib/zpage_params.js");
+const {mock_esm, zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+const $ = require("./lib/zjquery.cjs");
+const {page_params} = require("./lib/zpage_params.cjs");
 
 mock_esm("../src/electron_bridge");
 mock_esm("../src/spoilers", {hide_spoilers_in_notification() {}});

web/tests/password.test.cjs

@@ -2,8 +2,8 @@
 
 const assert = require("node:assert/strict");
 
-const {zrequire} = require("./lib/namespace.js");
-const {run_test} = require("./lib/test.js");
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
 
 const {password_quality, password_warning} = zrequire("password_quality");