feat: improve rules_js parity

tests/js_compat_test/BUILD.bazel

@@ -0,0 +1,41 @@
+load("//js:defs.bzl", "js_binary", "js_run_devserver", "js_test", "ts_library")
+load("@rules_shell//shell:sh_test.bzl", "sh_test")
+
+ts_library(
+    name = "helper_lib",
+    srcs = ["helper.ts"],
+    data = ["payload.txt"],
+)
+
+js_binary(
+    name = "compat_bin",
+    entry_point = "main.ts",
+    deps = [":helper_lib"],
+    args = ["compat-mode"],
+)
+
+sh_test(
+    name = "js_binary_compat_test",
+    srcs = ["run_binary.sh"],
+    args = ["$(location :compat_bin)"],
+    data = [":compat_bin"],
+)
+
+js_test(
+    name = "compat_suite",
+    entry_point = "app.test.ts",
+    deps = [":helper_lib"],
+)
+
+js_run_devserver(
+    name = "compat_devserver",
+    tool = ":compat_bin",
+    args = ["devserver-mode"],
+)
+
+sh_test(
+    name = "js_run_devserver_compat_test",
+    srcs = ["run_devserver.sh"],
+    args = ["$(location :compat_devserver)"],
+    data = [":compat_devserver"],
+)

tests/js_compat_test/app.test.ts

@@ -0,0 +1,7 @@
+import { expect, test } from "bun:test";
+
+import { helperMessage } from "./helper.ts";
+
+test("js_test compatibility layer propagates deps and data", () => {
+  expect(helperMessage()).toBe("helper:payload-from-lib");
+});

tests/js_compat_test/helper.ts

@@ -0,0 +1,6 @@
+import { readFileSync } from "node:fs";
+
+export function helperMessage(): string {
+  const payload = readFileSync(new URL("./payload.txt", import.meta.url), "utf8").trim();
+  return `helper:${payload}`;
+}

tests/js_compat_test/main.ts

@@ -0,0 +1,3 @@
+import { helperMessage } from "./helper.ts";
+
+console.log(`${helperMessage()} ${Bun.argv.slice(2).join(" ")}`.trim());

tests/js_compat_test/payload.txt

@@ -0,0 +1 @@
+payload-from-lib

tests/js_compat_test/run_binary.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+binary="$1"
+output="$("${binary}")"
+
+if [[ ${output} != "helper:payload-from-lib compat-mode" ]]; then
+  echo "unexpected output: ${output}" >&2
+  exit 1
+fi

tests/js_compat_test/run_devserver.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+binary="$1"
+output="$("${binary}")"
+
+if [[ ${output} != "helper:payload-from-lib compat-mode devserver-mode" ]]; then
+  echo "unexpected output: ${output}" >&2
+  exit 1
+fi