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import { test, expect } from "bun:test";
import { spawnSync } from "bun";
import { bunEnv, bunExe } from "../../../harness";
import { join } from "path";
// The purpose of this test is to check that event loop tasks scheduled from
// JavaScriptCore (rather than Bun) keep the process alive.
//
// The problem used to be that Bun would close prematurely when async work was
// scheduled by JavaScriptCore.
//
// At the time of writing, this includes WebAssembly compilation and Atomics
// It excludes FinalizationRegistry since that doesn't need to keep the process alive.
test("es-module-lexer consistently loads", () => {
for (let i = 0; i < 10; i++) {
const { stdout, exitCode } = spawnSync({
cmd: [bunExe(), join(import.meta.dir, "index.ts")],
env: bunEnv,
});
expect(JSON.parse(stdout?.toString())).toEqual({
imports: [
{
n: "b",
s: 19,
e: 20,
ss: 0,
se: 21,
d: -1,
a: -1,
},
],
exports: [
{
s: 36,
e: 37,
ls: 36,
le: 37,
n: "c",
ln: "c",
},
],
});
expect(exitCode).toBe(42);
}
});
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