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test_js_entry_tla_resume.cjs
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test_js_entry_tla_resume.cjs
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const { spawnSync } = require('child_process');
const fs = require('fs');
const os = require('os');
const path = require('path');
function assert(condition, message) {
if (!condition) throw new Error(message);
}
const tmpRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'ant-js-entry-tla-resume-'));
const scriptPath = path.join(tmpRoot, 'entry.mjs');
fs.writeFileSync(
scriptPath,
[
'const order = [];',
'const settled = Promise.resolve("ready");',
'async function leaf() {',
' order.push("leaf-before");',
' const value = await settled;',
' order.push(`leaf-after:${value}`);',
' return value;',
'}',
'async function middle() {',
' order.push("middle-before");',
' const value = await leaf();',
' order.push(`middle-after:${value}`);',
' return value;',
'}',
'order.push("start");',
'await Promise.resolve();',
'order.push("after-microtask");',
'const nested = await middle();',
'order.push(`nested:${nested}`);',
'await new Promise((resolve) => setTimeout(resolve, 0));',
'order.push("after-timer");',
'console.log(order.join(","));',
'',
].join('\n')
);
const result = spawnSync(process.execPath, [scriptPath], {
encoding: 'utf8',
});
if (result.error) throw result.error;
assert(
result.status === 0,
`expected direct .mjs TLA entry to exit 0, got ${result.status}\nstdout:\n${result.stdout}\nstderr:\n${result.stderr}`
);
assert(
result.stdout === 'start,after-microtask,middle-before,leaf-before,leaf-after:ready,middle-after:ready,nested:ready,after-timer\n',
`expected stdout to show full TLA resume order, got ${JSON.stringify(result.stdout)}`
);
assert(
!/invalid suspended frame state|EXC_BAD_ACCESS|segmentation fault/i.test(result.stderr),
`expected no suspended-frame crash markers, got stderr:\n${result.stderr}`
);
console.log('direct JavaScript entrypoint top-level await resumes correctly');

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