Web Fetch: Request.text() / Request.json() / Request.arrayBuffer() return 0 instead of the body #1688

Scope

new Request(url, { body }).text() / .json() / .arrayBuffer() return 0 instead of the request body under Perry-native compile. req.method / req.url / req.headers work (#1649); only the body-consuming methods are unimplemented.

This blocks the Hono app.post('/api/echo', async c => c.json({ body: await c.req.json() })) route in the #1655 acceptance — c.req.json() reads the request body via req.text()/the body stream.

Repro (Perry @ main 7371549)

const req = new Request('http://localhost/x', {
  method: 'POST', headers: { 'content-type': 'application/json' }, body: '{"x":1}',
})
console.log('method', req.method)        // POST  ✅
console.log('text', await req.text())    // 0     ❌ (expected '{"x":1}')
console.log('json', JSON.stringify(await req.json()))  // 0  ❌ (expected {"x":1})

Observed: text and json both yield 0.
Expected (Node): {"x":1} / {"x":1}.

Note

js_request_get_body already stores the body string (used by the req.body property getter); the gap is that Request.text() / .json() / .arrayBuffer() aren't wired to it (the typed module=="Request" codegen arm in lower_call/options/fetch.rs handles url/method/body/headers properties but no body methods, and there's no untyped dispatch_request_method). Mirror the existing Response .text()/.json() path.

Related

• Web Fetch: Request.headers is a numeric handle, not a Headers instance — breaks every Hono adapter #1649 (Request.headers, closed), Tracker: Hono on Perry — runtime-agnostic app.fetch contract working end-to-end #1655 (Hono tracker) — blocks the POST /api/echo line.