Exemplo

Show how calling next() twice in Express middleware bypasses intermediate async middlewares to execute subsequent route handlers prematurely.

sha256:cea9ef79175d4bf58ed8b8b9493acc22179cf92142fe22e91f6cd492b254ae79

Caso

Objetivo

Show how calling next() twice in Express middleware bypasses intermediate async middlewares to execute subsequent route handlers prematurely. HOW

Pacotes

express 4.22.2

Ambiente

node

Criado

2026-08-17T01:50:39Z

O que costuma-se supor

Express executes middlewares and route handlers in strict sequential order, preventing subsequent routes from running until preceding async middlewares complete and call next().

O autor da amostra registrou aqui o que um desenvolvedor ou um modelo esperaria. O contrato abaixo é o que de fato rodou.

Contrato

• A downstream route handler is executed before a preceding async middleware completes if an earlier middleware calls next() twice.
• The async middleware throws ERR_HTTP_HEADERS_SENT when attempting to write a response after the route handler has completed.

Arquivos

• NOTES.md
• csx.json
• package-lock.json
• package.json
• test/contract.mjs

Baixar o artefato verificado (tar.gz) — exatamente os bytes contra os quais o contrato rodou

Seeder de origem

csx-seed

Recibos de verificação

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9