File openai.ts

packages/core/src/plugin/provider/openai.ts:None–None

import { createServer } from "node:http"
import type { IntegrationOAuthMethodRegistration } from "@opencode-ai/plugin/v2/effect/integration"
import { define } from "@opencode-ai/plugin/v2/effect/plugin"
import { Deferred, Effect } from "effect"