init

runtime/adapters/bun.ts

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+import type {
+    RuntimeContext,
+    ProcHandle,
+    CompatibleBodyInit,
+    SpawnOptions,
+} from "../types";
+import { resolve } from "pathe"; // Unjs 标准：跨平台路径处理
+import { isCI } from "std-env";
+
+export const createBunRuntime = (): RuntimeContext => ({
+    fs: {
+        exists: (path) => Bun.file(path).exists(),
+        // 返回标准 Response，极大简化了后续的文件解析逻辑
+        read: async (path) => new Response(Bun.file(path)),
+        write: async (path, data: CompatibleBodyInit) => {
+            await Bun.write(path, data as any);
+        },
+        openWritable: (path) => {
+            const file = Bun.file(path);
+            // 利用 Bun.file().writer() 转换为符合 Web 标准的 WritableStream
+            return new WritableStream({
+                async write(chunk) {
+                    const writer = file.writer();
+                    writer.write(chunk);
+                    writer.flush();
+                },
+            });
+        },
+        mkdir: async (path, options) => {
+            const fs = await import("node:fs/promises");
+            await fs.mkdir(path, options);
+        },
+        remove: async (path) => {
+            const fs = await import("node:fs/promises");
+            await fs.rm(path, { recursive: true, force: true });
+        },
+        symlink: async (target, path) => {
+            const fs = await import("node:fs/promises");
+            await fs.symlink(target, path);
+        },
+        readdir: async (path) => {
+            const fs = await import("node:fs/promises");
+            return await fs.readdir(path);
+        },
+        stat: async (path) => {
+            const { stat } = await import("node:fs/promises");
+            const s = await stat(path);
+            return {
+                size: s.size,
+                mtime: s.mtime,
+                isDirectory: s.isDirectory(),
+            };
+        },
+    },
+    proc: {
+        spawn: (args: string[], options: SpawnOptions = {}): ProcHandle => {
+            // 核心改进：自动处理交互逻辑
+            // 如果是在 CI 环境，强制使用 pipe 避免挂起；否则根据用户需求或自动选择
+            const mode = options.stdio || (isCI ? "pipe" : "inherit");
+
+            const process = Bun.spawn(args, {
+                cwd: options.cwd,
+                env: options.env,
+                stdout: mode,
+                stderr: mode,
+                stdin: mode,
+            });
+
+            return {
+                pid: process.pid,
+                exited: process.exited,
+                kill: (sig) => process.kill(sig as any),
+                // 仅在非继承模式下暴露流，避免类型与行为冲突
+                stdout: mode === "pipe" ? (process.stdout as any) : undefined,
+                stderr: mode === "pipe" ? (process.stderr as any) : undefined,
+                stdin: mode === "pipe" ? (process.stdin as any) : undefined,
+            };
+        },
+    },
+});