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import {
FileSink,
NullSubprocess,
PipedSubprocess,
ReadableSubprocess,
SyncSubprocess,
WritableSubprocess,
} from "bun";
import * as tsd from "tsd";
Bun.spawn(["echo", "hello"]);
{
const proc = Bun.spawn(["echo", "hello"], {
cwd: "./path/to/subdir", // specify a working direcory
env: { ...process.env, FOO: "bar" }, // specify environment variables
onExit(proc, exitCode, signalCode, error) {
// exit handler
},
});
proc.pid; // process ID of subprocess
tsd.expectType<ReadableStream<Uint8Array>>(proc.stdout);
tsd.expectType<undefined>(proc.stderr);
tsd.expectType<undefined>(proc.stdin);
}
{
const proc = Bun.spawn(["cat"], {
stdin: await fetch(
"https://raw.githubusercontent.com/oven-sh/bun/main/examples/hashing.js",
),
});
const text = await new Response(proc.stdout).text();
console.log(text); // "const input = "hello world".repeat(400); ..."
}
{
const proc = Bun.spawn(["cat"], {
stdin: "pipe", // return a FileSink for writing
});
// enqueue string data
proc.stdin.write("hello");
// enqueue binary data
const enc = new TextEncoder();
proc.stdin.write(enc.encode(" world!"));
// send buffered data
proc.stdin.flush();
// close the input stream
proc.stdin.end();
}
{
const proc = Bun.spawn(["echo", "hello"]);
const text = await new Response(proc.stdout).text();
console.log(text); // => "hello"
}
{
const proc = Bun.spawn(["echo", "hello"], {
onExit(proc, exitCode, signalCode, error) {
// exit handler
},
});
await proc.exited; // resolves when process exit
proc.killed; // boolean — was the process killed?
proc.exitCode; // null | number
proc.signalCode; // null | "SIGABRT" | "SIGALRM" | ...
proc.kill();
proc.killed; // true
proc.kill(); // specify an exit code
proc.unref();
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: ["pipe", "pipe", "pipe"],
});
tsd.expectType<FileSink>(proc.stdin);
tsd.expectType<ReadableStream<Uint8Array>>(proc.stdout);
tsd.expectType<ReadableStream<Uint8Array>>(proc.stderr);
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: ["inherit", "inherit", "inherit"],
});
tsd.expectType<undefined>(proc.stdin);
tsd.expectType<undefined>(proc.stdout);
tsd.expectType<undefined>(proc.stderr);
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: ["ignore", "ignore", "ignore"],
});
tsd.expectType<undefined>(proc.stdin);
tsd.expectType<undefined>(proc.stdout);
tsd.expectType<undefined>(proc.stderr);
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: [null, null, null],
});
tsd.expectType<undefined>(proc.stdin);
tsd.expectType<undefined>(proc.stdout);
tsd.expectType<undefined>(proc.stderr);
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: [new Request("1"), null, null],
});
tsd.expectType<number>(proc.stdin);
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: [new Response("1"), null, null],
});
tsd.expectType<number>(proc.stdin);
}
{
const proc = Bun.spawn(["echo", "hello"], {
stdio: [new Uint8Array([]), null, null],
});
tsd.expectType<number>(proc.stdin);
}
tsd.expectAssignable<PipedSubprocess>(
Bun.spawn([], { stdio: ["pipe", "pipe", "pipe"] }),
);
tsd.expectNotAssignable<PipedSubprocess>(
Bun.spawn([], { stdio: ["inherit", "inherit", "inherit"] }),
);
tsd.expectAssignable<ReadableSubprocess>(
Bun.spawn([], { stdio: ["ignore", "pipe", "pipe"] }),
);
tsd.expectAssignable<ReadableSubprocess>(
Bun.spawn([], { stdio: ["pipe", "pipe", "pipe"] }),
);
tsd.expectNotAssignable<ReadableSubprocess>(
Bun.spawn([], { stdio: ["pipe", "ignore", "pipe"] }),
);
tsd.expectAssignable<WritableSubprocess>(
Bun.spawn([], { stdio: ["pipe", "pipe", "pipe"] }),
);
tsd.expectAssignable<WritableSubprocess>(
Bun.spawn([], { stdio: ["pipe", "ignore", "inherit"] }),
);
tsd.expectNotAssignable<WritableSubprocess>(
Bun.spawn([], { stdio: ["ignore", "pipe", "pipe"] }),
);
tsd.expectAssignable<NullSubprocess>(
Bun.spawn([], { stdio: ["ignore", "inherit", "ignore"] }),
);
tsd.expectAssignable<NullSubprocess>(
Bun.spawn([], { stdio: [null, null, null] }),
);
tsd.expectNotAssignable<ReadableSubprocess>(Bun.spawn([], {}));
tsd.expectNotAssignable<PipedSubprocess>(Bun.spawn([], {}));
tsd.expectAssignable<SyncSubprocess>(Bun.spawnSync([], {}));
tsd.expectAssignable<SyncSubprocess>(Bun.spawnSync([], {}));
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