MACHIN

32/node_modules/foreground-child/dist/mjs/index.js

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+import { spawn as nodeSpawn, } from 'child_process';
+import crossSpawn from 'cross-spawn';
+import { onExit } from 'signal-exit';
+import { allSignals } from './all-signals.js';
+import { watchdog } from './watchdog.js';
+/* c8 ignore start */
+const spawn = process?.platform === 'win32' ? crossSpawn : nodeSpawn;
+/**
+ * Normalizes the arguments passed to `foregroundChild`.
+ *
+ * Exposed for testing.
+ *
+ * @internal
+ */
+export const normalizeFgArgs = (fgArgs) => {
+    let [program, args = [], spawnOpts = {}, cleanup = () => { }] = fgArgs;
+    if (typeof args === 'function') {
+        cleanup = args;
+        spawnOpts = {};
+        args = [];
+    }
+    else if (!!args && typeof args === 'object' && !Array.isArray(args)) {
+        if (typeof spawnOpts === 'function')
+            cleanup = spawnOpts;
+        spawnOpts = args;
+        args = [];
+    }
+    else if (typeof spawnOpts === 'function') {
+        cleanup = spawnOpts;
+        spawnOpts = {};
+    }
+    if (Array.isArray(program)) {
+        const [pp, ...pa] = program;
+        program = pp;
+        args = pa;
+    }
+    return [program, args, { ...spawnOpts }, cleanup];
+};
+export function foregroundChild(...fgArgs) {
+    const [program, args, spawnOpts, cleanup] = normalizeFgArgs(fgArgs);
+    spawnOpts.stdio = [0, 1, 2];
+    if (process.send) {
+        spawnOpts.stdio.push('ipc');
+    }
+    const child = spawn(program, args, spawnOpts);
+    const unproxySignals = proxySignals(child);
+    const childHangup = () => {
+        try {
+            child.kill('SIGHUP');
+            /* c8 ignore start */
+        }
+        catch (_) {
+            // SIGHUP is weird on windows
+            child.kill('SIGTERM');
+        }
+        /* c8 ignore stop */
+    };
+    const removeOnExit = onExit(childHangup);
+    const dog = watchdog(child);
+    let done = false;
+    child.on('close', async (code, signal) => {
+        dog.kill('SIGKILL');
+        /* c8 ignore start */
+        if (done) {
+            return;
+        }
+        /* c8 ignore stop */
+        done = true;
+        const result = cleanup(code, signal);
+        const res = isPromise(result) ? await result : result;
+        removeOnExit();
+        unproxySignals();
+        if (res === false)
+            return;
+        else if (typeof res === 'string') {
+            signal = res;
+            code = null;
+        }
+        else if (typeof res === 'number') {
+            code = res;
+            signal = null;
+        }
+        if (signal) {
+            // If there is nothing else keeping the event loop alive,
+            // then there's a race between a graceful exit and getting
+            // the signal to this process.  Put this timeout here to
+            // make sure we're still alive to get the signal, and thus
+            // exit with the intended signal code.
+            /* istanbul ignore next */
+            setTimeout(() => { }, 2000);
+            try {
+                process.kill(process.pid, signal);
+                /* c8 ignore start */
+            }
+            catch (_) {
+                process.kill(process.pid, 'SIGTERM');
+            }
+            /* c8 ignore stop */
+        }
+        else {
+            process.exit(code || 0);
+        }
+    });
+    if (process.send) {
+        process.removeAllListeners('message');
+        child.on('message', (message, sendHandle) => {
+            process.send?.(message, sendHandle);
+        });
+        process.on('message', (message, sendHandle) => {
+            child.send(message, sendHandle);
+        });
+    }
+    return child;
+}
+/**
+ * Starts forwarding signals to `child` through `parent`.
+ */
+const proxySignals = (child) => {
+    const listeners = new Map();
+    for (const sig of allSignals) {
+        const listener = () => {
+            // some signals can only be received, not sent
+            try {
+                child.kill(sig);
+                /* c8 ignore start */
+            }
+            catch (_) { }
+            /* c8 ignore stop */
+        };
+        try {
+            // if it's a signal this system doesn't recognize, skip it
+            process.on(sig, listener);
+            listeners.set(sig, listener);
+            /* c8 ignore start */
+        }
+        catch (_) { }
+        /* c8 ignore stop */
+    }
+    return () => {
+        for (const [sig, listener] of listeners) {
+            process.removeListener(sig, listener);
+        }
+    };
+};
+const isPromise = (o) => !!o && typeof o === 'object' && typeof o.then === 'function';
+//# sourceMappingURL=index.js.map