add hw2

node_modules/signal-exit/dist/cjs/browser.d.ts

@@ -0,0 +1,12 @@
+/**
+ * This is a browser shim that provides the same functional interface
+ * as the main node export, but it does nothing.
+ * @module
+ */
+import type { Handler } from './index.js';
+export declare const onExit: (cb: Handler, opts: {
+    alwaysLast?: boolean;
+}) => () => void;
+export declare const load: () => void;
+export declare const unload: () => void;
+//# sourceMappingURL=browser.d.ts.map

node_modules/signal-exit/dist/cjs/browser.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"browser.d.ts","sourceRoot":"","sources":["../../src/browser.ts"],"names":[],"mappings":"AAAA;;;;GAIG;AACH,OAAO,KAAK,EAAE,OAAO,EAAE,MAAM,YAAY,CAAA;AACzC,eAAO,MAAM,MAAM,EAAE,CACnB,EAAE,EAAE,OAAO,EACX,IAAI,EAAE;IAAE,UAAU,CAAC,EAAE,OAAO,CAAA;CAAE,KAC3B,MAAM,IAAqB,CAAA;AAChC,eAAO,MAAM,IAAI,YAAW,CAAA;AAC5B,eAAO,MAAM,MAAM,YAAW,CAAA"}

node_modules/signal-exit/dist/cjs/browser.js

@@ -0,0 +1,10 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.unload = exports.load = exports.onExit = void 0;
+const onExit = () => () => { };
+exports.onExit = onExit;
+const load = () => { };
+exports.load = load;
+const unload = () => { };
+exports.unload = unload;
+//# sourceMappingURL=browser.js.map

node_modules/signal-exit/dist/cjs/browser.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"browser.js","sourceRoot":"","sources":["../../src/browser.ts"],"names":[],"mappings":";;;AAMO,MAAM,MAAM,GAGD,GAAG,EAAE,CAAC,GAAG,EAAE,GAAE,CAAC,CAAA;AAHnB,QAAA,MAAM,UAGa;AACzB,MAAM,IAAI,GAAG,GAAG,EAAE,GAAE,CAAC,CAAA;AAAf,QAAA,IAAI,QAAW;AACrB,MAAM,MAAM,GAAG,GAAG,EAAE,GAAE,CAAC,CAAA;AAAjB,QAAA,MAAM,UAAW","sourcesContent":["/**\n * This is a browser shim that provides the same functional interface\n * as the main node export, but it does nothing.\n * @module\n */\nimport type { Handler } from './index.js'\nexport const onExit: (\n  cb: Handler,\n  opts: { alwaysLast?: boolean }\n) => () => void = () => () => {}\nexport const load = () => {}\nexport const unload = () => {}\n"]}

node_modules/signal-exit/dist/cjs/index.d.ts

@@ -0,0 +1,48 @@
+/// <reference types="node" />
+import { signals } from './signals.js';
+export { signals };
+/**
+ * A function that takes an exit code and signal as arguments
+ *
+ * In the case of signal exits *only*, a return value of true
+ * will indicate that the signal is being handled, and we should
+ * not synthetically exit with the signal we received. Regardless
+ * of the handler return value, the handler is unloaded when an
+ * otherwise fatal signal is received, so you get exactly 1 shot
+ * at it, unless you add another onExit handler at that point.
+ *
+ * In the case of numeric code exits, we may already have committed
+ * to exiting the process, for example via a fatal exception or
+ * unhandled promise rejection, so it is impossible to stop safely.
+ */
+export type Handler = (code: number | null | undefined, signal: NodeJS.Signals | null) => true | void;
+export declare const 
+/**
+ * Called when the process is exiting, whether via signal, explicit
+ * exit, or running out of stuff to do.
+ *
+ * If the global process object is not suitable for instrumentation,
+ * then this will be a no-op.
+ *
+ * Returns a function that may be used to unload signal-exit.
+ */
+onExit: (cb: Handler, opts?: {
+    alwaysLast?: boolean | undefined;
+} | undefined) => () => void, 
+/**
+ * Load the listeners.  Likely you never need to call this, unless
+ * doing a rather deep integration with signal-exit functionality.
+ * Mostly exposed for the benefit of testing.
+ *
+ * @internal
+ */
+load: () => void, 
+/**
+ * Unload the listeners.  Likely you never need to call this, unless
+ * doing a rather deep integration with signal-exit functionality.
+ * Mostly exposed for the benefit of testing.
+ *
+ * @internal
+ */
+unload: () => void;
+//# sourceMappingURL=index.d.ts.map

node_modules/signal-exit/dist/cjs/index.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../src/index.ts"],"names":[],"mappings":";AAIA,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAA;AACtC,OAAO,EAAE,OAAO,EAAE,CAAA;AAuBlB;;;;;;;;;;;;;GAaG;AACH,MAAM,MAAM,OAAO,GAAG,CACpB,IAAI,EAAE,MAAM,GAAG,IAAI,GAAG,SAAS,EAC/B,MAAM,EAAE,MAAM,CAAC,OAAO,GAAG,IAAI,KAC1B,IAAI,GAAG,IAAI,CAAA;AA8QhB,eAAO;AACL;;;;;;;;GAQG;AACH,MAAM,OAzMO,OAAO;;wBAPiD,IAAI;AAkNzE;;;;;;GAMG;AACH,IAAI;AAEJ;;;;;;GAMG;AACH,MAAM,YAGP,CAAA"}

node_modules/signal-exit/dist/cjs/index.js

@@ -0,0 +1,279 @@
+"use strict";
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.unload = exports.load = exports.onExit = exports.signals = void 0;
+// Note: since nyc uses this module to output coverage, any lines
+// that are in the direct sync flow of nyc's outputCoverage are
+// ignored, since we can never get coverage for them.
+// grab a reference to node's real process object right away
+const signals_js_1 = require("./signals.js");
+Object.defineProperty(exports, "signals", { enumerable: true, get: function () { return signals_js_1.signals; } });
+const processOk = (process) => !!process &&
+    typeof process === 'object' &&
+    typeof process.removeListener === 'function' &&
+    typeof process.emit === 'function' &&
+    typeof process.reallyExit === 'function' &&
+    typeof process.listeners === 'function' &&
+    typeof process.kill === 'function' &&
+    typeof process.pid === 'number' &&
+    typeof process.on === 'function';
+const kExitEmitter = Symbol.for('signal-exit emitter');
+const global = globalThis;
+const ObjectDefineProperty = Object.defineProperty.bind(Object);
+// teeny special purpose ee
+class Emitter {
+    emitted = {
+        afterExit: false,
+        exit: false,
+    };
+    listeners = {
+        afterExit: [],
+        exit: [],
+    };
+    count = 0;
+    id = Math.random();
+    constructor() {
+        if (global[kExitEmitter]) {
+            return global[kExitEmitter];
+        }
+        ObjectDefineProperty(global, kExitEmitter, {
+            value: this,
+            writable: false,
+            enumerable: false,
+            configurable: false,
+        });
+    }
+    on(ev, fn) {
+        this.listeners[ev].push(fn);
+    }
+    removeListener(ev, fn) {
+        const list = this.listeners[ev];
+        const i = list.indexOf(fn);
+        /* c8 ignore start */
+        if (i === -1) {
+            return;
+        }
+        /* c8 ignore stop */
+        if (i === 0 && list.length === 1) {
+            list.length = 0;
+        }
+        else {
+            list.splice(i, 1);
+        }
+    }
+    emit(ev, code, signal) {
+        if (this.emitted[ev]) {
+            return false;
+        }
+        this.emitted[ev] = true;
+        let ret = false;
+        for (const fn of this.listeners[ev]) {
+            ret = fn(code, signal) === true || ret;
+        }
+        if (ev === 'exit') {
+            ret = this.emit('afterExit', code, signal) || ret;
+        }
+        return ret;
+    }
+}
+class SignalExitBase {
+}
+const signalExitWrap = (handler) => {
+    return {
+        onExit(cb, opts) {
+            return handler.onExit(cb, opts);
+        },
+        load() {
+            return handler.load();
+        },
+        unload() {
+            return handler.unload();
+        },
+    };
+};
+class SignalExitFallback extends SignalExitBase {
+    onExit() {
+        return () => { };
+    }
+    load() { }
+    unload() { }
+}
+class SignalExit extends SignalExitBase {
+    // "SIGHUP" throws an `ENOSYS` error on Windows,
+    // so use a supported signal instead
+    /* c8 ignore start */
+    #hupSig = process.platform === 'win32' ? 'SIGINT' : 'SIGHUP';
+    /* c8 ignore stop */
+    #emitter = new Emitter();
+    #process;
+    #originalProcessEmit;
+    #originalProcessReallyExit;
+    #sigListeners = {};
+    #loaded = false;
+    constructor(process) {
+        super();
+        this.#process = process;
+        // { <signal>: <listener fn>, ... }
+        this.#sigListeners = {};
+        for (const sig of signals_js_1.signals) {
+            this.#sigListeners[sig] = () => {
+                // If there are no other listeners, an exit is coming!
+                // Simplest way: remove us and then re-send the signal.
+                // We know that this will kill the process, so we can
+                // safely emit now.
+                const listeners = this.#process.listeners(sig);
+                let { count } = this.#emitter;
+                // This is a workaround for the fact that signal-exit v3 and signal
+                // exit v4 are not aware of each other, and each will attempt to let
+                // the other handle it, so neither of them do. To correct this, we
+                // detect if we're the only handler *except* for previous versions
+                // of signal-exit, and increment by the count of listeners it has
+                // created.
+                /* c8 ignore start */
+                const p = process;
+                if (typeof p.__signal_exit_emitter__ === 'object' &&
+                    typeof p.__signal_exit_emitter__.count === 'number') {
+                    count += p.__signal_exit_emitter__.count;
+                }
+                /* c8 ignore stop */
+                if (listeners.length === count) {
+                    this.unload();
+                    const ret = this.#emitter.emit('exit', null, sig);
+                    /* c8 ignore start */
+                    const s = sig === 'SIGHUP' ? this.#hupSig : sig;
+                    if (!ret)
+                        process.kill(process.pid, s);
+                    /* c8 ignore stop */
+                }
+            };
+        }
+        this.#originalProcessReallyExit = process.reallyExit;
+        this.#originalProcessEmit = process.emit;
+    }
+    onExit(cb, opts) {
+        /* c8 ignore start */
+        if (!processOk(this.#process)) {
+            return () => { };
+        }
+        /* c8 ignore stop */
+        if (this.#loaded === false) {
+            this.load();
+        }
+        const ev = opts?.alwaysLast ? 'afterExit' : 'exit';
+        this.#emitter.on(ev, cb);
+        return () => {
+            this.#emitter.removeListener(ev, cb);
+            if (this.#emitter.listeners['exit'].length === 0 &&
+                this.#emitter.listeners['afterExit'].length === 0) {
+                this.unload();
+            }
+        };
+    }
+    load() {
+        if (this.#loaded) {
+            return;
+        }
+        this.#loaded = true;
+        // This is the number of onSignalExit's that are in play.
+        // It's important so that we can count the correct number of
+        // listeners on signals, and don't wait for the other one to
+        // handle it instead of us.
+        this.#emitter.count += 1;
+        for (const sig of signals_js_1.signals) {
+            try {
+                const fn = this.#sigListeners[sig];
+                if (fn)
+                    this.#process.on(sig, fn);
+            }
+            catch (_) { }
+        }
+        this.#process.emit = (ev, ...a) => {
+            return this.#processEmit(ev, ...a);
+        };
+        this.#process.reallyExit = (code) => {
+            return this.#processReallyExit(code);
+        };
+    }
+    unload() {
+        if (!this.#loaded) {
+            return;
+        }
+        this.#loaded = false;
+        signals_js_1.signals.forEach(sig => {
+            const listener = this.#sigListeners[sig];
+            /* c8 ignore start */
+            if (!listener) {
+                throw new Error('Listener not defined for signal: ' + sig);
+            }
+            /* c8 ignore stop */
+            try {
+                this.#process.removeListener(sig, listener);
+                /* c8 ignore start */
+            }
+            catch (_) { }
+            /* c8 ignore stop */
+        });
+        this.#process.emit = this.#originalProcessEmit;
+        this.#process.reallyExit = this.#originalProcessReallyExit;
+        this.#emitter.count -= 1;
+    }
+    #processReallyExit(code) {
+        /* c8 ignore start */
+        if (!processOk(this.#process)) {
+            return 0;
+        }
+        this.#process.exitCode = code || 0;
+        /* c8 ignore stop */
+        this.#emitter.emit('exit', this.#process.exitCode, null);
+        return this.#originalProcessReallyExit.call(this.#process, this.#process.exitCode);
+    }
+    #processEmit(ev, ...args) {
+        const og = this.#originalProcessEmit;
+        if (ev === 'exit' && processOk(this.#process)) {
+            if (typeof args[0] === 'number') {
+                this.#process.exitCode = args[0];
+                /* c8 ignore start */
+            }
+            /* c8 ignore start */
+            const ret = og.call(this.#process, ev, ...args);
+            /* c8 ignore start */
+            this.#emitter.emit('exit', this.#process.exitCode, null);
+            /* c8 ignore stop */
+            return ret;
+        }
+        else {
+            return og.call(this.#process, ev, ...args);
+        }
+    }
+}
+const process = globalThis.process;
+// wrap so that we call the method on the actual handler, without
+// exporting it directly.
+_a = signalExitWrap(processOk(process) ? new SignalExit(process) : new SignalExitFallback()), 
+/**
+ * Called when the process is exiting, whether via signal, explicit
+ * exit, or running out of stuff to do.
+ *
+ * If the global process object is not suitable for instrumentation,
+ * then this will be a no-op.
+ *
+ * Returns a function that may be used to unload signal-exit.
+ */
+exports.onExit = _a.onExit, 
+/**
+ * Load the listeners.  Likely you never need to call this, unless
+ * doing a rather deep integration with signal-exit functionality.
+ * Mostly exposed for the benefit of testing.
+ *
+ * @internal
+ */
+exports.load = _a.load, 
+/**
+ * Unload the listeners.  Likely you never need to call this, unless
+ * doing a rather deep integration with signal-exit functionality.
+ * Mostly exposed for the benefit of testing.
+ *
+ * @internal
+ */
+exports.unload = _a.unload;
+//# sourceMappingURL=index.js.map

node_modules/signal-exit/dist/cjs/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}

node_modules/signal-exit/dist/cjs/signals.d.ts

@@ -0,0 +1,29 @@
+/// <reference types="node" />
+/**
+ * This is not the set of all possible signals.
+ *
+ * It IS, however, the set of all signals that trigger
+ * an exit on either Linux or BSD systems.  Linux is a
+ * superset of the signal names supported on BSD, and
+ * the unknown signals just fail to register, so we can
+ * catch that easily enough.
+ *
+ * Windows signals are a different set, since there are
+ * signals that terminate Windows processes, but don't
+ * terminate (or don't even exist) on Posix systems.
+ *
+ * Don't bother with SIGKILL.  It's uncatchable, which
+ * means that we can't fire any callbacks anyway.
+ *
+ * If a user does happen to register a handler on a non-
+ * fatal signal like SIGWINCH or something, and then
+ * exit, it'll end up firing `process.emit('exit')`, so
+ * the handler will be fired anyway.
+ *
+ * SIGBUS, SIGFPE, SIGSEGV and SIGILL, when not raised
+ * artificially, inherently leave the process in a
+ * state from which it is not safe to try and enter JS
+ * listeners.
+ */
+export declare const signals: NodeJS.Signals[];
+//# sourceMappingURL=signals.d.ts.map

node_modules/signal-exit/dist/cjs/signals.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"signals.d.ts","sourceRoot":"","sources":["../../src/signals.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;;;;;;;;;;;GAyBG;AACH,eAAO,MAAM,OAAO,EAAE,MAAM,CAAC,OAAO,EAAO,CAAA"}

node_modules/signal-exit/dist/cjs/signals.js

@@ -0,0 +1,42 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.signals = void 0;
+/**
+ * This is not the set of all possible signals.
+ *
+ * It IS, however, the set of all signals that trigger
+ * an exit on either Linux or BSD systems.  Linux is a
+ * superset of the signal names supported on BSD, and
+ * the unknown signals just fail to register, so we can
+ * catch that easily enough.
+ *
+ * Windows signals are a different set, since there are
+ * signals that terminate Windows processes, but don't
+ * terminate (or don't even exist) on Posix systems.
+ *
+ * Don't bother with SIGKILL.  It's uncatchable, which
+ * means that we can't fire any callbacks anyway.
+ *
+ * If a user does happen to register a handler on a non-
+ * fatal signal like SIGWINCH or something, and then
+ * exit, it'll end up firing `process.emit('exit')`, so
+ * the handler will be fired anyway.
+ *
+ * SIGBUS, SIGFPE, SIGSEGV and SIGILL, when not raised
+ * artificially, inherently leave the process in a
+ * state from which it is not safe to try and enter JS
+ * listeners.
+ */
+exports.signals = [];
+exports.signals.push('SIGHUP', 'SIGINT', 'SIGTERM');
+if (process.platform !== 'win32') {
+    exports.signals.push('SIGALRM', 'SIGABRT', 'SIGVTALRM', 'SIGXCPU', 'SIGXFSZ', 'SIGUSR2', 'SIGTRAP', 'SIGSYS', 'SIGQUIT', 'SIGIOT'
+    // should detect profiler and enable/disable accordingly.
+    // see #21
+    // 'SIGPROF'
+    );
+}
+if (process.platform === 'linux') {
+    exports.signals.push('SIGIO', 'SIGPOLL', 'SIGPWR', 'SIGSTKFLT');
+}
+//# sourceMappingURL=signals.js.map

node_modules/signal-exit/dist/cjs/signals.js.map

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