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express-server/node_modules/cross-spawn/lib/enoent.js

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+'use strict';
+
+var isWin = process.platform === 'win32';
+var resolveCommand = require('./util/resolveCommand');
+
+var isNode10 = process.version.indexOf('v0.10.') === 0;
+
+function notFoundError(command, syscall) {
+    var err;
+
+    err = new Error(syscall + ' ' + command + ' ENOENT');
+    err.code = err.errno = 'ENOENT';
+    err.syscall = syscall + ' ' + command;
+
+    return err;
+}
+
+function hookChildProcess(cp, parsed) {
+    var originalEmit;
+
+    if (!isWin) {
+        return;
+    }
+
+    originalEmit = cp.emit;
+    cp.emit = function (name, arg1) {
+        var err;
+
+        // If emitting "exit" event and exit code is 1, we need to check if
+        // the command exists and emit an "error" instead
+        // See: https://github.com/IndigoUnited/node-cross-spawn/issues/16
+        if (name === 'exit') {
+            err = verifyENOENT(arg1, parsed, 'spawn');
+
+            if (err) {
+                return originalEmit.call(cp, 'error', err);
+            }
+        }
+
+        return originalEmit.apply(cp, arguments);
+    };
+}
+
+function verifyENOENT(status, parsed) {
+    if (isWin && status === 1 && !parsed.file) {
+        return notFoundError(parsed.original, 'spawn');
+    }
+
+    return null;
+}
+
+function verifyENOENTSync(status, parsed) {
+    if (isWin && status === 1 && !parsed.file) {
+        return notFoundError(parsed.original, 'spawnSync');
+    }
+
+    // If we are in node 10, then we are using spawn-sync; if it exited
+    // with -1 it probably means that the command does not exist
+    if (isNode10 && status === -1) {
+        parsed.file = isWin ? parsed.file : resolveCommand(parsed.original);
+
+        if (!parsed.file) {
+            return notFoundError(parsed.original, 'spawnSync');
+        }
+    }
+
+    return null;
+}
+
+module.exports.hookChildProcess = hookChildProcess;
+module.exports.verifyENOENT = verifyENOENT;
+module.exports.verifyENOENTSync = verifyENOENTSync;
+module.exports.notFoundError = notFoundError;

express-server/node_modules/cross-spawn/lib/parse.js

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+'use strict';
+
+var resolveCommand = require('./util/resolveCommand');
+var hasEmptyArgumentBug = require('./util/hasEmptyArgumentBug');
+var escapeArgument = require('./util/escapeArgument');
+var escapeCommand = require('./util/escapeCommand');
+var readShebang = require('./util/readShebang');
+
+var isWin = process.platform === 'win32';
+var skipShellRegExp = /\.(?:com|exe)$/i;
+
+// Supported in Node >= 6 and >= 4.8
+var supportsShellOption = parseInt(process.version.substr(1).split('.')[0], 10) >= 6 ||
+ parseInt(process.version.substr(1).split('.')[0], 10) === 4 && parseInt(process.version.substr(1).split('.')[1], 10) >= 8;
+
+function parseNonShell(parsed) {
+    var shebang;
+    var needsShell;
+    var applyQuotes;
+
+    if (!isWin) {
+        return parsed;
+    }
+
+    // Detect & add support for shebangs
+    parsed.file = resolveCommand(parsed.command);
+    parsed.file = parsed.file || resolveCommand(parsed.command, true);
+    shebang = parsed.file && readShebang(parsed.file);
+
+    if (shebang) {
+        parsed.args.unshift(parsed.file);
+        parsed.command = shebang;
+        needsShell = hasEmptyArgumentBug || !skipShellRegExp.test(resolveCommand(shebang) || resolveCommand(shebang, true));
+    } else {
+        needsShell = hasEmptyArgumentBug || !skipShellRegExp.test(parsed.file);
+    }
+
+    // If a shell is required, use cmd.exe and take care of escaping everything correctly
+    if (needsShell) {
+        // Escape command & arguments
+        applyQuotes = (parsed.command !== 'echo');  // Do not quote arguments for the special "echo" command
+        parsed.command = escapeCommand(parsed.command);
+        parsed.args = parsed.args.map(function (arg) {
+            return escapeArgument(arg, applyQuotes);
+        });
+
+        // Make use of cmd.exe
+        parsed.args = ['/d', '/s', '/c', '"' + parsed.command + (parsed.args.length ? ' ' + parsed.args.join(' ') : '') + '"'];
+        parsed.command = process.env.comspec || 'cmd.exe';
+        parsed.options.windowsVerbatimArguments = true;  // Tell node's spawn that the arguments are already escaped
+    }
+
+    return parsed;
+}
+
+function parseShell(parsed) {
+    var shellCommand;
+
+    // If node supports the shell option, there's no need to mimic its behavior
+    if (supportsShellOption) {
+        return parsed;
+    }
+
+    // Mimic node shell option, see: https://github.com/nodejs/node/blob/b9f6a2dc059a1062776133f3d4fd848c4da7d150/lib/child_process.js#L335
+    shellCommand = [parsed.command].concat(parsed.args).join(' ');
+
+    if (isWin) {
+        parsed.command = typeof parsed.options.shell === 'string' ? parsed.options.shell : process.env.comspec || 'cmd.exe';
+        parsed.args = ['/d', '/s', '/c', '"' + shellCommand + '"'];
+        parsed.options.windowsVerbatimArguments = true;  // Tell node's spawn that the arguments are already escaped
+    } else {
+        if (typeof parsed.options.shell === 'string') {
+            parsed.command = parsed.options.shell;
+        } else if (process.platform === 'android') {
+            parsed.command = '/system/bin/sh';
+        } else {
+            parsed.command = '/bin/sh';
+        }
+
+        parsed.args = ['-c', shellCommand];
+    }
+
+    return parsed;
+}
+
+// ------------------------------------------------
+
+function parse(command, args, options) {
+    var parsed;
+
+    // Normalize arguments, similar to nodejs
+    if (args && !Array.isArray(args)) {
+        options = args;
+        args = null;
+    }
+
+    args = args ? args.slice(0) : [];  // Clone array to avoid changing the original
+    options = options || {};
+
+    // Build our parsed object
+    parsed = {
+        command: command,
+        args: args,
+        options: options,
+        file: undefined,
+        original: command,
+    };
+
+    // Delegate further parsing to shell or non-shell
+    return options.shell ? parseShell(parsed) : parseNonShell(parsed);
+}
+
+module.exports = parse;

express-server/node_modules/cross-spawn/lib/util/escapeArgument.js

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+'use strict';
+
+function escapeArgument(arg, quote) {
+    // Convert to string
+    arg = '' + arg;
+
+    // If we are not going to quote the argument,
+    // escape shell metacharacters, including double and single quotes:
+    if (!quote) {
+        arg = arg.replace(/([()%!^<>&|;,"'\s])/g, '^$1');
+    } else {
+        // Sequence of backslashes followed by a double quote:
+        // double up all the backslashes and escape the double quote
+        arg = arg.replace(/(\\*)"/g, '$1$1\\"');
+
+        // Sequence of backslashes followed by the end of the string
+        // (which will become a double quote later):
+        // double up all the backslashes
+        arg = arg.replace(/(\\*)$/, '$1$1');
+
+        // All other backslashes occur literally
+
+        // Quote the whole thing:
+        arg = '"' + arg + '"';
+    }
+
+    return arg;
+}
+
+module.exports = escapeArgument;

express-server/node_modules/cross-spawn/lib/util/escapeCommand.js

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+'use strict';
+
+var escapeArgument = require('./escapeArgument');
+
+function escapeCommand(command) {
+    // Do not escape if this command is not dangerous..
+    // We do this so that commands like "echo" or "ifconfig" work
+    // Quoting them, will make them unaccessible
+    return /^[a-z0-9_-]+$/i.test(command) ? command : escapeArgument(command, true);
+}
+
+module.exports = escapeCommand;

express-server/node_modules/cross-spawn/lib/util/hasEmptyArgumentBug.js

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+'use strict';
+
+// See: https://github.com/IndigoUnited/node-cross-spawn/pull/34#issuecomment-221623455
+function hasEmptyArgumentBug() {
+    var nodeVer;
+
+    if (process.platform !== 'win32') {
+        return false;
+    }
+
+    nodeVer = process.version.substr(1).split('.').map(function (num) {
+        return parseInt(num, 10);
+    });
+
+    return (nodeVer[0] === 0 && nodeVer[1] < 12);
+}
+
+module.exports = hasEmptyArgumentBug();

express-server/node_modules/cross-spawn/lib/util/readShebang.js

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+'use strict';
+
+var fs = require('fs');
+var LRU = require('lru-cache');
+var shebangCommand = require('shebang-command');
+
+var shebangCache = new LRU({ max: 50, maxAge: 30 * 1000 });  // Cache just for 30sec
+
+function readShebang(command) {
+    var buffer;
+    var fd;
+    var shebang;
+
+    // Check if it is in the cache first
+    if (shebangCache.has(command)) {
+        return shebangCache.get(command);
+    }
+
+    // Read the first 150 bytes from the file
+    buffer = new Buffer(150);
+
+    try {
+        fd = fs.openSync(command, 'r');
+        fs.readSync(fd, buffer, 0, 150, 0);
+        fs.closeSync(fd);
+    } catch (e) { /* empty */ }
+
+    // Attempt to extract shebang (null is returned if not a shebang)
+    shebang = shebangCommand(buffer.toString());
+
+    // Store the shebang in the cache
+    shebangCache.set(command, shebang);
+
+    return shebang;
+}
+
+module.exports = readShebang;

express-server/node_modules/cross-spawn/lib/util/resolveCommand.js

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+'use strict';
+
+var path = require('path');
+var which = require('which');
+var LRU = require('lru-cache');
+
+var commandCache = new LRU({ max: 50, maxAge: 30 * 1000 });  // Cache just for 30sec
+
+function resolveCommand(command, noExtension) {
+    var resolved;
+
+    noExtension = !!noExtension;
+    resolved = commandCache.get(command + '!' + noExtension);
+
+    // Check if its resolved in the cache
+    if (commandCache.has(command)) {
+        return commandCache.get(command);
+    }
+
+    try {
+        resolved = !noExtension ?
+            which.sync(command) :
+            which.sync(command, { pathExt: path.delimiter + (process.env.PATHEXT || '') });
+    } catch (e) { /* empty */ }
+
+    commandCache.set(command + '!' + noExtension, resolved);
+
+    return resolved;
+}
+
+module.exports = resolveCommand;