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express-server/node_modules/postgresql/index.js

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+const path = require('path');
+const mkdirp = require('mkdirp');
+const emptyDir = require('empty-dir');
+const spawn = require('child_process').spawn;
+
+exports.initdb = function (dbPath, callback) {
+  var opts = {};
+  if (arguments.length === 3) {
+    opts = arguments[1];
+    callback = arguments[2];
+  }
+  if (!dbPath) {
+    throw new Error('You must specify a directory to initialize.');
+  }
+  var dir = path.resolve(dbPath);
+  mkdirp.sync(dir);
+  if (!emptyDir.sync(dir)) {
+    throw new Error('Refusing to init in non-empty directory.');
+  }
+  var init = spawn('./pgsql/bin/initdb', ['-D', dir]);
+  if (opts.verbose === true) {
+    init.stdout.on('data', function (data) {
+      process.stdout.write(data);
+    });
+    init.stderr.on('data', function (data) {
+      process.stderr.write(data.toString());
+    });
+  }
+  init.on('close', function (code) {
+    callback(code);
+  });
+};
+
+exports.start = function (dbPath, opts) {
+  opts = opts || {};
+  var dir = path.resolve(dbPath);
+  var start = spawn('./pgsql/bin/postgres', ['-D', dir]);
+  start.stdout.on('data', function (data) {
+    process.stdout.write(data);
+  });
+  start.stderr.on('data', function (data) {
+    process.stderr.write(data.toString());
+  });
+};