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express-server/node_modules/pg/lib/index.js

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+'use strict'
+/**
+ * Copyright (c) 2010-2017 Brian Carlson (brian.m.carlson@gmail.com)
+ * All rights reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * README.md file in the root directory of this source tree.
+ */
+
+var util = require('util')
+var Client = require('./client')
+var defaults = require('./defaults')
+var Connection = require('./connection')
+var Pool = require('pg-pool')
+
+const poolFactory = (Client) => {
+  var BoundPool = function (options) {
+    var config = Object.assign({ Client: Client }, options)
+    return new Pool(config)
+  }
+
+  util.inherits(BoundPool, Pool)
+
+  return BoundPool
+}
+
+var PG = function (clientConstructor) {
+  this.defaults = defaults
+  this.Client = clientConstructor
+  this.Query = this.Client.Query
+  this.Pool = poolFactory(this.Client)
+  this._pools = []
+  this.Connection = Connection
+  this.types = require('pg-types')
+}
+
+if (typeof process.env.NODE_PG_FORCE_NATIVE !== 'undefined') {
+  module.exports = new PG(require('./native'))
+} else {
+  module.exports = new PG(Client)
+
+  // lazy require native module...the native module may not have installed
+  module.exports.__defineGetter__('native', function () {
+    delete module.exports.native
+    var native = null
+    try {
+      native = new PG(require('./native'))
+    } catch (err) {
+      if (err.code !== 'MODULE_NOT_FOUND') {
+        throw err
+      }
+      console.error(err.message)
+    }
+    module.exports.native = native
+    return native
+  })
+}