Commit iniziale

node_modules/mssql/lib/shared.js

@@ -0,0 +1,120 @@
+'use strict'
+
+const TYPES = require('./datatypes').TYPES
+const Table = require('./table')
+
+let PromiseLibrary = Promise
+const driver = {}
+const map = []
+
+/**
+ * Register you own type map.
+ *
+ * @path module.exports.map
+ * @param {*} jstype JS data type.
+ * @param {*} sqltype SQL data type.
+ */
+
+map.register = function (jstype, sqltype) {
+  for (let index = 0; index < this.length; index++) {
+    const item = this[index]
+    if (item.js === jstype) {
+      this.splice(index, 1)
+      break
+    }
+  }
+
+  this.push({
+    js: jstype,
+    sql: sqltype
+  })
+
+  return null
+}
+
+map.register(String, TYPES.NVarChar)
+map.register(Number, TYPES.Int)
+map.register(Boolean, TYPES.Bit)
+map.register(Date, TYPES.DateTime)
+map.register(Buffer, TYPES.VarBinary)
+map.register(Table, TYPES.TVP)
+
+/**
+ * @ignore
+ */
+
+const getTypeByValue = function (value) {
+  if ((value === null) || (value === undefined)) { return TYPES.NVarChar }
+
+  switch (typeof value) {
+    case 'string':
+      for (const item of Array.from(map)) {
+        if (item.js === String) {
+          return item.sql
+        }
+      }
+
+      return TYPES.NVarChar
+
+    case 'number':
+      if (value % 1 === 0) {
+        if (value < -2147483648 || value > 2147483647) {
+          return TYPES.BigInt
+        } else {
+          return TYPES.Int
+        }
+      } else {
+        return TYPES.Float
+      }
+
+    case 'bigint':
+      if (value < -2147483648n || value > 2147483647n) {
+        return TYPES.BigInt
+      } else {
+        return TYPES.Int
+      }
+
+    case 'boolean':
+      for (const item of Array.from(map)) {
+        if (item.js === Boolean) {
+          return item.sql
+        }
+      }
+
+      return TYPES.Bit
+
+    case 'object':
+      for (const item of Array.from(map)) {
+        if (value instanceof item.js) {
+          return item.sql
+        }
+      }
+
+      return TYPES.NVarChar
+
+    default:
+      return TYPES.NVarChar
+  }
+}
+
+module.exports = {
+  driver,
+  getTypeByValue,
+  map
+}
+
+Object.defineProperty(module.exports, 'Promise', {
+  get: () => {
+    return PromiseLibrary
+  },
+  set: (value) => {
+    PromiseLibrary = value
+  }
+})
+
+Object.defineProperty(module.exports, 'valueHandler', {
+  enumerable: true,
+  value: new Map(),
+  writable: false,
+  configurable: false
+})