Add typings for sqlstring

types/sqlstring/sqlstring-tests.ts

@@ -0,0 +1,31 @@
+import * as SqlString from "sqlstring";
+
+// Code samples taken from:
+// https://github.com/mysqljs/sqlstring/blob/master/README.md
+
+const userId = "some user provided value";
+const sql1 = "SELECT * FROM users WHERE id = " + SqlString.escape(userId);
+
+const userId2 = 1;
+const sql2 = SqlString.format("SELECT * FROM users WHERE id = ?", [userId2]);
+
+const userId3 = 1;
+const sql3 = SqlString.format(
+  "UPDATE users SET foo = ?, bar = ?, baz = ? WHERE id = ?",
+  ["a", "b", "c", userId3],
+);
+
+const post = { id: 1, title: "Hello MySQL" };
+const sql4 = SqlString.format("INSERT INTO posts SET ?", post);
+
+const sorter = "date";
+const sql5 =
+  "SELECT * FROM posts ORDER BY " + SqlString.escapeId("posts." + sorter);
+
+const sorter2 = "date.2";
+const sql6 =
+  "SELECT * FROM posts ORDER BY " + SqlString.escapeId(sorter2, true);
+
+const userId4 = 1;
+const inserts = ["users", "id", userId4];
+const sql7 = SqlString.format("SELECT * FROM ?? WHERE ?? = ?", inserts);