From 06f4041c4c15559d5b19aedde6b389c404955490 Mon Sep 17 00:00:00 2001
From: Rami Moshe <rami.moshe@jivesoftware.com>
Date: Sat, 23 Sep 2017 01:40:37 -0400
Subject: [PATCH] querystring: convert to using internal/errors

PR-URL: https://github.com/nodejs/node/pull/15565
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
---
 doc/api/errors.md                        |  5 +++++
 lib/internal/errors.js                   |  2 ++
 lib/querystring.js                       | 12 +++++++-----
 test/parallel/test-querystring-escape.js | 13 ++++++++++---
 test/parallel/test-querystring.js        | 13 +++++++++----
 5 files changed, 33 insertions(+), 12 deletions(-)

diff --git a/doc/api/errors.md b/doc/api/errors.md
index fcc39ab2ac..498fc856ad 100644
--- a/doc/api/errors.md
+++ b/doc/api/errors.md
@@ -1116,6 +1116,11 @@ API] [`URLSearchParams` constructor][`new URLSearchParams(iterable)`] does not
 represent a `[name, value]` tuple – that is, if an element is not iterable, or
 does not consist of exactly two elements.
 
+<a id="ERR_INVALID_URI"></a>
+### ERR_INVALID_URI
+
+Used when an invalid URI is passed.
+
 <a id="ERR_INVALID_URL"></a>
 ### ERR_INVALID_URL
 
diff --git a/lib/internal/errors.js b/lib/internal/errors.js
index 6b647ee522..faeb76e9ba 100644
--- a/lib/internal/errors.js
+++ b/lib/internal/errors.js
@@ -126,6 +126,7 @@ module.exports = exports = {
   Error: makeNodeError(Error),
   TypeError: makeNodeError(TypeError),
   RangeError: makeNodeError(RangeError),
+  URIError: makeNodeError(URIError),
   AssertionError,
   E // This is exported only to facilitate testing.
 };
@@ -287,6 +288,7 @@ E('ERR_INVALID_SYNC_FORK_INPUT',
   'Asynchronous forks do not support Buffer, Uint8Array or string input: %s');
 E('ERR_INVALID_THIS', 'Value of "this" must be of type %s');
 E('ERR_INVALID_TUPLE', '%s must be an iterable %s tuple');
+E('ERR_INVALID_URI', 'URI malformed');
 E('ERR_INVALID_URL', 'Invalid URL: %s');
 E('ERR_INVALID_URL_SCHEME',
   (expected) => `The URL must be ${oneOf(expected, 'scheme')}`);
diff --git a/lib/querystring.js b/lib/querystring.js
index 936b7463c9..ec6ad51a89 100644
--- a/lib/querystring.js
+++ b/lib/querystring.js
@@ -24,6 +24,7 @@
 'use strict';
 
 const { Buffer } = require('buffer');
+const errors = require('internal/errors');
 const {
   hexTable,
   isHexTable
@@ -174,11 +175,12 @@ function qsEscape(str) {
     }
     // Surrogate pair
     ++i;
-    var c2;
-    if (i < str.length)
-      c2 = str.charCodeAt(i) & 0x3FF;
-    else
-      throw new URIError('URI malformed');
+
+    if (i >= str.length)
+      throw new errors.URIError('ERR_INVALID_URI');
+
+    var c2 = str.charCodeAt(i) & 0x3FF;
+
     lastPos = i + 1;
     c = 0x10000 + (((c & 0x3FF) << 10) | c2);
     out += hexTable[0xF0 | (c >> 18)] +
diff --git a/test/parallel/test-querystring-escape.js b/test/parallel/test-querystring-escape.js
index fd20a8424f..18bece1ab1 100644
--- a/test/parallel/test-querystring-escape.js
+++ b/test/parallel/test-querystring-escape.js
@@ -1,5 +1,5 @@
 'use strict';
-require('../common');
+const common = require('../common');
 const assert = require('assert');
 
 const qs = require('querystring');
@@ -12,8 +12,15 @@ assert.deepStrictEqual(qs.escape('Ŋōđĕ'), '%C5%8A%C5%8D%C4%91%C4%95');
 assert.deepStrictEqual(qs.escape('testŊōđĕ'), 'test%C5%8A%C5%8D%C4%91%C4%95');
 assert.deepStrictEqual(qs.escape(`${String.fromCharCode(0xD800 + 1)}test`),
                        '%F0%90%91%B4est');
-assert.throws(() => qs.escape(String.fromCharCode(0xD800 + 1)),
-              /^URIError: URI malformed$/);
+
+common.expectsError(
+  () => qs.escape(String.fromCharCode(0xD800 + 1)),
+  {
+    code: 'ERR_INVALID_URI',
+    type: URIError,
+    message: 'URI malformed'
+  }
+);
 
 // using toString for objects
 assert.strictEqual(
diff --git a/test/parallel/test-querystring.js b/test/parallel/test-querystring.js
index ed0138e079..400431fd2c 100644
--- a/test/parallel/test-querystring.js
+++ b/test/parallel/test-querystring.js
@@ -20,7 +20,7 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 'use strict';
-require('../common');
+const common = require('../common');
 const assert = require('assert');
 const inspect = require('util').inspect;
 
@@ -271,9 +271,14 @@ qsWeirdObjects.forEach(function(testCase) {
 });
 
 // invalid surrogate pair throws URIError
-assert.throws(function() {
-  qs.stringify({ foo: '\udc00' });
-}, /^URIError: URI malformed$/);
+common.expectsError(
+  () => qs.stringify({ foo: '\udc00' }),
+  {
+    code: 'ERR_INVALID_URI',
+    type: URIError,
+    message: 'URI malformed'
+  }
+);
 
 // coerce numbers to string
 assert.strictEqual('foo=0', qs.stringify({ foo: 0 }));