[Robustness] stringify: avoid relying on a global undefined (#427)

Connormiha · ljharb · commit cd1874eb1799 · 2021-12-27T22:09:36.000+02:00
diff --git a/lib/stringify.js b/lib/stringify.js
@@ -133,7 +133,7 @@ module.exports = function (object, opts) {
     var obj = object;
     var options = opts || {};
 
-    if (options.encoder !== null && options.encoder !== undefined && typeof options.encoder !== 'function') {
+    if (options.encoder !== null && typeof options.encoder !== 'undefined' && typeof options.encoder !== 'function') {
         throw new TypeError('Encoder has to be a function.');
     }
 

Original file line number	Diff line number	Diff line change
`@@ -133,7 +133,7 @@ module.exports = function (object, opts) {`
`133`	`133`	`var obj = object;`
`134`	`134`	`var options = opts \|\| {};`
`135`	`135`
`136`		`- if (options.encoder !== null && options.encoder !== undefined && typeof options.encoder !== 'function') {`
	`136`	`+ if (options.encoder !== null && typeof options.encoder !== 'undefined' && typeof options.encoder !== 'function') {`
`137`	`137`	`throw new TypeError('Encoder has to be a function.');`
`138`	`138`	`}`
`139`	`139`