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undefined check to merge default (#1654)

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Gus Caplan
2017-07-03 20:48:20 -05:00
committed by Crawl
parent b1d9084345
commit e57bfc9313
1 changed files with 1 additions and 1 deletions
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2
src/util/Util.js
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@@ -128,7 +128,7 @@ class Util {
static mergeDefault(def, given) {
if (!given) return def;
for (const key in def) {
if (!{}.hasOwnProperty.call(given, key)) {
if (!{}.hasOwnProperty.call(given, key) && def[key] !== undefined) {
given[key] = def[key];
} else if (given[key] === Object(given[key])) {
given[key] = this.mergeDefault(def[key], given[key]);