trxcllnt commented on a change in pull request #8216:
URL: https://github.com/apache/arrow/pull/8216#discussion_r492263771
##########
File path: js/test/Arrow.ts
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@@ -27,6 +27,13 @@ require('web-stream-tools');
(<any> global).window = (<any> global).window || global;
// Fix for Jest in node v10.x
+Object.defineProperty(Object, Symbol.hasInstance, {
+ writable: true,
+ configurable: true,
+ value(inst: any) {
+ return inst && inst.constructor && inst.constructor.name === 'Object';
+ }
+});
Review comment:
This is a weird one, it only seems to be important for the ES5/UMD
closure-compiler build.
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