jjs> Function("return function (x) { return true } ( /x/ ) >> window;");
Compiling threw: java.lang.AssertionError: boolean is not an integer or long
java.lang.AssertionError: boolean is not an integer or long
    at jdk.nashorn.internal.codegen.MethodEmitter.popInteger(MethodEmitter.java:269)
    at jdk.nashorn.internal.codegen.MethodEmitter.sar(MethodEmitter.java:581)
    at jdk.nashorn.internal.codegen.CodeGenerator$26.op(CodeGenerator.java:2799)
    at jdk.nashorn.internal.codegen.CodeGenerator$BinaryArith.evaluate(CodeGenerator.java:2618)
    at jdk.nashorn.internal.codegen.CodeGenerator.enterSAR(CodeGenerator.java:2801)
    at jdk.nashorn.internal.ir.visitor.NodeOperatorVisitor.enterBinaryNode(NodeOperatorVisitor.java:185)
    at jdk.nashorn.internal.ir.BinaryNode.accept(BinaryNode.java:164)
    at jdk.nashorn.internal.codegen.CodeGenerator$1.enterDefault(CodeGenerator.java:408)
    at jdk.nashorn.internal.ir.visitor.NodeVisitor.enterBinaryNode(NodeVisitor.java:177)
    at jdk.nashorn.internal.ir.BinaryNode.accept(BinaryNode.java:164)
    at ...