prototype-properties.js

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const nativeErrors = [

    InternalError,

    EvalError,

    RangeError,

    ReferenceError,

    SyntaxError,

    TypeError,

    URIError

];

const expectedOwnKeys = "toSource" in Object.prototype

                        ? "toSource,toString,message,name,stack,constructor"

                        : "toString,message,name,stack,constructor";

assertEq(Reflect.ownKeys(Error.prototype).toString(), expectedOwnKeys);

assertEq(Error.prototype.name, "Error");

assertEq(Error.prototype.message, "");

for (const error of nativeErrors) {

    assertEq(Reflect.ownKeys(error.prototype).toString(), "message,name,constructor");

    assertEq(error.prototype.name, error.name);

    assertEq(error.prototype.message, "");

    assertEq(error.prototype.constructor, error);

if (typeof reportCompare === "function")

    reportCompare(0, 0);