Puppeteer: Prototype JSHandle must not be referencing primitive value

queryObjects receives a primitive rather than an object prototype handle.

Error message

Prototype JSHandle must not be referencing primitive value

How this error happens

A number handle is a primitive value, not an object prototype. queryObjects requires a browser object reference.

The snippets use an open Puppeteer page named page.

const primitive = await page.evaluateHandle(() => {
    return 42;
});

await page.queryObjects(
    primitive
);

How to fix

Create a handle to the actual object prototype you want to query.

const prototype = await page.evaluateHandle(() => {
    return Array.prototype;
});

try {
    const objects = await page.queryObjects(
        prototype
    );

    await objects.dispose();
} finally {
    await prototype.dispose();
}

Things to keep in mind

Dispose the primitive handle from the failing example as well. Query results depend on which objects are currently retained in the browser heap.

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