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20 lines
530 B
TypeScript
20 lines
530 B
TypeScript
/**
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* Unique symbol to mark Frame instances.
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*
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* We use a symbol because in some cases importing the Frame to do
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* instanceof checks introduces circular references.
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*
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* Having the symbol in it's own file prevents any potential circular
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* references and allows checking if an object is a frame
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*/
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export const FRAME_SYMBOL = Symbol('FRAME_SYMBOL');
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/**
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* Helper to determine if the passed object is a Frame
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*
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* @param object
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*/
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export function isFrame(object: any) {
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return object && object[FRAME_SYMBOL] === true;
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}
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