12 lines
343 B
JavaScript
12 lines
343 B
JavaScript
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'use strict';
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module.exports = function isPromise(val) {
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return (val &&
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val.then &&
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val.then instanceof Function &&
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val.constructor &&
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val.constructor.reject &&
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val.constructor.reject instanceof Function &&
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val.constructor.resolve &&
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val.constructor.resolve instanceof Function);
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};
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