14 lines
320 B
JavaScript
14 lines
320 B
JavaScript
'use strict'
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module.exports = function isPromise (val) {
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return (
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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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}
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