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1 | /**
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2 | * Tests to see if the object is an ES2015 (ES6) Promise
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3 | * @see {@link https://www.ecma-international.org/ecma-262/6.0/#sec-promise-objects}
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4 | * @param value the object to test
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5 | */
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6 | export function isPromise(value: any): value is PromiseLike<any> {
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7 | return !!value && typeof (<any>value).subscribe !== 'function' && typeof (value as any).then === 'function';
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8 | }
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