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- // @flow strict
- /**
- * Returns true if the value acts like a Promise, i.e. has a "then" function,
- * otherwise returns false.
- */
- declare function isPromise(value: mixed): boolean %checks(value instanceof
- Promise);
- // eslint-disable-next-line no-redeclare
- export default function isPromise(value) {
- return Boolean(value && typeof value.then === 'function');
- }
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