| 1 | import Promise from 'es6-promise/lib/es6-promise/promise.js';
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| 2 |
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| 3 | // Return the first non-falsy result from an array of
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| 4 | // maybe-sync, maybe-promise-returning functions
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| 5 | export default function first ( candidates ) {
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| 6 | return function ( ...args ) {
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| 7 | return candidates.reduce( ( promise, candidate ) => {
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| 8 | return promise.then( result => result != null ?
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| 9 | result :
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| 10 | Promise.resolve( candidate( ...args ) ) );
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| 11 | }, Promise.resolve() );
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| 12 | }
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| 13 | }
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