29 lines
749 B
JavaScript
29 lines
749 B
JavaScript
exports.createPromiseCallback = createPromiseCallback;
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function createPromiseCallback() {
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var cb;
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if (!global.Promise) {
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cb = function() {};
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cb.promise = {};
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Object.defineProperty(cb.promise, 'then', { get: throwPromiseNotDefined });
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Object.defineProperty(cb.promise, 'catch', { get: throwPromiseNotDefined });
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return cb;
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}
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var promise = new global.Promise(function(resolve, reject) {
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cb = function(err, data) {
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if (err) return reject(err);
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return resolve(data);
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};
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});
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cb.promise = promise;
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return cb;
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}
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function throwPromiseNotDefined() {
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throw new Error(
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'Your Node runtime does support ES6 Promises. ' +
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'Set "global.Promise" to your preferred implementation of promises.');
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}
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