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26 lines
668 B
JavaScript
26 lines
668 B
JavaScript
/* eslint-disable no-param-reassign */
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'use strict';
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const timer = require('./timer');
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// wrapTimer keeps track of the timing of a async operation and emits
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// a event on the given eventBus once the operation is complete
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//
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// the returned function is designed to be used as a .then(<func>) argument.
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// It transparently passes the data to the following .then(<func>)
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//
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// usage: promise.then(wrapTimer(bus, type, { payload: 'ok' }))
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const wrapTimer = (eventBus, event, args = {}) => {
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const t = timer.new();
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return data => {
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args.time = t();
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eventBus.emit(event, args);
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return data;
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};
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};
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module.exports = {
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wrapTimer,
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};
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