| 1 | 'use strict';
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| 2 | const merge = require('./merge');
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| 3 | const knownHookEvents = require('./known-hook-events');
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| 4 |
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| 5 | module.exports = (instances, methods) => {
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| 6 | const handlers = instances.map(instance => instance.defaults.handler);
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| 7 | const size = instances.length - 1;
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| 8 |
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| 9 | let options = {};
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| 10 | const hooks = {};
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| 11 | for (const instance of instances) {
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| 12 | options = merge({}, options, instance.defaults.options);
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| 13 |
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| 14 | const instanceHooks = instance.defaults.options.hooks;
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| 15 | for (const name of knownHookEvents) {
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| 16 | if (hooks[name]) {
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| 17 | hooks[name] = hooks[name].concat(instanceHooks[name]);
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| 18 | } else {
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| 19 | hooks[name] = [...instanceHooks[name]];
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| 20 | }
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| 21 | }
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| 22 | }
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| 23 |
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| 24 | options.hooks = hooks;
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| 25 |
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| 26 | return {
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| 27 | methods,
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| 28 | options,
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| 29 | handler: (options, next) => {
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| 30 | let iteration = -1;
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| 31 | const iterate = options => handlers[++iteration](options, iteration === size ? next : iterate);
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| 32 |
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| 33 | return iterate(options);
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| 34 | }
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| 35 | };
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| 36 | };
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