mirror of https://gitee.com/openkylin/nodejs.git
19 lines
558 B
JavaScript
19 lines
558 B
JavaScript
'use strict';
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require('../common');
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const assert = require('assert');
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const EventEmitter = require('events');
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const emitter = new EventEmitter();
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emitter.on('foo', () => {});
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emitter.on('foo', () => {});
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emitter.on('baz', () => {});
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// Allow any type
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emitter.on(123, () => {});
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assert.strictEqual(EventEmitter.listenerCount(emitter, 'foo'), 2);
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assert.strictEqual(emitter.listenerCount('foo'), 2);
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assert.strictEqual(emitter.listenerCount('bar'), 0);
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assert.strictEqual(emitter.listenerCount('baz'), 1);
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assert.strictEqual(emitter.listenerCount(123), 1);
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