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'use strict';
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require('../common');
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const EventEmitter = require('events');
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const assert = require('assert');
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const EE = new EventEmitter();
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// Do not use common.noop here, these need to be separate listener functions
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const m = () => {};
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EE.on('foo', () => {});
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assert.deepStrictEqual(['foo'], EE.eventNames());
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EE.on('bar', m);
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assert.deepStrictEqual(['foo', 'bar'], EE.eventNames());
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EE.removeListener('bar', m);
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assert.deepStrictEqual(['foo'], EE.eventNames());
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const s = Symbol('s');
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EE.on(s, m);
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assert.deepStrictEqual(['foo', s], EE.eventNames());
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EE.removeListener(s, m);
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assert.deepStrictEqual(['foo'], EE.eventNames());
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