295d1ea016
Classes cannot be instantiated without new, but util.deprecate() uses Function.prototype.apply(). This commit uses new.target to detect constructor calls, allowing classes to be deprecated. PR-URL: https://github.com/nodejs/node/pull/7690 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Michaël Zasso <mic.besace@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
19 lines
410 B
JavaScript
19 lines
410 B
JavaScript
const util = require('util');
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const assert = require('assert');
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class deprecatedClass {
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}
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const deprecated = util.deprecate(deprecatedClass, 'deprecatedClass is deprecated.');
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class subclass extends deprecated {
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constructor() {
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super();
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}
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}
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const instance = new subclass();
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assert(instance instanceof subclass);
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assert(instance instanceof deprecated);
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assert(instance instanceof deprecatedClass);
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