15 lines
420 B
JavaScript
15 lines
420 B
JavaScript
(function (child, parent) {
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if (typeof parent !== "function" && parent !== null) {
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throw new TypeError("Super expression must either be null or a function, not " + typeof parent);
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}
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child.prototype = Object.create(parent && parent.prototype, {
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constructor: {
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value: child,
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enumerable: false,
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writable: true,
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configurable: true
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}
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});
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if (parent) child.__proto__ = parent;
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})
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