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18 lines
472 B
JavaScript
18 lines
472 B
JavaScript
"use strict";
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// FIXME: Package as @validatem/is-instance-of
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const ValidationError = require("@validatem/error");
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module.exports = function isInstanceOf(constructor) {
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if (typeof constructor !== "function") {
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throw new Error(`The constructor or class to validate against, must be a function`);
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}
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return function isInstanceOf(value) {
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if (!(value instanceof constructor)) {
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throw new ValidationError(`Must be an instance of ${constructor.name}`);
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}
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};
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};
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