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denoland-deno/runtime/js/01_web_util.js

25 lines
623 B
JavaScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
"use strict";
((window) => {
const { TypeError, Symbol } = window.__bootstrap.primordials;
const illegalConstructorKey = Symbol("illegalConstructorKey");
function requiredArguments(
name,
length,
required,
) {
if (length < required) {
const errMsg = `${name} requires at least ${required} argument${
required === 1 ? "" : "s"
}, but only ${length} present`;
throw new TypeError(errMsg);
}
}
window.__bootstrap.webUtil = {
illegalConstructorKey,
requiredArguments,
};
})(this);