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35 lines
1.1 KiB
35 lines
1.1 KiB
import { log } from "./logging.js";
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/* I can't believe I have to write this just so I can use the assert that should be standard in every javascript. */
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class AssertionError extends Error {
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/* This is from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error
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* which claims you have to do this weird stuff to make your error actually work.
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*/
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constructor(foo = 'bar', ...params) {
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// Pass remaining arguments (including vendor specific ones) to parent constructor
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super(...params);
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// Maintains proper stack trace for where our error was thrown (only available on V8)
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if (Error.captureStackTrace) {
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// this "only on V8" is managed by the Error.captureStackTrace test above
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Error.captureStackTrace(this, AssertionError);
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}
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this.name = 'AssertionError';
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// Custom debugging information
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this.foo = foo;
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this.date = new Date();
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}
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}
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const assert = (test, message) => {
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log.assert(test, message);
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if(!test) {
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throw new AssertionError(message);
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}
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}
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export default assert;
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