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- /*---------------------------------------------------------------------------------------------
- * Copyright (c) Microsoft Corporation. All rights reserved.
- * Licensed under the MIT License. See License.txt in the project root for license information.
- *--------------------------------------------------------------------------------------------*/
- import { BugIndicatingError, onUnexpectedError } from './errors.js';
- /**
- * Throws an error with the provided message if the provided value does not evaluate to a true Javascript value.
- *
- * @deprecated Use `assert(...)` instead.
- * This method is usually used like this:
- * ```ts
- * import * as assert from 'vs/base/common/assert';
- * assert.ok(...);
- * ```
- *
- * However, `assert` in that example is a user chosen name.
- * There is no tooling for generating such an import statement.
- * Thus, the `assert(...)` function should be used instead.
- */
- export function ok(value, message) {
- if (!value) {
- throw new Error(message ? `Assertion failed (${message})` : 'Assertion Failed');
- }
- }
- export function assertNever(value, message = 'Unreachable') {
- throw new Error(message);
- }
- /**
- * condition must be side-effect free!
- */
- export function assertFn(condition) {
- if (!condition()) {
- // eslint-disable-next-line no-debugger
- debugger;
- // Reevaluate `condition` again to make debugging easier
- condition();
- onUnexpectedError(new BugIndicatingError('Assertion Failed'));
- }
- }
- export function checkAdjacentItems(items, predicate) {
- let i = 0;
- while (i < items.length - 1) {
- const a = items[i];
- const b = items[i + 1];
- if (!predicate(a, b)) {
- return false;
- }
- i++;
- }
- return true;
- }
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