/**

* @license

* Copyright Google LLC All Rights Reserved.

*

* Use of this source code is governed by an MIT-style license that can be

* found in the LICENSE file at https://angular.io/license

*/

import ts from 'typescript';

import {DEFAULT_ERROR_CODE, SOURCE} from './api';

export function error(msg: string): never {

throw new Error(`Internal error: ${msg}`);

}

export function createMessageDiagnostic(messageText: string): ts.Diagnostic {

return {

file: undefined,

start: undefined,

length: undefined,

category: ts.DiagnosticCategory.Message,

messageText,

code: DEFAULT_ERROR_CODE,

source: SOURCE,

};

}

/**

* Strip multiline comment start and end markers from the `commentText` string.

*

* This will also strip the JSDOC comment start marker (`/**`).

*/

export function stripComment(commentText: string): string {

return commentText

.replace(/^\/\*\*?/, '')

.replace(/\*\/$/, '')

.trim();

}