mirror of
https://github.com/Microsoft/vscode
synced 2024-08-27 21:09:43 +00:00
![Matt Bierner](/assets/img/avatar_default.png)
Resubmission of #157532 with the following changes: - Use `eslint-plugin-local` instead of `yarn` link to run our plugins - Move our plugins to a top level `.eslintplugin` dir (as required by `eslint-plugin-local`) - Update all names to `local/`
51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
|
|
* Copyright (c) Microsoft Corporation. All rights reserved.
|
|
* Licensed under the MIT License. See License.txt in the project root for license information.
|
|
*--------------------------------------------------------------------------------------------*/
|
|
|
|
import * as eslint from 'eslint';
|
|
import { TSESTree } from '@typescript-eslint/experimental-utils';
|
|
import * as ESTree from 'estree';
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
const _positiveLookBehind = /\(\?<=.+/;
|
|
const _negativeLookBehind = /\(\?<!.+/;
|
|
|
|
function _containsLookBehind(pattern: string | unknown): boolean {
|
|
if (typeof pattern !== 'string') {
|
|
return false;
|
|
}
|
|
return _positiveLookBehind.test(pattern) || _negativeLookBehind.test(pattern);
|
|
}
|
|
|
|
module.exports = {
|
|
|
|
create(context: eslint.Rule.RuleContext) {
|
|
return {
|
|
// /.../
|
|
['Literal[regex]']: (node: any) => {
|
|
type RegexLiteral = TSESTree.Literal & { regex: { pattern: string; flags: string } };
|
|
const pattern = (<RegexLiteral>node).regex?.pattern;
|
|
if (_containsLookBehind(pattern)) {
|
|
context.report({
|
|
node,
|
|
message: 'Look behind assertions are not yet supported in all browsers'
|
|
});
|
|
}
|
|
},
|
|
// new Regex("...")
|
|
['NewExpression[callee.name="RegExp"] Literal']: (node: ESTree.Literal) => {
|
|
if (_containsLookBehind(node.value)) {
|
|
context.report({
|
|
node,
|
|
message: 'Look behind assertions are not yet supported in all browsers'
|
|
});
|
|
}
|
|
}
|
|
};
|
|
}
|
|
};
|