/
no-invalid-regexp.js
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/
no-invalid-regexp.js
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/**
* @fileoverview Validate strings passed to the RegExp constructor
* @author Michael Ficarra
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-invalid-regexp"),
RuleTester = require("../../../lib/testers/rule-tester");
const ruleTester = new RuleTester();
ruleTester.run("no-invalid-regexp", rule, {
valid: [
"RegExp('')",
"RegExp()",
"RegExp('.', 'g')",
"new RegExp('.')",
"new RegExp",
"new RegExp('.', 'im')",
"global.RegExp('\\\\')",
"new RegExp('.', y)",
{ code: "new RegExp('.', 'y')", options: [{ allowConstructorFlags: ["y"] }] },
{ code: "new RegExp('.', 'u')", options: [{ allowConstructorFlags: ["U"] }] },
{ code: "new RegExp('.', 'yu')", options: [{ allowConstructorFlags: ["y", "u"] }] },
{ code: "new RegExp('/', 'yu')", options: [{ allowConstructorFlags: ["y", "u"] }] },
{ code: "new RegExp('\\/', 'yu')", options: [{ allowConstructorFlags: ["y", "u"] }] },
{ code: "new RegExp('.', 'y')", parserOptions: { ecmaVersion: 6 } },
{ code: "new RegExp('.', 'u')", parserOptions: { ecmaVersion: 6 } },
{ code: "new RegExp('.', 'yu')", parserOptions: { ecmaVersion: 6 } },
{ code: "new RegExp('/', 'yu')", parserOptions: { ecmaVersion: 6 } },
{ code: "new RegExp('\\/', 'yu')", parserOptions: { ecmaVersion: 6 } },
{ code: "new RegExp('\\\\u{65}', 'u')", parserOptions: { ecmaVersion: 2015 } },
{ code: "new RegExp('[\\\\u{0}-\\\\u{1F}]', 'u')", parserOptions: { ecmaVersion: 2015 } },
{ code: "new RegExp('.', 's')", parserOptions: { ecmaVersion: 2018 } },
{ code: "new RegExp('(?<=a)b')", parserOptions: { ecmaVersion: 2018 } },
{ code: "new RegExp('(?<!a)b')", parserOptions: { ecmaVersion: 2018 } },
{ code: "new RegExp('(?<a>b)\\k<a>')", parserOptions: { ecmaVersion: 2018 } },
{ code: "new RegExp('(?<a>b)\\k<a>', 'u')", parserOptions: { ecmaVersion: 2018 } },
{ code: "new RegExp('\\\\p{Letter}', 'u')", parserOptions: { ecmaVersion: 2018 } }
],
invalid: [
{ code: "RegExp('[');", errors: [{ message: "Invalid regular expression: /[/: Unterminated character class.", type: "CallExpression" }] },
{ code: "RegExp('.', 'z');", errors: [{ message: "Invalid flags supplied to RegExp constructor 'z'.", type: "CallExpression" }] },
{ code: "new RegExp(')');", errors: [{ message: "Invalid regular expression: /)/: Unmatched ')'.", type: "NewExpression" }] },
// https://github.com/eslint/eslint/issues/10861
{
code: String.raw`new RegExp('\\');`,
errors: [{ message: "Invalid regular expression: /\\/: \\ at end of pattern.", type: "NewExpression" }]
}
]
});