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codeql-action/node_modules/eslint/lib/rules/no-script-url.js
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/** | |
* @fileoverview Rule to flag when using javascript: urls | |
* @author Ilya Volodin | |
*/ | |
/* eslint no-script-url: 0 -- Code is checking to report such URLs */ | |
"use strict"; | |
const astUtils = require("./utils/ast-utils"); | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
/** @type {import('../shared/types').Rule} */ | |
module.exports = { | |
meta: { | |
type: "suggestion", | |
docs: { | |
description: "Disallow `javascript:` urls", | |
recommended: false, | |
url: "https://eslint.org/docs/latest/rules/no-script-url" | |
}, | |
schema: [], | |
messages: { | |
unexpectedScriptURL: "Script URL is a form of eval." | |
} | |
}, | |
create(context) { | |
/** | |
* Check whether a node's static value starts with "javascript:" or not. | |
* And report an error for unexpected script URL. | |
* @param {ASTNode} node node to check | |
* @returns {void} | |
*/ | |
function check(node) { | |
const value = astUtils.getStaticStringValue(node); | |
if (typeof value === "string" && value.toLowerCase().indexOf("javascript:") === 0) { | |
context.report({ node, messageId: "unexpectedScriptURL" }); | |
} | |
} | |
return { | |
Literal(node) { | |
if (node.value && typeof node.value === "string") { | |
check(node); | |
} | |
}, | |
TemplateLiteral(node) { | |
if (!(node.parent && node.parent.type === "TaggedTemplateExpression")) { | |
check(node); | |
} | |
} | |
}; | |
} | |
}; |