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codeql-action/node_modules/eslint/lib/rules/no-func-assign.js
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/** | |
* @fileoverview Rule to flag use of function declaration identifiers as variables. | |
* @author Ian Christian Myers | |
*/ | |
"use strict"; | |
const astUtils = require("./utils/ast-utils"); | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
/** @type {import('../shared/types').Rule} */ | |
module.exports = { | |
meta: { | |
type: "problem", | |
docs: { | |
description: "Disallow reassigning `function` declarations", | |
recommended: true, | |
url: "https://eslint.org/docs/latest/rules/no-func-assign" | |
}, | |
schema: [], | |
messages: { | |
isAFunction: "'{{name}}' is a function." | |
} | |
}, | |
create(context) { | |
const sourceCode = context.sourceCode; | |
/** | |
* Reports a reference if is non initializer and writable. | |
* @param {References} references Collection of reference to check. | |
* @returns {void} | |
*/ | |
function checkReference(references) { | |
astUtils.getModifyingReferences(references).forEach(reference => { | |
context.report({ | |
node: reference.identifier, | |
messageId: "isAFunction", | |
data: { | |
name: reference.identifier.name | |
} | |
}); | |
}); | |
} | |
/** | |
* Finds and reports references that are non initializer and writable. | |
* @param {Variable} variable A variable to check. | |
* @returns {void} | |
*/ | |
function checkVariable(variable) { | |
if (variable.defs[0].type === "FunctionName") { | |
checkReference(variable.references); | |
} | |
} | |
/** | |
* Checks parameters of a given function node. | |
* @param {ASTNode} node A function node to check. | |
* @returns {void} | |
*/ | |
function checkForFunction(node) { | |
sourceCode.getDeclaredVariables(node).forEach(checkVariable); | |
} | |
return { | |
FunctionDeclaration: checkForFunction, | |
FunctionExpression: checkForFunction | |
}; | |
} | |
}; |