ifc-language-server/node_modules/eslint/lib/rules/no-catch-shadow.js
Ryan Schultz 8afacf268a Implemented a working Language Server Protocol (LSP) for IFC files with:
- Hover provider showing entity information and type
- Go-to-definition (F12) for entity references
- Basic IFC file validation (ISO-10303-21 header check)
- Entity parsing with regex-based detection
- Proper CommonJS module system (avoiding ES module issues)

This replaces the broken baseline from ifc-developer-tools which had:
- Non-functional ES module configuration
- Circular dependency issues
- Parser crashes
- Non-working PositionVisitor

Built on Microsoft's LSP example template for a clean, maintainable foundation.

Next: Add hierarchical entity dependency tree in hover tooltip."
2025-12-07 10:20:07 -06:00

96 lines
2.5 KiB
JavaScript

/**
* @fileoverview Rule to flag variable leak in CatchClauses in IE 8 and earlier
* @author Ian Christian Myers
* @deprecated in ESLint v5.1.0
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const astUtils = require("./utils/ast-utils");
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../types').Rule.RuleModule} */
module.exports = {
meta: {
type: "suggestion",
docs: {
description:
"Disallow `catch` clause parameters from shadowing variables in the outer scope",
recommended: false,
url: "https://eslint.org/docs/latest/rules/no-catch-shadow",
},
deprecated: {
message: "This rule was renamed.",
url: "https://eslint.org/blog/2018/07/eslint-v5.1.0-released/",
deprecatedSince: "5.1.0",
availableUntil: null,
replacedBy: [
{
rule: {
name: "no-shadow",
url: "https://eslint.org/docs/rules/no-shadow",
},
},
],
},
schema: [],
messages: {
mutable:
"Value of '{{name}}' may be overwritten in IE 8 and earlier.",
},
},
create(context) {
const sourceCode = context.sourceCode;
//--------------------------------------------------------------------------
// Helpers
//--------------------------------------------------------------------------
/**
* Check if the parameters are been shadowed
* @param {Object} scope current scope
* @param {string} name parameter name
* @returns {boolean} True is its been shadowed
*/
function paramIsShadowing(scope, name) {
return astUtils.getVariableByName(scope, name) !== null;
}
//--------------------------------------------------------------------------
// Public API
//--------------------------------------------------------------------------
return {
"CatchClause[param!=null]"(node) {
let scope = sourceCode.getScope(node);
/*
* When ecmaVersion >= 6, CatchClause creates its own scope
* so start from one upper scope to exclude the current node
*/
if (scope.block === node) {
scope = scope.upper;
}
if (paramIsShadowing(scope, node.param.name)) {
context.report({
node,
messageId: "mutable",
data: { name: node.param.name },
});
}
},
};
},
};