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Diffstat (limited to 'tools/node_modules/eslint/lib/rules/no-prototype-builtins.js')
-rw-r--r-- | tools/node_modules/eslint/lib/rules/no-prototype-builtins.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/no-prototype-builtins.js b/tools/node_modules/eslint/lib/rules/no-prototype-builtins.js new file mode 100644 index 0000000000..b9f040eaf6 --- /dev/null +++ b/tools/node_modules/eslint/lib/rules/no-prototype-builtins.js @@ -0,0 +1,54 @@ +/** + * @fileoverview Rule to disallow use of Object.prototype builtins on objects + * @author Andrew Levine + */ +"use strict"; + +//------------------------------------------------------------------------------ +// Rule Definition +//------------------------------------------------------------------------------ + +module.exports = { + meta: { + docs: { + description: "disallow calling some `Object.prototype` methods directly on objects", + category: "Possible Errors", + recommended: false + }, + + schema: [] + }, + + create(context) { + const DISALLOWED_PROPS = [ + "hasOwnProperty", + "isPrototypeOf", + "propertyIsEnumerable" + ]; + + /** + * Reports if a disallowed property is used in a CallExpression + * @param {ASTNode} node The CallExpression node. + * @returns {void} + */ + function disallowBuiltIns(node) { + if (node.callee.type !== "MemberExpression" || node.callee.computed) { + return; + } + const propName = node.callee.property.name; + + if (DISALLOWED_PROPS.indexOf(propName) > -1) { + context.report({ + message: "Do not access Object.prototype method '{{prop}}' from target object.", + loc: node.callee.property.loc.start, + data: { prop: propName }, + node + }); + } + } + + return { + CallExpression: disallowBuiltIns + }; + } +}; |