初始化

康凯

2022-05-20 aa4c235a8ca67ea8b731f90c951a465e92c0a865

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
/**
 * @fileoverview Rule to disallow use of Object.prototype builtins on objects
 * @author Andrew Levine
 */
"use strict";
 
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
 
module.exports = {
    meta: {
        type: "problem",
 
        docs: {
            description: "disallow calling some `Object.prototype` methods directly on objects",
            category: "Possible Errors",
            recommended: true,
            url: "https://eslint.org/docs/rules/no-prototype-builtins"
        },
 
        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
        };
    }
};