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82 lines
2.8 KiB
JavaScript
82 lines
2.8 KiB
JavaScript
/* eslint-disable jsdoc/require-jsdoc, jsdoc/no-undefined-types */
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"use strict";
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function getPrototypeMethods(prototype) {
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/* eslint-disable local-rules/no-prototype-methods */
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return Object.getOwnPropertyNames(prototype).filter(function(name) {
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return (
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typeof prototype[name] === "function" &&
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prototype.hasOwnProperty(name)
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);
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});
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}
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var DISALLOWED_ARRAY_PROPS = getPrototypeMethods(Array.prototype);
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var DISALLOWED_OBJECT_PROPS = getPrototypeMethods(Object.prototype);
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module.exports = {
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// rule to disallow direct use of prototype methods of builtins
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"no-prototype-methods": {
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meta: {
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docs: {
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description: "disallow calling prototype methods directly",
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category: "Possible Errors",
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recommended: false,
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url: "https://eslint.org/docs/rules/no-prototype-builtins"
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},
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schema: []
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},
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create: function(context) {
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/**
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* Reports if a disallowed property is used in a CallExpression
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*
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* @param {ASTNode} node The CallExpression node.
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* @returns {void}
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*/
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function disallowBuiltIns(node) {
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if (
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node.callee.type !== "MemberExpression" ||
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node.callee.computed ||
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// allow static method calls
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node.callee.object.name === "Array" ||
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node.callee.object.name === "Object"
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) {
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return;
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}
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var propName = node.callee.property.name;
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if (DISALLOWED_OBJECT_PROPS.indexOf(propName) > -1) {
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context.report({
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message:
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"Do not access {{obj}} prototype method '{{prop}}' from target object.",
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loc: node.callee.property.loc.start,
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data: {
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obj: "Object",
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prop: propName
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},
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node: node
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});
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} else if (DISALLOWED_ARRAY_PROPS.indexOf(propName) > -1) {
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context.report({
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message:
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"Do not access {{obj}} prototype method '{{prop}}' from target object.",
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loc: node.callee.property.loc.start,
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data: {
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obj: "Array",
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prop: propName
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},
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node: node
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});
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}
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}
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return {
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CallExpression: disallowBuiltIns
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};
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}
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}
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};
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