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62 lines
2.0 KiB
62 lines
2.0 KiB
/**
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* @fileoverview Rule to flag when re-assigning native objects
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* @author Ilya Volodin
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = function(context) {
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var NATIVE_OBJECTS = ["Array", "Boolean", "Date", "decodeURI",
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"decodeURIComponent", "encodeURI", "encodeURIComponent",
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"Error", "eval", "EvalError", "Function", "isFinite",
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"isNaN", "JSON", "Math", "Number", "Object", "parseInt",
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"parseFloat", "RangeError", "ReferenceError", "RegExp",
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"String", "SyntaxError", "TypeError", "URIError",
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"Map", "NaN", "Set", "WeakMap", "Infinity", "undefined"];
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var config = context.options[0] || {};
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var exceptions = config.exceptions || [];
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var modifiedNativeObjects = NATIVE_OBJECTS;
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if (exceptions.length) {
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modifiedNativeObjects = NATIVE_OBJECTS.filter(function(builtIn) {
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return exceptions.indexOf(builtIn) === -1;
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});
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}
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return {
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"AssignmentExpression": function(node) {
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if (modifiedNativeObjects.indexOf(node.left.name) >= 0) {
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context.report(node, node.left.name + " is a read-only native object.");
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}
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},
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"VariableDeclarator": function(node) {
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if (modifiedNativeObjects.indexOf(node.id.name) >= 0) {
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context.report(node, "Redefinition of '{{nativeObject}}'.", { nativeObject: node.id.name });
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}
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}
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};
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};
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module.exports.schema = [
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{
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"type": "object",
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"properties": {
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"exceptions": {
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"type": "array",
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"items": {
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"type": "string"
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},
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"uniqueItems": true
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}
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},
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"additionalProperties": false
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}
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];
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