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no-restricted-properties.js
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no-restricted-properties.js
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/**
* @fileoverview Rule to disallow certain object properties
* @author Will Klein & Eli White
*/
"use strict";
const astUtils = require("../ast-utils");
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow certain properties on certain objects",
category: "Node.js and CommonJS",
recommended: false
},
schema: {
type: "array",
items: {
type: "object",
properties: {
object: {
type: "string"
},
property: {
type: "string"
},
message: {
type: "string"
}
},
additionalProperties: false,
required: [
"object",
"property"
]
},
uniqueItems: true
}
},
create(context) {
const restrictedCalls = context.options;
if (restrictedCalls.length === 0) {
return {};
}
const restrictedProperties = restrictedCalls.reduce(function(restrictions, option) {
const objectName = option.object;
const propertyName = option.property;
if (!restrictions.has(objectName)) {
restrictions.set(objectName, new Map());
}
restrictions.get(objectName).set(propertyName, {
message: option.message
});
return restrictions;
}, new Map());
return {
MemberExpression(node) {
const objectName = node.object && node.object.name;
const propertyName = astUtils.getStaticPropertyName(node);
const matchedObject = restrictedProperties.get(objectName);
const matchedObjectProperty = matchedObject && matchedObject.get(propertyName);
if (matchedObjectProperty) {
const message = matchedObjectProperty.message ? " " + matchedObjectProperty.message : "";
context.report(node, "'{{objectName}}.{{propertyName}}' is restricted from being used.{{message}}", {
objectName,
propertyName,
message
});
}
}
};
}
};