214 lines
6.9 KiB
JavaScript
214 lines
6.9 KiB
JavaScript
/**
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* @fileoverview Restrict usage of specified node modules.
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* @author Christian Schulz
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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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const ignore = require("ignore");
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const arrayOfStrings = {
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type: "array",
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items: { type: "string" },
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uniqueItems: true
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};
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const arrayOfStringsOrObjects = {
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type: "array",
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items: {
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anyOf: [
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{ type: "string" },
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{
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type: "object",
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properties: {
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name: { type: "string" },
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message: {
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type: "string",
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minLength: 1
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}
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},
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additionalProperties: false,
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required: ["name"]
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}
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]
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},
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uniqueItems: true
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};
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module.exports = {
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meta: {
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deprecated: true,
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replacedBy: [],
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type: "suggestion",
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docs: {
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description: "disallow specified modules when loaded by `require`",
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category: "Node.js and CommonJS",
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recommended: false,
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url: "https://eslint.org/docs/rules/no-restricted-modules"
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},
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schema: {
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anyOf: [
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arrayOfStringsOrObjects,
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{
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type: "array",
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items: {
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type: "object",
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properties: {
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paths: arrayOfStringsOrObjects,
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patterns: arrayOfStrings
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},
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additionalProperties: false
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},
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additionalItems: false
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}
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]
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},
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messages: {
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defaultMessage: "'{{name}}' module is restricted from being used.",
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// eslint-disable-next-line eslint-plugin/report-message-format
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customMessage: "'{{name}}' module is restricted from being used. {{customMessage}}",
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patternMessage: "'{{name}}' module is restricted from being used by a pattern."
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}
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},
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create(context) {
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const options = Array.isArray(context.options) ? context.options : [];
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const isPathAndPatternsObject =
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typeof options[0] === "object" &&
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(Object.prototype.hasOwnProperty.call(options[0], "paths") || Object.prototype.hasOwnProperty.call(options[0], "patterns"));
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const restrictedPaths = (isPathAndPatternsObject ? options[0].paths : context.options) || [];
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const restrictedPatterns = (isPathAndPatternsObject ? options[0].patterns : []) || [];
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const restrictedPathMessages = restrictedPaths.reduce((memo, importName) => {
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if (typeof importName === "string") {
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memo[importName] = null;
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} else {
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memo[importName.name] = importName.message;
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}
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return memo;
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}, {});
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// if no imports are restricted we don"t need to check
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if (Object.keys(restrictedPaths).length === 0 && restrictedPatterns.length === 0) {
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return {};
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}
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const ig = ignore().add(restrictedPatterns);
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/**
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* Function to check if a node is a string literal.
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* @param {ASTNode} node The node to check.
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* @returns {boolean} If the node is a string literal.
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*/
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function isStringLiteral(node) {
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return node && node.type === "Literal" && typeof node.value === "string";
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}
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/**
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* Function to check if a node is a static string template literal.
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* @param {ASTNode} node The node to check.
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* @returns {boolean} If the node is a string template literal.
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*/
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function isStaticTemplateLiteral(node) {
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return node && node.type === "TemplateLiteral" && node.expressions.length === 0;
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}
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/**
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* Function to check if a node is a require call.
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* @param {ASTNode} node The node to check.
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* @returns {boolean} If the node is a require call.
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*/
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function isRequireCall(node) {
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return node.callee.type === "Identifier" && node.callee.name === "require";
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}
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/**
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* Extract string from Literal or TemplateLiteral node
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* @param {ASTNode} node The node to extract from
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* @returns {string|null} Extracted string or null if node doesn't represent a string
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*/
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function getFirstArgumentString(node) {
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if (isStringLiteral(node)) {
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return node.value.trim();
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}
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if (isStaticTemplateLiteral(node)) {
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return node.quasis[0].value.cooked.trim();
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}
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return null;
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}
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/**
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* Report a restricted path.
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* @param {node} node representing the restricted path reference
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* @param {string} name restricted path
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* @returns {void}
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* @private
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*/
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function reportPath(node, name) {
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const customMessage = restrictedPathMessages[name];
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const messageId = customMessage
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? "customMessage"
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: "defaultMessage";
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context.report({
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node,
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messageId,
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data: {
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name,
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customMessage
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}
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});
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}
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/**
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* Check if the given name is a restricted path name
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* @param {string} name name of a variable
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* @returns {boolean} whether the variable is a restricted path or not
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* @private
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*/
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function isRestrictedPath(name) {
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return Object.prototype.hasOwnProperty.call(restrictedPathMessages, name);
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}
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return {
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CallExpression(node) {
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if (isRequireCall(node)) {
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// node has arguments
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if (node.arguments.length) {
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const name = getFirstArgumentString(node.arguments[0]);
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// if first argument is a string literal or a static string template literal
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if (name) {
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// check if argument value is in restricted modules array
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if (isRestrictedPath(name)) {
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reportPath(node, name);
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}
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if (restrictedPatterns.length > 0 && ig.ignores(name)) {
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context.report({
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node,
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messageId: "patternMessage",
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data: { name }
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});
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}
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}
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}
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}
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}
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};
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}
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};
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