Assignment5_new/node_modules/eslint/lib/rules/no-restricted-imports.js

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2025-01-07 05:14:59 +00:00
/**
* @fileoverview Restrict usage of specified node imports.
* @author Guy Ellis
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const astUtils = require("./utils/ast-utils");
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
const ignore = require("ignore");
const arrayOfStringsOrObjects = {
type: "array",
items: {
anyOf: [
{ type: "string" },
{
type: "object",
properties: {
name: { type: "string" },
message: {
type: "string",
minLength: 1
},
importNames: {
type: "array",
items: {
type: "string"
}
},
allowImportNames: {
type: "array",
items: {
type: "string"
}
}
},
additionalProperties: false,
required: ["name"],
not: { required: ["importNames", "allowImportNames"] }
}
]
},
uniqueItems: true
};
const arrayOfStringsOrObjectPatterns = {
anyOf: [
{
type: "array",
items: {
type: "string"
},
uniqueItems: true
},
{
type: "array",
items: {
type: "object",
properties: {
importNames: {
type: "array",
items: {
type: "string"
},
minItems: 1,
uniqueItems: true
},
allowImportNames: {
type: "array",
items: {
type: "string"
},
minItems: 1,
uniqueItems: true
},
group: {
type: "array",
items: {
type: "string"
},
minItems: 1,
uniqueItems: true
},
regex: {
type: "string"
},
importNamePattern: {
type: "string"
},
allowImportNamePattern: {
type: "string"
},
message: {
type: "string",
minLength: 1
},
caseSensitive: {
type: "boolean"
}
},
additionalProperties: false,
not: {
anyOf: [
{ required: ["importNames", "allowImportNames"] },
{ required: ["importNamePattern", "allowImportNamePattern"] },
{ required: ["importNames", "allowImportNamePattern"] },
{ required: ["importNamePattern", "allowImportNames"] },
{ required: ["allowImportNames", "allowImportNamePattern"] }
]
},
oneOf: [
{ required: ["group"] },
{ required: ["regex"] }
]
},
uniqueItems: true
}
]
};
/** @type {import('../shared/types').Rule} */
module.exports = {
meta: {
type: "suggestion",
docs: {
description: "Disallow specified modules when loaded by `import`",
recommended: false,
url: "https://eslint.org/docs/latest/rules/no-restricted-imports"
},
messages: {
path: "'{{importSource}}' import is restricted from being used.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
pathWithCustomMessage: "'{{importSource}}' import is restricted from being used. {{customMessage}}",
patterns: "'{{importSource}}' import is restricted from being used by a pattern.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
patternWithCustomMessage: "'{{importSource}}' import is restricted from being used by a pattern. {{customMessage}}",
patternAndImportName: "'{{importName}}' import from '{{importSource}}' is restricted from being used by a pattern.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
patternAndImportNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted from being used by a pattern. {{customMessage}}",
patternAndEverything: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted from being used by a pattern.",
patternAndEverythingWithRegexImportName: "* import is invalid because import name matching '{{importNames}}' pattern from '{{importSource}}' is restricted from being used.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
patternAndEverythingWithCustomMessage: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted from being used by a pattern. {{customMessage}}",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
patternAndEverythingWithRegexImportNameAndCustomMessage: "* import is invalid because import name matching '{{importNames}}' pattern from '{{importSource}}' is restricted from being used. {{customMessage}}",
everything: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
everythingWithCustomMessage: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted. {{customMessage}}",
importName: "'{{importName}}' import from '{{importSource}}' is restricted.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
importNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted. {{customMessage}}",
allowedImportName: "'{{importName}}' import from '{{importSource}}' is restricted because only '{{allowedImportNames}}' import(s) is/are allowed.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
allowedImportNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted because only '{{allowedImportNames}}' import(s) is/are allowed. {{customMessage}}",
everythingWithAllowImportNames: "* import is invalid because only '{{allowedImportNames}}' from '{{importSource}}' is/are allowed.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
everythingWithAllowImportNamesAndCustomMessage: "* import is invalid because only '{{allowedImportNames}}' from '{{importSource}}' is/are allowed. {{customMessage}}",
allowedImportNamePattern: "'{{importName}}' import from '{{importSource}}' is restricted because only imports that match the pattern '{{allowedImportNamePattern}}' are allowed from '{{importSource}}'.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
allowedImportNamePatternWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted because only imports that match the pattern '{{allowedImportNamePattern}}' are allowed from '{{importSource}}'. {{customMessage}}",
everythingWithAllowedImportNamePattern: "* import is invalid because only imports that match the pattern '{{allowedImportNamePattern}}' from '{{importSource}}' are allowed.",
// eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
everythingWithAllowedImportNamePatternWithCustomMessage: "* import is invalid because only imports that match the pattern '{{allowedImportNamePattern}}' from '{{importSource}}' are allowed. {{customMessage}}"
},
schema: {
anyOf: [
arrayOfStringsOrObjects,
{
type: "array",
items: [{
type: "object",
properties: {
paths: arrayOfStringsOrObjects,
patterns: arrayOfStringsOrObjectPatterns
},
additionalProperties: false
}],
additionalItems: false
}
]
}
},
create(context) {
const sourceCode = context.sourceCode;
const options = Array.isArray(context.options) ? context.options : [];
const isPathAndPatternsObject =
typeof options[0] === "object" &&
(Object.hasOwn(options[0], "paths") || Object.hasOwn(options[0], "patterns"));
const restrictedPaths = (isPathAndPatternsObject ? options[0].paths : context.options) || [];
const groupedRestrictedPaths = restrictedPaths.reduce((memo, importSource) => {
const path = typeof importSource === "string"
? importSource
: importSource.name;
if (!memo[path]) {
memo[path] = [];
}
if (typeof importSource === "string") {
memo[path].push({});
} else {
memo[path].push({
message: importSource.message,
importNames: importSource.importNames,
allowImportNames: importSource.allowImportNames
});
}
return memo;
}, Object.create(null));
// Handle patterns too, either as strings or groups
let restrictedPatterns = (isPathAndPatternsObject ? options[0].patterns : []) || [];
// standardize to array of objects if we have an array of strings
if (restrictedPatterns.length > 0 && typeof restrictedPatterns[0] === "string") {
restrictedPatterns = [{ group: restrictedPatterns }];
}
// relative paths are supported for this rule
const restrictedPatternGroups = restrictedPatterns.map(
({ group, regex, message, caseSensitive, importNames, importNamePattern, allowImportNames, allowImportNamePattern }) => (
{
...(group ? { matcher: ignore({ allowRelativePaths: true, ignorecase: !caseSensitive }).add(group) } : {}),
...(typeof regex === "string" ? { regexMatcher: new RegExp(regex, caseSensitive ? "u" : "iu") } : {}),
customMessage: message,
importNames,
importNamePattern,
allowImportNames,
allowImportNamePattern
}
)
);
// if no imports are restricted we don't need to check
if (Object.keys(restrictedPaths).length === 0 && restrictedPatternGroups.length === 0) {
return {};
}
/**
* Report a restricted path.
* @param {string} importSource path of the import
* @param {Map<string,Object[]>} importNames Map of import names that are being imported
* @param {node} node representing the restricted path reference
* @returns {void}
* @private
*/
function checkRestrictedPathAndReport(importSource, importNames, node) {
if (!Object.hasOwn(groupedRestrictedPaths, importSource)) {
return;
}
groupedRestrictedPaths[importSource].forEach(restrictedPathEntry => {
const customMessage = restrictedPathEntry.message;
const restrictedImportNames = restrictedPathEntry.importNames;
const allowedImportNames = restrictedPathEntry.allowImportNames;
if (!restrictedImportNames && !allowedImportNames) {
context.report({
node,
messageId: customMessage ? "pathWithCustomMessage" : "path",
data: {
importSource,
customMessage
}
});
return;
}
importNames.forEach((specifiers, importName) => {
if (importName === "*") {
const [specifier] = specifiers;
if (restrictedImportNames) {
context.report({
node,
messageId: customMessage ? "everythingWithCustomMessage" : "everything",
loc: specifier.loc,
data: {
importSource,
importNames: restrictedImportNames,
customMessage
}
});
} else if (allowedImportNames) {
context.report({
node,
messageId: customMessage ? "everythingWithAllowImportNamesAndCustomMessage" : "everythingWithAllowImportNames",
loc: specifier.loc,
data: {
importSource,
allowedImportNames,
customMessage
}
});
}
return;
}
if (restrictedImportNames && restrictedImportNames.includes(importName)) {
specifiers.forEach(specifier => {
context.report({
node,
messageId: customMessage ? "importNameWithCustomMessage" : "importName",
loc: specifier.loc,
data: {
importSource,
customMessage,
importName
}
});
});
}
if (allowedImportNames && !allowedImportNames.includes(importName)) {
specifiers.forEach(specifier => {
context.report({
node,
loc: specifier.loc,
messageId: customMessage ? "allowedImportNameWithCustomMessage" : "allowedImportName",
data: {
importSource,
customMessage,
importName,
allowedImportNames
}
});
});
}
});
});
}
/**
* Report a restricted path specifically for patterns.
* @param {node} node representing the restricted path reference
* @param {Object} group contains an Ignore instance for paths, the customMessage to show on failure,
* and any restricted import names that have been specified in the config
* @param {Map<string,Object[]>} importNames Map of import names that are being imported
* @returns {void}
* @private
*/
function reportPathForPatterns(node, group, importNames) {
const importSource = node.source.value.trim();
const customMessage = group.customMessage;
const restrictedImportNames = group.importNames;
const restrictedImportNamePattern = group.importNamePattern ? new RegExp(group.importNamePattern, "u") : null;
const allowedImportNames = group.allowImportNames;
const allowedImportNamePattern = group.allowImportNamePattern ? new RegExp(group.allowImportNamePattern, "u") : null;
/**
* If we are not restricting to any specific import names and just the pattern itself,
* report the error and move on
*/
if (!restrictedImportNames && !allowedImportNames && !restrictedImportNamePattern && !allowedImportNamePattern) {
context.report({
node,
messageId: customMessage ? "patternWithCustomMessage" : "patterns",
data: {
importSource,
customMessage
}
});
return;
}
importNames.forEach((specifiers, importName) => {
if (importName === "*") {
const [specifier] = specifiers;
if (restrictedImportNames) {
context.report({
node,
messageId: customMessage ? "patternAndEverythingWithCustomMessage" : "patternAndEverything",
loc: specifier.loc,
data: {
importSource,
importNames: restrictedImportNames,
customMessage
}
});
} else if (allowedImportNames) {
context.report({
node,
messageId: customMessage ? "everythingWithAllowImportNamesAndCustomMessage" : "everythingWithAllowImportNames",
loc: specifier.loc,
data: {
importSource,
allowedImportNames,
customMessage
}
});
} else if (allowedImportNamePattern) {
context.report({
node,
messageId: customMessage ? "everythingWithAllowedImportNamePatternWithCustomMessage" : "everythingWithAllowedImportNamePattern",
loc: specifier.loc,
data: {
importSource,
allowedImportNamePattern,
customMessage
}
});
} else {
context.report({
node,
messageId: customMessage ? "patternAndEverythingWithRegexImportNameAndCustomMessage" : "patternAndEverythingWithRegexImportName",
loc: specifier.loc,
data: {
importSource,
importNames: restrictedImportNamePattern,
customMessage
}
});
}
return;
}
if (
(restrictedImportNames && restrictedImportNames.includes(importName)) ||
(restrictedImportNamePattern && restrictedImportNamePattern.test(importName))
) {
specifiers.forEach(specifier => {
context.report({
node,
messageId: customMessage ? "patternAndImportNameWithCustomMessage" : "patternAndImportName",
loc: specifier.loc,
data: {
importSource,
customMessage,
importName
}
});
});
}
if (allowedImportNames && !allowedImportNames.includes(importName)) {
specifiers.forEach(specifier => {
context.report({
node,
messageId: customMessage ? "allowedImportNameWithCustomMessage" : "allowedImportName",
loc: specifier.loc,
data: {
importSource,
customMessage,
importName,
allowedImportNames
}
});
});
} else if (allowedImportNamePattern && !allowedImportNamePattern.test(importName)) {
specifiers.forEach(specifier => {
context.report({
node,
messageId: customMessage ? "allowedImportNamePatternWithCustomMessage" : "allowedImportNamePattern",
loc: specifier.loc,
data: {
importSource,
customMessage,
importName,
allowedImportNamePattern
}
});
});
}
});
}
/**
* Check if the given importSource is restricted by a pattern.
* @param {string} importSource path of the import
* @param {Object} group contains a Ignore instance for paths, and the customMessage to show if it fails
* @returns {boolean} whether the variable is a restricted pattern or not
* @private
*/
function isRestrictedPattern(importSource, group) {
return group.regexMatcher ? group.regexMatcher.test(importSource) : group.matcher.ignores(importSource);
}
/**
* Checks a node to see if any problems should be reported.
* @param {ASTNode} node The node to check.
* @returns {void}
* @private
*/
function checkNode(node) {
const importSource = node.source.value.trim();
const importNames = new Map();
if (node.type === "ExportAllDeclaration") {
const starToken = sourceCode.getFirstToken(node, 1);
importNames.set("*", [{ loc: starToken.loc }]);
} else if (node.specifiers) {
for (const specifier of node.specifiers) {
let name;
const specifierData = { loc: specifier.loc };
if (specifier.type === "ImportDefaultSpecifier") {
name = "default";
} else if (specifier.type === "ImportNamespaceSpecifier") {
name = "*";
} else if (specifier.imported) {
name = astUtils.getModuleExportName(specifier.imported);
} else if (specifier.local) {
name = astUtils.getModuleExportName(specifier.local);
}
if (typeof name === "string") {
if (importNames.has(name)) {
importNames.get(name).push(specifierData);
} else {
importNames.set(name, [specifierData]);
}
}
}
}
checkRestrictedPathAndReport(importSource, importNames, node);
restrictedPatternGroups.forEach(group => {
if (isRestrictedPattern(importSource, group)) {
reportPathForPatterns(node, group, importNames);
}
});
}
return {
ImportDeclaration: checkNode,
ExportNamedDeclaration(node) {
if (node.source) {
checkNode(node);
}
},
ExportAllDeclaration: checkNode
};
}
};