отчет

Lab/node_modules/eslint-module-utils/resolve.js

@@ -0,0 +1,254 @@
+'use strict';
+
+exports.__esModule = true;
+
+const fs = require('fs');
+const Module = require('module');
+const path = require('path');
+const { getPhysicalFilename } = require('./contextCompat');
+
+const hashObject = require('./hash').hashObject;
+const ModuleCache = require('./ModuleCache').default;
+const pkgDir = require('./pkgDir').default;
+
+const CASE_SENSITIVE_FS = !fs.existsSync(path.join(__dirname.toUpperCase(), 'reSOLVE.js'));
+exports.CASE_SENSITIVE_FS = CASE_SENSITIVE_FS;
+
+const ERROR_NAME = 'EslintPluginImportResolveError';
+
+const fileExistsCache = new ModuleCache();
+
+// Polyfill Node's `Module.createRequireFromPath` if not present (added in Node v10.12.0)
+// Use `Module.createRequire` if available (added in Node v12.2.0)
+const createRequire = Module.createRequire
+  // @ts-expect-error this only exists in older node
+  || Module.createRequireFromPath
+  || /** @type {(filename: string) => unknown} */ function (filename) {
+    const mod = new Module(filename, void null);
+    mod.filename = filename;
+    // @ts-expect-error _nodeModulePaths is undocumented
+    mod.paths = Module._nodeModulePaths(path.dirname(filename));
+
+    // @ts-expect-error _compile is undocumented
+    mod._compile(`module.exports = require;`, filename);
+
+    return mod.exports;
+  };
+
+/** @type {(resolver: object) => resolver is import('./resolve').Resolver} */
+function isResolverValid(resolver) {
+  if ('interfaceVersion' in resolver && resolver.interfaceVersion === 2) {
+    return 'resolve' in resolver && !!resolver.resolve && typeof resolver.resolve === 'function';
+  }
+  return 'resolveImport' in resolver && !!resolver.resolveImport && typeof resolver.resolveImport === 'function';
+}
+
+/** @type {<T extends string>(target: T, sourceFile?: string | null | undefined) => undefined | ReturnType<typeof require>} */
+function tryRequire(target, sourceFile) {
+  let resolved;
+  try {
+    // Check if the target exists
+    if (sourceFile != null) {
+      try {
+        resolved = createRequire(path.resolve(sourceFile)).resolve(target);
+      } catch (e) {
+        resolved = require.resolve(target);
+      }
+    } else {
+      resolved = require.resolve(target);
+    }
+  } catch (e) {
+    // If the target does not exist then just return undefined
+    return undefined;
+  }
+
+  // If the target exists then return the loaded module
+  return require(resolved);
+}
+
+/** @type {<T extends Map<string, unknown>>(resolvers: string[] | string | { [k: string]: string }, map: T) => T} */
+function resolverReducer(resolvers, map) {
+  if (Array.isArray(resolvers)) {
+    resolvers.forEach((r) => resolverReducer(r, map));
+    return map;
+  }
+
+  if (typeof resolvers === 'string') {
+    map.set(resolvers, null);
+    return map;
+  }
+
+  if (typeof resolvers === 'object') {
+    for (const key in resolvers) {
+      map.set(key, resolvers[key]);
+    }
+    return map;
+  }
+
+  const err = new Error('invalid resolver config');
+  err.name = ERROR_NAME;
+  throw err;
+}
+
+/** @type {(sourceFile: string) => string} */
+function getBaseDir(sourceFile) {
+  return pkgDir(sourceFile) || process.cwd();
+}
+
+/** @type {(name: string, sourceFile: string) => import('./resolve').Resolver} */
+function requireResolver(name, sourceFile) {
+  // Try to resolve package with conventional name
+  const resolver = tryRequire(`eslint-import-resolver-${name}`, sourceFile)
+    || tryRequire(name, sourceFile)
+    || tryRequire(path.resolve(getBaseDir(sourceFile), name));
+
+  if (!resolver) {
+    const err = new Error(`unable to load resolver "${name}".`);
+    err.name = ERROR_NAME;
+    throw err;
+  }
+  if (!isResolverValid(resolver)) {
+    const err = new Error(`${name} with invalid interface loaded as resolver`);
+    err.name = ERROR_NAME;
+    throw err;
+  }
+
+  return resolver;
+}
+
+// https://stackoverflow.com/a/27382838
+/** @type {import('./resolve').fileExistsWithCaseSync} */
+exports.fileExistsWithCaseSync = function fileExistsWithCaseSync(filepath, cacheSettings, strict) {
+  // don't care if the FS is case-sensitive
+  if (CASE_SENSITIVE_FS) { return true; }
+
+  // null means it resolved to a builtin
+  if (filepath === null) { return true; }
+  if (filepath.toLowerCase() === process.cwd().toLowerCase() && !strict) { return true; }
+  const parsedPath = path.parse(filepath);
+  const dir = parsedPath.dir;
+
+  let result = fileExistsCache.get(filepath, cacheSettings);
+  if (result != null) { return result; }
+
+  // base case
+  if (dir === '' || parsedPath.root === filepath) {
+    result = true;
+  } else {
+    const filenames = fs.readdirSync(dir);
+    if (filenames.indexOf(parsedPath.base) === -1) {
+      result = false;
+    } else {
+      result = fileExistsWithCaseSync(dir, cacheSettings, strict);
+    }
+  }
+  fileExistsCache.set(filepath, result);
+  return result;
+};
+
+/** @type {import('./types').ESLintSettings | null} */
+let prevSettings = null;
+let memoizedHash = '';
+/** @type {(modulePath: string, sourceFile: string, settings: import('./types').ESLintSettings) => import('./resolve').ResolvedResult} */
+function fullResolve(modulePath, sourceFile, settings) {
+  // check if this is a bonus core module
+  const coreSet = new Set(settings['import/core-modules']);
+  if (coreSet.has(modulePath)) { return { found: true, path: null }; }
+
+  const sourceDir = path.dirname(sourceFile);
+
+  if (prevSettings !== settings) {
+    memoizedHash = hashObject(settings).digest('hex');
+    prevSettings = settings;
+  }
+
+  const cacheKey = sourceDir + memoizedHash + modulePath;
+
+  const cacheSettings = ModuleCache.getSettings(settings);
+
+  const cachedPath = fileExistsCache.get(cacheKey, cacheSettings);
+  if (cachedPath !== undefined) { return { found: true, path: cachedPath }; }
+
+  /** @type {(resolvedPath: string | null) => void} */
+  function cache(resolvedPath) {
+    fileExistsCache.set(cacheKey, resolvedPath);
+  }
+
+  /** @type {(resolver: import('./resolve').Resolver, config: unknown) => import('./resolve').ResolvedResult} */
+  function withResolver(resolver, config) {
+    if (resolver.interfaceVersion === 2) {
+      return resolver.resolve(modulePath, sourceFile, config);
+    }
+
+    try {
+      const resolved = resolver.resolveImport(modulePath, sourceFile, config);
+      if (resolved === undefined) { return { found: false }; }
+      return { found: true, path: resolved };
+    } catch (err) {
+      return { found: false };
+    }
+  }
+
+  const configResolvers = settings['import/resolver']
+    || { node: settings['import/resolve'] }; // backward compatibility
+
+  const resolvers = resolverReducer(configResolvers, new Map());
+
+  for (const pair of resolvers) {
+    const name = pair[0];
+    const config = pair[1];
+    const resolver = requireResolver(name, sourceFile);
+    const resolved = withResolver(resolver, config);
+
+    if (!resolved.found) { continue; }
+
+    // else, counts
+    cache(resolved.path);
+    return resolved;
+  }
+
+  // failed
+  // cache(undefined)
+  return { found: false };
+}
+
+/** @type {import('./resolve').relative} */
+function relative(modulePath, sourceFile, settings) {
+  return fullResolve(modulePath, sourceFile, settings).path;
+}
+exports.relative = relative;
+
+/** @type {Set<import('eslint').Rule.RuleContext>} */
+const erroredContexts = new Set();
+
+/**
+ * Given
+ * @param p - module path
+ * @param context - ESLint context
+ * @return - the full module filesystem path; null if package is core; undefined if not found
+ * @type {import('./resolve').default}
+ */
+function resolve(p, context) {
+  try {
+    return relative(p, getPhysicalFilename(context), context.settings);
+  } catch (err) {
+    if (!erroredContexts.has(context)) {
+      // The `err.stack` string starts with `err.name` followed by colon and `err.message`.
+      // We're filtering out the default `err.name` because it adds little value to the message.
+      // @ts-expect-error this might be an Error
+      let errMessage = err.message;
+      // @ts-expect-error this might be an Error
+      if (err.name !== ERROR_NAME && err.stack) {
+        // @ts-expect-error this might be an Error
+        errMessage = err.stack.replace(/^Error: /, '');
+      }
+      context.report({
+        message: `Resolve error: ${errMessage}`,
+        loc: { line: 1, column: 0 },
+      });
+      erroredContexts.add(context);
+    }
+  }
+}
+resolve.relative = relative;
+exports.default = resolve;