OwlCyberSecurity - MANAGER

Edit File: match-path-sync.ts

import * as path from "path";
import * as Filesystem from "./filesystem";
import * as MappingEntry from "./mapping-entry";
import * as TryPath from "./try-path";

/**
 * Function that can match a path
 */
export interface MatchPath {
  (
    requestedModule: string,
    readJson?: Filesystem.ReadJsonSync,
    fileExists?: (name: string) => boolean,
    extensions?: ReadonlyArray<string>
  ): string | undefined;
}

/**
 * Creates a function that can resolve paths according to tsconfig paths property.
 * @param absoluteBaseUrl Absolute version of baseUrl as specified in tsconfig.
 * @param paths The paths as specified in tsconfig.
 * @param mainFields A list of package.json field names to try when resolving module files.
 * @param addMatchAll Add a match-all "*" rule if none is present
 * @returns a function that can resolve paths.
 */
export function createMatchPath(
  absoluteBaseUrl: string,
  paths: { [key: string]: Array<string> },
  mainFields: string[] = ["main"],
  addMatchAll: boolean = true
): MatchPath {
  const absolutePaths = MappingEntry.getAbsoluteMappingEntries(
    absoluteBaseUrl,
    paths,
    addMatchAll
  );

return (
    requestedModule: string,
    readJson?: Filesystem.ReadJsonSync,
    fileExists?: Filesystem.FileExistsSync,
    extensions?: Array<string>
  ) =>
    matchFromAbsolutePaths(
      absolutePaths,
      requestedModule,
      readJson,
      fileExists,
      extensions,
      mainFields
    );
}

/**
 * Finds a path from tsconfig that matches a module load request.
 * @param absolutePathMappings The paths to try as specified in tsconfig but resolved to absolute form.
 * @param requestedModule The required module name.
 * @param readJson Function that can read json from a path (useful for testing).
 * @param fileExists Function that checks for existence of a file at a path (useful for testing).
 * @param extensions File extensions to probe for (useful for testing).
 * @param mainFields A list of package.json field names to try when resolving module files.
 * @returns the found path, or undefined if no path was found.
 */
export function matchFromAbsolutePaths(
  absolutePathMappings: ReadonlyArray<MappingEntry.MappingEntry>,
  requestedModule: string,
  readJson: Filesystem.ReadJsonSync = Filesystem.readJsonFromDiskSync,
  fileExists: Filesystem.FileExistsSync = Filesystem.fileExistsSync,
  extensions: Array<string> = Object.keys(require.extensions),
  mainFields: string[] = ["main"]
): string | undefined {
  const tryPaths = TryPath.getPathsToTry(
    extensions,
    absolutePathMappings,
    requestedModule
  );

if (!tryPaths) {
    return undefined;
  }

return findFirstExistingPath(tryPaths, readJson, fileExists, mainFields);
}

return undefined;
}