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- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.matchFromAbsolutePaths = exports.createMatchPath = void 0;
- var path = require("path");
- var Filesystem = require("./filesystem");
- var MappingEntry = require("./mapping-entry");
- var TryPath = require("./try-path");
- /**
- * 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.
- */
- function createMatchPath(absoluteBaseUrl, paths, mainFields, addMatchAll) {
- if (mainFields === void 0) { mainFields = ["main"]; }
- if (addMatchAll === void 0) { addMatchAll = true; }
- var absolutePaths = MappingEntry.getAbsoluteMappingEntries(absoluteBaseUrl, paths, addMatchAll);
- return function (requestedModule, readJson, fileExists, extensions) {
- return matchFromAbsolutePaths(absolutePaths, requestedModule, readJson, fileExists, extensions, mainFields);
- };
- }
- exports.createMatchPath = createMatchPath;
- /**
- * 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.
- */
- function matchFromAbsolutePaths(absolutePathMappings, requestedModule, readJson, fileExists, extensions, mainFields) {
- if (readJson === void 0) { readJson = Filesystem.readJsonFromDiskSync; }
- if (fileExists === void 0) { fileExists = Filesystem.fileExistsSync; }
- if (extensions === void 0) { extensions = Object.keys(require.extensions); }
- if (mainFields === void 0) { mainFields = ["main"]; }
- var tryPaths = TryPath.getPathsToTry(extensions, absolutePathMappings, requestedModule);
- if (!tryPaths) {
- return undefined;
- }
- return findFirstExistingPath(tryPaths, readJson, fileExists, mainFields);
- }
- exports.matchFromAbsolutePaths = matchFromAbsolutePaths;
- function findFirstExistingMainFieldMappedFile(packageJson, mainFields, packageJsonPath, fileExists) {
- for (var index = 0; index < mainFields.length; index++) {
- var mainFieldName = mainFields[index];
- var candidateMapping = packageJson[mainFieldName];
- if (candidateMapping && typeof candidateMapping === "string") {
- var candidateFilePath = path.join(path.dirname(packageJsonPath), candidateMapping);
- if (fileExists(candidateFilePath)) {
- return candidateFilePath;
- }
- }
- }
- return undefined;
- }
- function findFirstExistingPath(tryPaths, readJson, fileExists, mainFields) {
- if (readJson === void 0) { readJson = Filesystem.readJsonFromDiskSync; }
- if (mainFields === void 0) { mainFields = ["main"]; }
- for (var _i = 0, tryPaths_1 = tryPaths; _i < tryPaths_1.length; _i++) {
- var tryPath = tryPaths_1[_i];
- if (tryPath.type === "file" ||
- tryPath.type === "extension" ||
- tryPath.type === "index") {
- if (fileExists(tryPath.path)) {
- return TryPath.getStrippedPath(tryPath);
- }
- }
- else if (tryPath.type === "package") {
- var packageJson = readJson(tryPath.path);
- if (packageJson) {
- var mainFieldMappedFile = findFirstExistingMainFieldMappedFile(packageJson, mainFields, tryPath.path, fileExists);
- if (mainFieldMappedFile) {
- return mainFieldMappedFile;
- }
- }
- }
- else {
- TryPath.exhaustiveTypeException(tryPath.type);
- }
- }
- return undefined;
- }
- //# sourceMappingURL=match-path-sync.js.map
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