87 lines
4.2 KiB
JavaScript
87 lines
4.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.matchFromAbsolutePaths = exports.createMatchPath = void 0;
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var path = require("path");
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var Filesystem = require("./filesystem");
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var MappingEntry = require("./mapping-entry");
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var TryPath = require("./try-path");
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/**
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* Creates a function that can resolve paths according to tsconfig paths property.
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* @param absoluteBaseUrl Absolute version of baseUrl as specified in tsconfig.
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* @param paths The paths as specified in tsconfig.
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* @param mainFields A list of package.json field names to try when resolving module files.
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* @param addMatchAll Add a match-all "*" rule if none is present
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* @returns a function that can resolve paths.
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*/
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function createMatchPath(absoluteBaseUrl, paths, mainFields, addMatchAll) {
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if (mainFields === void 0) { mainFields = ["main"]; }
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if (addMatchAll === void 0) { addMatchAll = true; }
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var absolutePaths = MappingEntry.getAbsoluteMappingEntries(absoluteBaseUrl, paths, addMatchAll);
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return function (requestedModule, readJson, fileExists, extensions) {
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return matchFromAbsolutePaths(absolutePaths, requestedModule, readJson, fileExists, extensions, mainFields);
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};
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}
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exports.createMatchPath = createMatchPath;
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/**
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* Finds a path from tsconfig that matches a module load request.
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* @param absolutePathMappings The paths to try as specified in tsconfig but resolved to absolute form.
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* @param requestedModule The required module name.
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* @param readJson Function that can read json from a path (useful for testing).
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* @param fileExists Function that checks for existence of a file at a path (useful for testing).
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* @param extensions File extensions to probe for (useful for testing).
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* @param mainFields A list of package.json field names to try when resolving module files.
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* @returns the found path, or undefined if no path was found.
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*/
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function matchFromAbsolutePaths(absolutePathMappings, requestedModule, readJson, fileExists, extensions, mainFields) {
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if (readJson === void 0) { readJson = Filesystem.readJsonFromDiskSync; }
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if (fileExists === void 0) { fileExists = Filesystem.fileExistsSync; }
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if (extensions === void 0) { extensions = Object.keys(require.extensions); }
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if (mainFields === void 0) { mainFields = ["main"]; }
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var tryPaths = TryPath.getPathsToTry(extensions, absolutePathMappings, requestedModule);
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if (!tryPaths) {
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return undefined;
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}
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return findFirstExistingPath(tryPaths, readJson, fileExists, mainFields);
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}
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exports.matchFromAbsolutePaths = matchFromAbsolutePaths;
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function findFirstExistingMainFieldMappedFile(packageJson, mainFields, packageJsonPath, fileExists) {
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for (var index = 0; index < mainFields.length; index++) {
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var mainFieldName = mainFields[index];
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var candidateMapping = packageJson[mainFieldName];
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if (candidateMapping && typeof candidateMapping === "string") {
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var candidateFilePath = path.join(path.dirname(packageJsonPath), candidateMapping);
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if (fileExists(candidateFilePath)) {
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return candidateFilePath;
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}
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}
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}
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return undefined;
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}
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function findFirstExistingPath(tryPaths, readJson, fileExists, mainFields) {
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if (readJson === void 0) { readJson = Filesystem.readJsonFromDiskSync; }
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if (mainFields === void 0) { mainFields = ["main"]; }
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for (var _i = 0, tryPaths_1 = tryPaths; _i < tryPaths_1.length; _i++) {
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var tryPath = tryPaths_1[_i];
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if (tryPath.type === "file" ||
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tryPath.type === "extension" ||
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tryPath.type === "index") {
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if (fileExists(tryPath.path)) {
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return TryPath.getStrippedPath(tryPath);
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}
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}
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else if (tryPath.type === "package") {
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var packageJson = readJson(tryPath.path);
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if (packageJson) {
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var mainFieldMappedFile = findFirstExistingMainFieldMappedFile(packageJson, mainFields, tryPath.path, fileExists);
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if (mainFieldMappedFile) {
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return mainFieldMappedFile;
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}
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}
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}
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else {
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TryPath.exhaustiveTypeException(tryPath.type);
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}
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}
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return undefined;
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}
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//# sourceMappingURL=match-path-sync.js.map
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