| "use strict"; |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| var path = require("path"); |
| /** |
| * Converts an absolute baseUrl and paths to an array of absolute mapping entries. |
| * The array is sorted by longest prefix. |
| * Having an array with entries allows us to keep a sorting order rather than |
| * sort by keys each time we use the mappings. |
| * @param absoluteBaseUrl |
| * @param paths |
| * @param addMatchAll |
| */ |
| function getAbsoluteMappingEntries(absoluteBaseUrl, paths, addMatchAll) { |
| // Resolve all paths to absolute form once here, and sort them by |
| // longest prefix once here, this saves time on each request later. |
| // We need to put them in an array to preserve the sorting order. |
| var sortedKeys = sortByLongestPrefix(Object.keys(paths)); |
| var absolutePaths = []; |
| for (var _i = 0, sortedKeys_1 = sortedKeys; _i < sortedKeys_1.length; _i++) { |
| var key = sortedKeys_1[_i]; |
| absolutePaths.push({ |
| pattern: key, |
| paths: paths[key].map(function (pathToResolve) { |
| return path.join(absoluteBaseUrl, pathToResolve); |
| }), |
| }); |
| } |
| // If there is no match-all path specified in the paths section of tsconfig, then try to match |
| // all paths relative to baseUrl, this is how typescript works. |
| if (!paths["*"] && addMatchAll) { |
| absolutePaths.push({ |
| pattern: "*", |
| paths: [absoluteBaseUrl.replace(/\/$/, "") + "/*"], |
| }); |
| } |
| return absolutePaths; |
| } |
| exports.getAbsoluteMappingEntries = getAbsoluteMappingEntries; |
| /** |
| * Sort path patterns. |
| * If a module name can be matched with multiple patterns then pattern with the longest prefix will be picked. |
| */ |
| function sortByLongestPrefix(arr) { |
| return arr |
| .concat() |
| .sort(function (a, b) { return getPrefixLength(b) - getPrefixLength(a); }); |
| } |
| function getPrefixLength(pattern) { |
| var prefixLength = pattern.indexOf("*"); |
| return pattern.substr(0, prefixLength).length; |
| } |