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