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- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- exports.exhaustiveTypeException = exports.getStrippedPath = exports.getPathsToTry = void 0;
- var path = require("path");
- var path_1 = require("path");
- var filesystem_1 = require("./filesystem");
- /**
- * Builds a list of all physical paths to try by:
- * 1. Check for file named exactly as request.
- * 2. Check for files named as request ending in any of the extensions.
- * 3. Check for file specified in package.json's main property.
- * 4. Check for files named as request ending in "index" with any of the extensions.
- */
- function getPathsToTry(extensions, absolutePathMappings, requestedModule) {
- if (!absolutePathMappings || !requestedModule || requestedModule[0] === ".") {
- return undefined;
- }
- var pathsToTry = [];
- for (var _i = 0, absolutePathMappings_1 = absolutePathMappings; _i < absolutePathMappings_1.length; _i++) {
- var entry = absolutePathMappings_1[_i];
- var starMatch = entry.pattern === requestedModule
- ? ""
- : matchStar(entry.pattern, requestedModule);
- if (starMatch !== undefined) {
- var _loop_1 = function (physicalPathPattern) {
- var physicalPath = physicalPathPattern.replace("*", starMatch);
- pathsToTry.push({ type: "file", path: physicalPath });
- pathsToTry.push.apply(pathsToTry, extensions.map(function (e) { return ({ type: "extension", path: physicalPath + e }); }));
- pathsToTry.push({
- type: "package",
- path: path.join(physicalPath, "/package.json"),
- });
- var indexPath = path.join(physicalPath, "/index");
- pathsToTry.push.apply(pathsToTry, extensions.map(function (e) { return ({ type: "index", path: indexPath + e }); }));
- };
- for (var _a = 0, _b = entry.paths; _a < _b.length; _a++) {
- var physicalPathPattern = _b[_a];
- _loop_1(physicalPathPattern);
- }
- }
- }
- return pathsToTry.length === 0 ? undefined : pathsToTry;
- }
- exports.getPathsToTry = getPathsToTry;
- // Not sure why we don't just return the full found path?
- function getStrippedPath(tryPath) {
- return tryPath.type === "index"
- ? (0, path_1.dirname)(tryPath.path)
- : tryPath.type === "file"
- ? tryPath.path
- : tryPath.type === "extension"
- ? (0, filesystem_1.removeExtension)(tryPath.path)
- : tryPath.type === "package"
- ? tryPath.path
- : exhaustiveTypeException(tryPath.type);
- }
- exports.getStrippedPath = getStrippedPath;
- function exhaustiveTypeException(check) {
- throw new Error("Unknown type ".concat(check));
- }
- exports.exhaustiveTypeException = exhaustiveTypeException;
- /**
- * Matches pattern with a single star against search.
- * Star must match at least one character to be considered a match.
- * @param patttern for example "foo*"
- * @param search for example "fooawesomebar"
- * @returns the part of search that * matches, or undefined if no match.
- */
- function matchStar(pattern, search) {
- if (search.length < pattern.length) {
- return undefined;
- }
- if (pattern === "*") {
- return search;
- }
- var star = pattern.indexOf("*");
- if (star === -1) {
- return undefined;
- }
- var part1 = pattern.substring(0, star);
- var part2 = pattern.substring(star + 1);
- if (search.substr(0, star) !== part1) {
- return undefined;
- }
- if (search.substr(search.length - part2.length) !== part2) {
- return undefined;
- }
- return search.substr(star, search.length - part2.length);
- }
- //# sourceMappingURL=try-path.js.map
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