Function computeModuleSpecifiers

test/fixtures/snapshot/typescript.js:122062–122123

(modulePaths, compilerOptions, importingSourceFile, host, userPreferences, options)

        }
        moduleSpecifiers_1.getModuleSpecifiersWithCacheInfo = getModuleSpecifiersWithCacheInfo;
        function computeModuleSpecifiers(modulePaths, compilerOptions, importingSourceFile, host, userPreferences, options) {
            if (options === void 0) { options = {}; }
            var info = getInfo(importingSourceFile.path, host);
            var preferences = getPreferences(host, userPreferences, compilerOptions, importingSourceFile);
            var existingSpecifier = ts.forEach(modulePaths, function (modulePath) { return ts.forEach(host.getFileIncludeReasons().get(ts.toPath(modulePath.path, host.getCurrentDirectory(), info.getCanonicalFileName)), function (reason) {
                if (reason.kind !== ts.FileIncludeKind.Import || reason.file !== importingSourceFile.path)
                    return undefined;
                // If the candidate import mode doesn't match the mode we're generating for, don't consider it
                // TODO: maybe useful to keep around as an alternative option for certain contexts where the mode is overridable
                if (importingSourceFile.impliedNodeFormat && importingSourceFile.impliedNodeFormat !== ts.getModeForResolutionAtIndex(importingSourceFile, reason.index))
                    return undefined;
                var specifier = ts.getModuleNameStringLiteralAt(importingSourceFile, reason.index).text;
                // If the preference is for non relative and the module specifier is relative, ignore it
                return preferences.relativePreference !== 1 /* RelativePreference.NonRelative */ || !ts.pathIsRelative(specifier) ?
                    specifier :
                    undefined;
            }); });
            if (existingSpecifier) {
                var moduleSpecifiers_2 = [existingSpecifier];
                return moduleSpecifiers_2;
            }
            var importedFileIsInNodeModules = ts.some(modulePaths, function (p) { return p.isInNodeModules; });
            // Module specifier priority:
            //   1. "Bare package specifiers" (e.g. "@foo/bar") resulting from a path through node_modules to a package.json's "types" entry
            //   2. Specifiers generated using "paths" from tsconfig
            //   3. Non-relative specfiers resulting from a path through node_modules (e.g. "@foo/bar/path/to/file")
            //   4. Relative paths
            var nodeModulesSpecifiers;
            var pathsSpecifiers;
            var relativeSpecifiers;
            for (var _i = 0, modulePaths_1 = modulePaths; _i < modulePaths_1.length; _i++) {
                var modulePath = modulePaths_1[_i];
                var specifier = tryGetModuleNameAsNodeModule(modulePath, info, importingSourceFile, host, compilerOptions, userPreferences, /*packageNameOnly*/ undefined, options.overrideImportMode);
                nodeModulesSpecifiers = ts.append(nodeModulesSpecifiers, specifier);
                if (specifier && modulePath.isRedirect) {
                    // If we got a specifier for a redirect, it was a bare package specifier (e.g. "@foo/bar",
                    // not "@foo/bar/path/to/file"). No other specifier will be this good, so stop looking.
                    return nodeModulesSpecifiers;
                }
                if (!specifier && !modulePath.isRedirect) {
                    var local = getLocalModuleSpecifier(modulePath.path, info, compilerOptions, host, preferences);
                    if (ts.pathIsBareSpecifier(local)) {
                        pathsSpecifiers = ts.append(pathsSpecifiers, local);
                    }
                    else if (!importedFileIsInNodeModules || modulePath.isInNodeModules) {
                        // Why this extra conditional, not just an `else`? If some path to the file contained
                        // 'node_modules', but we can't create a non-relative specifier (e.g. "@foo/bar/path/to/file"),
                        // that means we had to go through a *sibling's* node_modules, not one we can access directly.
                        // If some path to the file was in node_modules but another was not, this likely indicates that
                        // we have a monorepo structure with symlinks. In this case, the non-node_modules path is
                        // probably the realpath, e.g. "../bar/path/to/file", but a relative path to another package
                        // in a monorepo is probably not portable. So, the module specifier we actually go with will be
                        // the relative path through node_modules, so that the declaration emitter can produce a
                        // portability error. (See declarationEmitReexportedSymlinkReference3)
                        relativeSpecifiers = ts.append(relativeSpecifiers, local);
                    }
                }
            }