Function getNodeModulesPackageNameFromFileName

test/fixtures/snapshot/typescript.js:129305–129318

(importedFileName, moduleSpecifierResolutionHost)

            return false;
        }
        function getNodeModulesPackageNameFromFileName(importedFileName, moduleSpecifierResolutionHost) {
            if (!ts.stringContains(importedFileName, "node_modules")) {
                return undefined;
            }
            var specifier = ts.moduleSpecifiers.getNodeModulesPackageName(host.getCompilationSettings(), fromFile, importedFileName, moduleSpecifierResolutionHost, preferences);
            if (!specifier) {
                return undefined;
            }
            // Paths here are not node_modules, so we don’t care about them;
            // returning anything will trigger a lookup in package.json.
            if (!ts.pathIsRelative(specifier) && !ts.isRootedDiskPath(specifier)) {
                return getNodeModuleRootSpecifier(specifier);
            }
        }
        function getNodeModuleRootSpecifier(fullSpecifier) {
            var components = ts.getPathComponents(ts.getPackageNameFromTypesPackageName(fullSpecifier)).slice(1);
            // Scoped packages