function normalize()

in v4/en/builder/lib/esl.js [1320:1366]
19 lines of code
8 McCabe index (conditional complexity)

    function normalize(id, baseId) {
        if (!id) {
            return '';
        }

        baseId = baseId || '';
        var idInfo = parseId(id);
        if (!idInfo) {
            return id;
        }

        var resourceId = idInfo.res;
        var moduleId = resolvePackageId(
            relative2absolute(idInfo.mod, baseId)
        );

        // 根据config中的map配置进行module id mapping
        indexRetrieve(
            baseId,
            mappingIdIndex,
            function (value) {
                indexRetrieve(
                    moduleId,
                    value,
                    function (mdValue, mdKey) {
                        moduleId = moduleId.replace(mdKey, mdValue);
                    }
                );
            }
        );

        if (resourceId) {
            var mod = modIs(moduleId, MODULE_DEFINED) && actualGlobalRequire(moduleId);
            resourceId = mod && mod.normalize
                ? mod.normalize(
                    resourceId,
                    function (resId) {
                        return normalize(resId, baseId);
                    }
                  )
                : normalize(resourceId, baseId);

            moduleId += '!' + resourceId;
        }

        return moduleId;
    }