NativeScript/nativescript-core/ui/builder/module-name-sanitizer.ts

export function sanitizeModuleName(moduleName: string, removeExtension: boolean = true): string {
    moduleName = moduleName.trim();

    if (moduleName.startsWith("~/")) {
        moduleName = moduleName.substring(2);
    } else if (moduleName.startsWith("~")) {
        moduleName = moduleName.substring(1);
    } else if (moduleName.startsWith("/")) {
        moduleName = moduleName.substring(1);
    }

    if (removeExtension) {
        const extToRemove = ["js", "ts", "xml", "html", "css", "scss"];
        const extensionRegEx = new RegExp(`(.*)\\.(?:${extToRemove.join("|")})`, "i");
        moduleName = moduleName.replace(extensionRegEx, "$1");
    }

    return moduleName;
}