const tmp = require('tmp');

export function isNotInstalledError(error: Error): boolean {

return typeof (error) === 'object' && error !== null && ((<any>error).code === 'ENOENT' || (<any>error).code === 127);

}

export interface Deferred<T> {

resolve: (value?: T | PromiseLike<T>) => void;

reject: (reason?: any) => void;

promise: Promise<T>;

}

export function createDeferred<T>(): Deferred<T> {

let resolve: (value?: T | PromiseLike<T>) => void;

let reject: (reason?: any) => void;

let promise = new Promise<T>((res, rej) => {

resolve = res;

reject = rej;

});

return {

resolve, reject, promise

};

}

export function createTemporaryFile(extension: string, temporaryDirectory?: string): Promise<{ filePath: string, cleanupCallback: Function }> {

let options: any = { postfix: extension };

if (temporaryDirectory) {

options.dir = temporaryDirectory;

}

return new Promise<{ filePath: string, cleanupCallback: Function }>((resolve, reject) => {

tmp.file(options, function _tempFileCreated(err, tmpFile, fd, cleanupCallback) {

if (err) {

return reject(err);

}

resolve({ filePath: tmpFile, cleanupCallback: cleanupCallback });

});

});

}