&& (and) operator, 19

= assignment operator, 18

+= assignment operator, 18

-= assignment operator, 18

/= assignment operator, 18

*= assignment operator, 18

%= assignment operator, 18

` (backquotes), 404–405

{ } (curly braces), 20, 24, 415, 416, 429

/ (division) operator, 18

$ (dollar sign), 243

== (equal) operator, 19

=== (equal) operator, 19

' escape code, 29

" escape code, 29

\ escape code, 29

> (greater than) operator, 19

>= (greater than or equal to) operator, 19

++ (increment) operator, 18

< (less than) operator, 19

<= (less than or equal to) operator, 19

% (modulus) operator, 18

* (multiplication) operator, 18

! (not) operator, 19

!= (not equal) operator, 19

!== (not equal) operator, 19

|| (or) operator, 19

( ) (parentheses), 20, 24, 436, 457

| (pipe symbol), 426

- (subtraction) operator, 18

~ (tilde), 404–405

acceptsCharset property (Request object), 351

accessing MongoDB

access control, 209

authentication, 210–211

Database Administrator accounts, 211

User Administrator accounts, 209–210

from shell client, 203–204

command parameters, 205

shell commands, 204

shell methods, 205

shell scripts, 205–206

accounts (MongoDB)

Database Administrator accounts, 211

user accounts

creating, 206–207

listing, 206–207

removing, 209

roles, 208

User Administrator accounts, 209–210

ActivatedRoute, importing, 488

$add operator, 286

addCensoredWords() function, 52

addClass() method, 446

$addFields operator, 285

addition (+) operator, 17

addListener() function, 65

AddNums interface, 385

address() method, 143, 146

addShard() method, 339

addShardTag() method, 340

addTagRange() method, 340

$addToSet operator, 243, 286

addTrailers() method, 122

addUser() method, 228, 229

admin() method, 227, 229

Admin object, 229

aggregate() method, 283, 301, 317

aggregating results, 282–289

aggregate() method, 283

aggregation examples, 287–289

aggregation expression operators, 285–287

aggregation framework operators, 283–285

aggregation expression operators, 285–287

aggregation framework operators, 283–285

AJAX (Asynchronous JavaScript and XML) requests, 9

alerts, asynchronous, 516

all() method, 304, 346

$all operator, 264

allowDrop() method, 536

allowHalfOpen option, 86, 145

and() method, 303

and (&&) operator, 19

$and operator, 263

Angular. See also Node.js-to-Angular stack

adding to environment, 393–394

advantages of, 4, 13–14, 391

applications, creating, 395–396, 398–402

Angular bootstrapper, 399–402

animation application, 525–529

component modules, importing, 396–397

drag-and-drop application, 533–539

NgModule, 397–398

star rating application, 539–546

zoom application, 530–533

bootstrapper, 398–402

app.module.js, 401

app.module.ts, 400

first.component.js, 402

first.component.ts, 400

first.html listing, 399

browser events, 457–458

built-in directives, 441–442

attribute directives, 392, 445–448

components directives, 392, 442

structural directives, 392, 442–445

change detection, 465–468

CLI (command-line interface), 394–395

components, 396–397, 539–546

Angular bootstrapper components, 398–402

animation application components, 526–529

collections, 204

configuration, 403–404

constructors, 407

custom component directives, 452–456

deleting data in, 461–464

dependency injection, 392–393, 410–414

drag-and-drop application components, 534–538

emitting custom events from, 458

image zoom application components, 530–532

importing, 396–397

inline CSS and HTML in, 405–406

integrating custom services into, 503–504

nested components, 458–460

NgModule, 397–398

selectors, 404

separation of responsibilities, 393

star rating application components, 539–546

templates, 404–405, 408–410

custom directives, 449

custom attribute directives, 449–452

custom component directives, 452–456

custom events, 458

deleting data with, 461–464

emitting from components, 458

handling with listeners, 458

implementing in nested components, 458–460

data binding, 429

attribute binding, 433

class binding, 433–434

definition of, 392

event binding, 436–439

interpolation, 430–431

property binding, 431–433

style binding, 435–436

two-way binding, 439–440

definition of, 4

dependency injection, 392–393

event binding, 436–439

expressions, 415–416

basic expressions, 416–417

built-in pipes, 422–426

Component class interaction, 418–419

custom pipes, 426–428

pipe implementation, 422

TypeScript in, 419–422

modules, 392

observables

creating, 464–465

definition of, 464

detecting data changes with, 465–468

separation of responsibilities, 393

services

animate, 470

animation service, application using, 525–529

area-calc.service.ts, 506–510

constant data service, 505–506

definition of, 393

forms, 470

http, 470–486

integrating into applications, 503–504

mock back-end service, 540–541

purpose of, 469

ratings service, 541–542

router, 470, 487–501

service that returns a promise, 515–516

shared service, 516–523

use cases for, 503–504

UserService, 483–484

variable data service, 510–514

TypeScript, 383

in Angular expressions, 419–422

classes, 386

data types, 383–384

directives, 462–463

functions, 388–389

inheritance, 387

interfaces, 385–386

modules, 387–388

Angular QuickStart website, 394

animate service, 470

animated component

animated.component.css, 529

animated.component.html, 529

animated.component.ts, 527–528

animation application

animated.component.css, 529

animated.component.html, 529

animated.component.ts, 527–528

app.component.html, 526–527

app.component.ts, 526

app.module.ts, 525–526

folder structure, 525

anonymous functions, 25–26

any data type, 384

app.component.css listing

AreaCalcService, 509

custom directive with component, 454

drag-and-drop application, 535–536

RandomImageService, 513–514

router with navigation bar, 495

star rating application, 544

app.component.html listing

animation application, 526–527

AreaCalcService, 508–509

custom directive with component, 453–454

drag-and-drop application, 535

image zoom application, 531

PiService, 506

PromiseService, 516

RandomImageService, 513

router with navigation bar, 494

SharedService, 519

star rating application, 543–544

zoom directive, 451–452

app.component.ts listing

animation application, 526

AreaCalcService, 507–508

custom directive with component, 453

drag-and-drop application, 534–535

image zoom application, 530–531

PiService, 505

PromiseService, 515–516

RandomImageService, 512–513

router with navigation bar, 494

router with parameters, 498

SharedService, 519

simple router application, 490

star rating application, 543

append() method, 318

applications (Angular), 395–396, 398–402. See also components (Angular)

Angular bootstrapper

app.module.js, 401

app.module.ts, 400

first.component.js, 402

first.component.ts, 400

first.html, 399

animation application

animated.component.css, 529

animated.component.html, 529

animated.component.ts, 527–528

app.component.html, 526–527

app.component.ts, 526

app.module.ts, 525–526

folder structure, 525

component modules, importing, 396–397

drag-and-drop application

app.component.css, 535–536

app.component.html, 535

app.component.ts, 534–535

drag.component.css, 538

drag.component.html, 538

drag.component.ts, 538

drop.component.css, 537

drop.component.html, 537

drop.component.ts, 536

folder structure, 533–534

NgModule, 397–398

star rating application

app.component.css, 544

app.component.html, 543–544

app.component.ts, 543

app.module.ts, 540

folder structure, 539

mockbackend.service.ts, 540–541

rated-item.component.css, 545–546

rated-item.component.html, 545

rated-item.component.ts, 544–545

ratings.service.ts, 541–542

zoom application

app.component.html, 531

app.component.ts, 530–531

folder structure, 530

zoomit.component.css, 532

zoomit.component.html, 532

zoomit.component.ts, 531–532

applications (Node.js), censorify module

censortext.js, 49

creating, 49–50

loading into Node.js applications, 52–53

package.json, 50, 51

publishing to NPM Registry, 50–51

readwords.js, 52

app.module.js listing, 401

app.module.ts listing

Angular bootstrapper, 400

animation application, 525–526

simple mock server implementation, 473–474, 480

simple router implementation, 488–489

star rating application, 540

AppRoutingModule, importing, 488

app-routing.module.ts listing

router with navigation bar, 492–493

router with parameters, 498

simple router implementation, 489–490

arbiter servers, 331

arch() method, 162, 182

AreaCalcService, 506–510

app.component.css, 509

app.component.html, 508–509

app.component.ts, 507–508

area-calc.service.ts, 506–507

area-calc.service.ts listing, 506–507

argv method, 162

arithmetic operators, 17–18

Array object, 32–33

adding items to, 34–35

combining, 33–34

converting into strings, 34

iterating through, 34

manipulating, 32–33

methods, 32–33

removing items from, 34–35

searching, 34

arrays, 16

JavaScript

adding items to, 34–35

combining, 33–34

converting into strings, 34

iterating through, 34

manipulating, 32–33

methods, 32–33

removing items from, 34–35

searching, 34

Routes, defining, 486–487

TypeScript, 384

assert() function, 54

assertion testing module, 40, 190

assigning Express middleware

globally to path, 368

to single route, 368

assignment operators, 18

async pipe, 424

asynchronous alerts, 516

asynchronous file reading, 104–105

asynchronous file system calls, 95

asynchronous file writing, 99–101

Asynchronous JavaScript and XML (AJAX), 9

atomic write operations, 198

atomically modifying documents, 250–251

attachment() method, 353

attribute binding, 433

attribute directives, 392, 445–448

attribute.component.css, 448

attribute.component.html, 447

attribute.component.ts, 446–447

custom attribute directives, 449–452

definition of, 441

ngForm, 445

ngModel, 445

ngStyle, 445

attribute.component.css listing, 448

attribute.component.html listing, 447

attribute.component.ts listing, 446–447

--auth parameter (mongod command), 203

auth property (URL object), 116

authenticate() method, 228, 229

authentication

HTTP, 375–377

MongoDB, 210–211

session, 377–380

author directive, 47

auto_reconnect option (server object), 224

autoIndex option (Schema object), 295

autoIndexID option (collections), 214

$avg operator, 286

backend services, 10

backing up MongoDB, 341–342

backquotes (`), 404–405

backspace escape code, 30

Bad Guys component

badguys.component.css, 522

badguys.component.html, 522

badguys.component.ts, 521

base64 encoding, 75

basicAuth middleware, 368, 375–377

basicExpressions.component.ts listing, 417

big endian, 75

bin directives, 47

--bind parameter (mongod command), 203

binding. See data binding

$bit operator, 244

blocking I/O, 57–58

bodyParser middleware, 368, 371–372

Boolean data type

JavaScript, 16

TypeScript, 383

bootstrap metadata option (NgModule), 397

bootstrapper (Angular), 398–402

app.module.js, 401

app.module.ts, 400

first.component.js, 402

first.component.ts, 400

first.html listing, 399

border() function, 450

brackets ({ }), 415, 416

break statement, 23–24

browser events, 457–458

browser view, rendering, 9–10

BrowserAnimationsModule, loading, 526

browsers, 8

browser events, 457–458

browser view, rendering, 9–10

browser-to-webserver communication, 8–9

user interaction, 10

browser-to-webserver communication, 8–9

BSON, 192

$bucket operator, 285

$bucketAuto operator, 285

buffer module. See buffers

buffer_concat.js listing, 81

buffer_copy.js listing, 79

buffer_read.js listing, 78

buffer_slice.js listing, 80

buffer_write.js listing, 77

bufferCommands option (Schema object), 295

buffers, 74–75

compressing/decompressing, 91–92

concatenating, 81

copying, 79–80

creating, 75–76

determining length of, 78

encoding methods, 75

reading from, 77–78

slicing, 80

writing to, 76–77

bufferSize property (Socket object), 143

building templates, 404–405

built-in directives, 441–442

attribute directives, 392, 445–448

attribute.component.css, 448

attribute.component.html, 447

attribute.component.ts, 446–447

definition of, 441

ngForm, 445

ngModel, 445

ngStyle, 445

components directives, 392, 441, 442

structural directives, 392, 442–445

definition of, 441

ngFor, 442, 474, 479, 484, 513

ngIf, 442–443

ngSwitch, 442–443

ngSwitchCase, 442, 443

ngSwitchDefault, 442

structural.component.ts, 443–444

built-in events, 457–458

built-in pipes

builtInPipes.component.ts, 425

table of, 422–424

built-in services

animate, 470

forms, 470

http, 470

GET requests, sending, 470–471

JSON file implementation and access, 472–475

PUT requests, sending, 470–471

request configuration, 471

response callback functions, 471

simple mock server implementation, 475–481

simple mock server updates, 481–486

router, 470

ActivatedRoute, importing, 488

route navigation, 488

route object parameters, 487

Router, importing, 488

router with navigation bar, 492–497

router with parameters, 497–501

Routes array, 486–487

routing module, including, 488

simple router implementation, 488–491

builtInPipes.component.ts listing, 425

byteLength() method, 78

bytesRead property (Socket object), 144

bytesWritten property (Socket object), 144

htp.createServer(), 136

https.request(), 136

tls.connect(), 154

tls.createServer(), 155

callback functions, 67

applying for defined parameters, 348–349

chaining, 70

implementing closure in, 68–69

passing parameters to, 67–68

callback_chain.js listing, 70

callback_closure.js listing, 69

callback_parameter.js listing, 67–68

canActivate property (route object), 487

canActivateChild property (route object), 487

canDeactivate property (route object), 487

canLoad property (route object), 487

capped collections, 197–198, 330

capped option

collections, 214

Schema object, 295

carriage return escape code, 29

Cascading Style Sheets. See CSS (Cascading Style Sheets)

case sensitive routing setting (Express), 344

catch() method, 471

catch statement, 35–36

C/C++ add-ons, 40, 190

censor() function, 52

censorify module

censortext.js, 49

creating, 49–50

loading into Node.js applications, 52–53

package.json, 50, 51

publishing to NPM Registry, 50–51

readwords.js, 52

censortext.js listing, 49

cert option

htp.createServer(), 136

https.request(), 136

tls.connect(), 154

certificate class, 188

chaining callback functions, 70

change detection, 465–468

(change) event, 457

changeLoop() method, 510

changeSize() function, 450

character.component.css listing, 462

character.component.html listing, 462

character.component.ts listing, 461–462

charAt() method, 30

charCodeAt() method, 30

charObservable, 517

chdir() method, 162

checkContinue event, 124

checkGoal() function, 66

checkKeys option, 242

child components, deleting parent data from, 461–464

child forks, 171–173

child processes, 159–160

child forks, 171–173

ChildProcess object, 164–166

executable files, executing on another process, 168–169

processes, spawning, 169–171

system command, executing on another process, 166–168

child_exec.js listing, 167–168

child_fork.js listing, 172–173

child_process module, 40, 159–160

child forks, 171–173

ChildProcess object, 164–166

executable files, executing on another process, 168–169

processes, spawning, 169–171

system command, executing on another process, 166–168

child_process_exec_file.js listing, 168–169

child_process_spawn_file.js listing, 170–171

ChildProcess object, 164–166

Children property (route object), 487

cipher class, 188

ciphers option

htp.createServer(), 136

https.request(), 136

tls.createServer(), 155

class binding, 433–434

class.component.ts listing, 434

classes. See also services (Angular)

binding, 433–434

certificate, 188

cipher, 188

Component, 418–419

decipher, 188

defining, 386

diffieHellman, 188

@directive, 449

eCDH, 188

EventEmitter, 458

export classes

Directive, 449

ZoomDirective, 451

hash, 189

hmac, 189

inheritance, 387

MongoClient, 222

pipe, 426

SecretAgent, 387

sign, 189

verify, 189

classExpressions.component.ts listing, 418–419

clearCookie() method, 373

clearImmediate() function, 62

clearInterval() function, 61

clearTimeout() function, 60

CLI (command-line interface), 394–395. See also commands

(click) event, 457

clientError event, 124, 156

ClientRequest object, 118–121

clients

HTTPS clients, 135–136

TCP socket clients, 147–150

TLS socket clients, 153–154

client-side scripts, 9

close event, 82, 121, 123, 124, 142, 145, 165

close() method, 97, 125, 146, 227, 233

closeSync() method, 97

closing files, 96–97

closure in callback functions, 68–69

cluster module, 40, 174

events, 174

HTTP clusters, 176–179

methods, 175

properties, 175

Worker object, 175–176

cluster_server.js listing, 177–179

clusterAdmin role (MongoDB), 208

clusters

cluster module, 40, 174

events, 174

HTTP clusters, 176–179

methods, 175

properties, 175

Worker object, 175–176

sharded MongoDB clusters, 338

adding shards to cluster, 339

config server database instances, 338

query router servers, 338–339

code listings. See listings

collection() method, 228, 230

Collection object, 229–232. See also collections (MongoDB)

collection option (Schema object), 295

collection_create_list_delete.js listing, 238–239

collection_stat.js listing, 239–240

collectionInfo() method, 227

collectionNames() method, 227

collections (MongoDB)

capped collections, 197–198, 330

Collection object, 229–232

collection_create_list_delete.js application example, 238–239

creating, 214–215, 237

definition of, 192

deleting, 215–216, 238

displaying list of, 214

documents

adding, 217, 244–246, 307–309

aggregating with Mongoose, 317–320

atomically modifying, 250–251

counting, 268–269

Document object, 304–305

finding, 216, 265–268, 305–307

removing, 217–218, 255–258, 314–317

retrieving, 246–248

saving, 252–253, 310–311

updating, 218–219, 248–250, 309–314

upserting, 253–254

listing, 237

number of, 199

sharding on, 340

statistics for, 239–240

collections command, 204

collections() method, 228, 237

$collStatus operator, 284

combining

arrays, 33–34

strings, 31

command-line interface, 394–395. See also commands

command-line options module, 40

commands. See also directives

databases, 204

db.help, 204

dbs, 204

executing in another process, 166–168

exit, 204

help, 204

mongod, 202–203

mongodump, 342

ng eject, 395

ng generate component, 395

ng generate directive, 395

ng generate enum, 395

ng generate guard, 395

ng generate interface, 395

ng generate module, 395

ng generate pipe, 395

ng generate service, 395

ng new, 395

ng serve, 395

npm, 42, 44–45

npm adduser, 50

npm install, 46, 51

npm pack, 50

npm search, 45

npm install, 475

profile, 204

roles, 204

show, 204

use, 204

users, 204

comment() method, 302

comment option (options object), 265

communication, browser-to-webserver, 8–9

comparison operators, 19–20

compatibility of Angular, 14

compiling models, 298

Component class, 418–419

component directives, 441

component property (route object), 487

components (Angular), 396–397, 539–546. See also services (Angular)

Angular bootstrapper, 398–402

animation application, 526–527

animated.component.css, 529

animated.Component.html, 529

animated.component.ts, 527–528

app.component.ts, 526

app.module.ts, 525–526

folder structure, 525

collections, 204

configuration, 403–404

constructors, 407

custom component directives, 452–456

container component, 454

CSS for container component, 455

CSS for root component, 454

HTML for container component, 455

HTML for root component, 453–454

root component, 453

deleting data in, 461–464

dependency injection

building nested components with, 410–412

definition of, 392–393, 410

passing data with, 412–413

sample application with inputs, 413–414

drag-and-drop application

app.component.css, 535–536

app.component.html, 535

app.component.ts, 534–535

drag.component.css, 538

drag.component.html, 538

drag.component.ts, 538

drop.component.css, 537

drop.component.html, 537

drop.component.ts, 536

folder structure, 533–534

emitting custom events from, 458

image zoom application

app.component.html, 531

app.component.ts, 530–531

folder structure, 530

zoomit.component.css, 532

zoomit.component.html, 532

zoomit.component.ts, 531–532

importing, 396–397

inline CSS and HTML in, 405–406

integrating custom services into, 503–504

nested components, 458–460

NgModule, 397–398

selectors, defining, 404

separation of responsibilities, 393

star rating application

app.component.css, 544

app.component.html, 543–544

app.component.ts, 543

app.module.ts, 540

folder structure, 539

mockbackend.service.ts, 540–541

rated-item.component.css, 545–546

rated-item.component.html, 545

rated-item.component.ts, 544–545

ratings.service.ts, 541–542

templates

building, 404–405

external templates, 408–410

components directives, 392, 442

compound indexes, 328

compress middleware, 368

compressing

buffers, 91–92

streams, 92–93

concat() method, 30, 31, 33–34, 81

$concat operator, 287

concatenating buffers, 81

conditionals

if statements, 20

switch statements, 20–21

config method, 161

--config parameter (mongod command), 202

config servers, creating, 338

configuration

components, 403–404

selectors, 404

templates, 404–405

Express, 343–344

HTTP requests, 471

MongoDB authentication, 210–211

query database operation, 299–302

connect event, 120, 124, 141

connect() method, 56, 140, 147, 154, 223, 292

connected property (ChildProcess object), 166

connecting to MongoDB

MongoClient class, 222

MongoClient object, 223–226

Mongoose, 292–294

write concern, 222

connection event, 124, 145

Connection object, 292–293

connectionTimeOut option (server object), 224

console, writing data to, 53–54

console module, 40, 53–54

constant data service, 505–506

app.component.html, 506

app.component.ts, 505

pi.service.ts, 505

constructor.component.ts listing, 407

constructors, 407

container component, 454

CSS for, 455

HTML for, 455

container directive

container.component.css, 455

container.component.html, 455

container.component.ts, 454

content, generating with CLI (command-line interface), 394–395

continue event, 120

continue statement, 23–24

contributors directive, 47

converting

arrays to strings, 34

JavaScript objects to JSON, 74

JSON to JavaScript objects, 74

objects to strings, 184–185

cookie() method, 373, 378

cookieParser middleware, 368, 373–374

cookies

cookie sessions, 374–375

sending/receiving, 373–374

cookieSession middleware, 368, 374–375

copy() method, 79

copyDatabase() method, 213

copying

buffers, 79–80

databases, 213

count() method, 231, 233, 268–269, 300

$count operator, 285

counting documents, 268–269

cpus() method, 182

create() method, 300, 307

createAlert() method, 515

createCollection() method, 214, 228, 234, 237, 330

createConnection() method, 140

createDb() method, 481

createDelete.component.CSS listing, 479–480

createDelete.component.html listing, 479

createDelete.component.ts listing, 477–478

createReadStream() method, 105–106

createServer() method, 124, 126, 128, 136, 150, 154–156, 345

createTimedAlert() method, 515

createUser() method, 207, 208, 476, 478

createWriteStream() method, 101–102

crl option

htp.createServer(), 136

https.request(), 136

tls.createServer(), 155

crypto module, 41, 188–190

csrf middleware, 368

CSS (Cascading Style Sheets)

files, 9

inline CSS in Angular applications, 405–406

listings

app.component.css, 454, 495, 513–514, 535–536, 544

attribute.component.css, 448

character.component.css, 462

container.component.css, 455

details.component.css, 463

drag.component.css, 538

drop.component.css, 537

external.css, 409

http.component.CSS, 474–475

outer.css, 411

rated-item.component.css, 545–546

./static/css/static.css, 370

update.component.CSS, 485–486

zoomit.component.css, 532

curly braces ({ }), 20, 24, 429

currency pipe, 423

current database, changing, 211–212

Cursor object, 232–233

custom Angular services, 503

constant data service, 505–506

app.component.html, 506

app.component.ts, 505

pi.service.ts, 505

data transform service, 506–510

app.component.css, 509

app.component.html, 508–509

app.component.ts, 507–508

area-calc.service.ts, 506–507

integrating into applications, 503–504

mock back-end service, 540–541

ratings service, 541–542

service that returns a promise, 515–516

shared service, 516–523

app.component.html, 519

app.component.ts, 519

badguys.component.css, 522

badguys.component.html, 522

badguys.component.ts, 521

good-guys.component.css, 521

good-guys.component.html, 520

good-guys.component.ts, 520

shared.service.ts, 517–518

use cases for, 503–504

variable data service, 510–514

app.component.css, 513–514

app.component.html, 513

app.component.ts, 512–513

random-image.service.ts, 511–512

custom directives, 449

custom attribute directives, 449–452

custom component directives, 452–456

container component, 454

CSS for container component, 455

CSS for root component, 454

HTML for container component, 455

HTML for root component, 453–454

root component, 453

custom events, 64–65, 457

deleting data with, 461–464

emitting from components, 458

handling with listeners, 458

implementing in nested components, 458–460

custom middleware, 380–381

custom pipes, 426–428

custom-defined objects, 28

customevent.component.html listing, 459–460

customevent.component.ts listing, 459

customPipes.component.ts listing, 427

custom.pipe.ts listing, 427

cwd() method, 162

cwd property

exec() and execFile() methods, 166

fork() function, 172

spawn() function, 170

data binding, 429

attribute binding, 433

class binding, 433–434

definition of, 392

event binding, 436–439

interpolation, 430–431

property binding, 431–433

style binding, 435–436

two-way binding, 439–440

data changes, detecting with observables, 465–468

data denormalization, 196–197

data event, 82, 141

data I/O

buffers, 74–75

compressing/decompressing, 91–92

concatenating, 81

copying, 79–80

creating, 75–76

determining length of, 78

encoding methods, 75

reading from, 77–78

slicing, 80

writing to, 76–77

JSON (JavaScript Object Notation), 73

converting JavaScript objects to, 74

converting to JavaScript objects, 74

streams, 81

compressing/decompressing, 92–93

Duplex streams, 86–88

piping, 89–90

Readable streams, 82–84, 89–90

Transform streams, 88–89

Writable streams, 84–86, 89–90

data life cycles, 199

data model, planning, 194–195

data normalization, 195–196

data passing with dependency injection, 412–413

Data property (route object), 487

data transform service, 506–510

app.component.css, 509

app.component.html, 508–509

app.component.ts, 507–508

area-calc.service.ts, 506–507

data types

JavaScript, 16–17

MongoDB, 193–194

TypeScript, 383–384

data usability, 200

Database Administrator accounts, 211

databases (MongoDB). See also collections (MongoDB)

changing current, 211–212

connecting to using Mongoose, 292–294

copying, 213

creating, 212, 234

database change options, 241–242

db_create_list_delete.js sample application, 234–236

deleting, 212–213, 234

displaying list of, 211

implementing schemas on, 295–296

listing, 233

query database operation

options, 301–302

setting, 299–301

repairing, 341

update operators, 242–244

databases command, 204

data.service.ts listing, 476, 481–482

date pipe, 423

db() method, 227

Db object, 227–228

db_connect_object.js listing, 226

db_connect_url.js listing, 225

db_create_list_delete.js listing, 234–236

db_status.js listing, 236–237

dbAdmin role (MongoDB), 208

dbAdminAnyDatabase role (MongoDB), 208

db.auth() method, 205

db.help command, 204

--dbpath parameter (mongod command), 203

dbs command, 204

debounce() method, 471

debugger module, 41

decipher class, 188

declarations metadata, 397, 410

decompressing

buffers, 91–92

streams, 92–93

decorators

@NgModule, 397–398, 410

@pipe, 426

defined parameters, applying route parameters with, 348

deflate() method, 91

deflateRaw() method, 91

delaying work

interval timers, 61–62

timeout timers, 60–61

delete() method, 470

deleteChar() method, 461

deleteUser() method, 476, 478

deleting data, 461–464

array items, 34–35

collections, 215–216, 238

databases, 212–213

directories, 111–112

documents, 217–218

findAndRemove() method, 257–258

with Mongoose, 314–317

remove() method, 217–218, 255–256

event listeners, 65

files, 110

MongoDB user accounts, 209

denormalizing data, 196–197

dependencies directive, 48

dependency injection

building nested components with, 410–412

definition of, 392–393, 410

passing data with, 412–413

sample application with inputs, 413–414

deploying

replica sets, 333–334

sharded MongoDB clusters, 338

adding shards to cluster, 339

config server database instances, 338

query router servers, 338–339

dereferencing timers, 63

description directive, 47

destroy() method, 142, 378

detached property (spawn() function), 170

details.component.css listing, 463

details.component.html listing, 463

details.component.ts listing, 462–463

detecting data changes, 465–468

diffieHellman class, 188

dir() function, 53

@directive class, 449

Directive class, 449

directives. See also commands

author, 47

bin, 47

built-in directives, 441–442

attribute directives, 392, 445–448

components directives, 392, 442

structural directives, 392, 442–445

contributors, 47

custom directives, 449

custom attribute directives, 449–452

custom component directives, 452–456

definition of, 441

dependencies, 48

description, 47

engines, 48

keywords, 48

main, 47

name, 47

preferGlobal, 47

repository, 48

scripts, 47

version, 47

directories

creating, 111–112

deleting, 111–112

node_modules, 221

renaming, 112

disable() method, 344

disabled() method, 344

disconnect event, 165, 174, 176

disconnect() method, 165, 175, 176, 292

distinct field values, finding, 276–277

distinct() method, 231, 276–277, 300

$divide operator, 286

division (/) operator, 18

dns module, 41, 186–188

dns_lookup.js listing, 187–188

doc_aggregate.js listing, 288

doc_count.js listing, 268–269

doc_delete_one.js listing, 257–258

doc_delete.js listing, 255–256

doc_distinct.js listing, 277

doc_fields.js listing, 271–272

doc_find.js listing, 247–248

doc_group.js listing, 279–280

doc_insert.js listing, 245–246

doc_limit.js listing, 270–271

doc_modify.js listing, 251

doc_paging.js listing, 273–274

doc_query.js listing, 266–268

doc_save.js listing, 252–253

doc_sort.js listing, 275–276

doc_update.js listing, 249–250

doc_upsert.js listing, 253–254

doCalc() function, 26

doCircle() method, 507

Document object, 292, 304–305

Document Object Model. See DOM (Document Object Model)

documents (MongoDB)

adding

insert() method, 217, 244–246

with Mongoose, 307–309

aggregating with Mongoose, 317–320

atomically modifying, 250–251

counting, 268–269

data denormalization, 196–197

data normalization, 195–196

embedded documents, 196–197

finding

find() method, 216

with Mongoose, 305–307

sets of documents, 265–268

getting from collections, 246–248

growth of, 198

Mongoose Document object, 304–305

paths, 294

references, 195–196

removing

findAndRemove() method, 257–258

with Mongoose, 314–317

remove() method, 217–218, 255–256

saving

with Mongoose, 310–311

save() method, 252–253

structure of, 192–193

TTY (time-to-live), 199

updating

findAndRemove() method, 218–219

with Mongoose, 311–314

update() method, 248–250

upserting, 253–254

dollar sign, 243

DOM (Document Object Model), 9

doRectangle() method, 507

doSquare() method, 507

doTrapezoid() method, 507

doTriangle() method, 507

double curly braces ({{}}), 429

do/while loops, 22

download responses, sending, 359

downloading MongoDB, 202

drag-and-drop application

app.component.css, 535–536

app.component.html, 535

app.component.ts, 534–535

drag.component.css, 538

drag.component.html, 538

drag.component.ts, 538

drop.component.css, 537

drop.component.html, 537

drop.component.ts, 536

folder structure, 533–534

drag-item component

app.component.css, 535–536

app.component.html, 535

app.component.ts, 534–535

drag.component.css, 538

drag.component.html, 538

drag.component.ts, 538

drain event, 84, 142

driver. See MongoDB Node.js driver

drop() method, 215, 232

dropCollection() method, 228, 238

dropDatabase() method, 213, 228, 234

drop-item component

app.component.css, 535–536

app.component.html, 535

app.component.ts, 534–535

drop.component.css, 537

drop.component.html, 537

drop.component.ts, 536

dropping. See deleting data

dummyDB.JSON listing, 472

Duplex streams, 86–88

dynamic GET servers, 127–129

$each operator, 244

eCDH class, 188

EJS template

creating, 361–363

implementing, 363–364

elements of arrays, adding/removing, 34–35

$elemMatch, 266

elemMatch() method, 304

$elemMatch operator, 264

embedded documents, 196–197

emit() method, 64, 458

emitter_listener.js listing, 66–67

emitting custom events, 458

enable() method, 344

enabled() method, 344

enableSharding() method, 339–340

encoding methods, 75

encoding property

exec() method, 167

execFile() method, 167

fork() function, 172

encrypt_password.js listing, 189

end event, 82, 141

end() method, 85, 120, 122, 127, 142

endian, 75

endianness() method, 181

engine() method, 360

engines, template, 360

defining, 360–361

locals, adding, 361

rendered templates, sending, 363–364

template creation, 361–363

engines directive, 48

ensureIndex() method, 329

entryComponents metadata option (NgModule), 397

enum data type, 384

env method, 162

env property

exec() and execFile() methods, 166

fork() function, 172

spawn() function, 170

env setting (Express), 344

environment, adding Angular to, 393–394

$eq operator, 263

equal sign (=), 18

equality operators, 19

equals() method, 304

error event, 82, 142, 145, 165, 176

error() function, 53

error handling, 35

finally keyword, 36–37

throwing errors, 36

try/catch blocks, 35–36

errors module, 41

errors property (Document object), 305

escape codes, 29–30

event binding, 436–439

event listeners

adding to objects, 65

implementing, 65–67

removing from objects, 65

event queue, scheduling work on, 59–60

event.component.ts listing, 436–438

EventEmitter object, 64–65, 458

eventHandler() method, 459

events, 55–56

binding, 436–439

blocking I/O, 57–58

browser events, 457–458

callbacks, 67

chaining, 70

implementing closure in, 68–69

passing parameters to, 67–68

ClientRequest object, 120

cluster module, 174

conversation metaphor, 57–59

custom events, 64–65, 458

deleting data with, 461–464

emitting from components, 458

handling with listeners, 458

implementing in nested components, 458–460

event callbacks, 55–56

event listeners

adding to objects, 65

implementing, 65–67

removing from objects, 65

event queue, scheduling work on, 59–60

IncomingMessage object, 123

process signals, 160

Readable streams, 82

Server object, 124, 145

ServerResponse object, 121

Socket object, 141–142

threaded models, 55–56

Worker object, 176

Writable streams, 84

events module, 41. See also events

exec() method, 166–168, 318

execArgv method, 162

execFile() method, 168–169

execPath method, 162

execPath property (fork() function), 172

executable files, executing on another process, 168–169

executables

mongod.exe, 202

Node.js executables, verifying, 42–43

executing

executable files on another process, 168–169

processes, 161

system commands on another process, 166–168

exist event, 165

exists() method, 106–107, 303

$exists operator, 263

existsSync() method, 106–107

exit command, 204

exit event, 174, 176

exit() method, 161

explain option (options object), 264

export classes

Directive, 449

ZoomDirective, 451

export keyword, 392

exporting modules, 392

exports metadata option (NgModule), 397

Express, 13, 343

configuring, 343–344

installing, 343

middleware, 367–368

assigning globally to path, 368

assigning to single route, 368

basicAuth, 368, 375–377

bodyParser, 368, 371–372

compress, 368

cookieParser, 368, 373–374

cookieSession, 368, 374–375

csrf, 368

custom, 380–381

favicon, 367

functions, 369

logger, 367

query, 368, 369

session, 368, 377–380

static, 367, 369–371

Request objects, 350–352

Response objects, 352

download responses, 359

files in, 356–358

headers, 352–353

JSON responses, 355–357

redirection, 359

rendered templates in, 363–364

sending, 353–355

status, 353

routes

applying parameters in, 347–350

definition of, 345

implementing, 346

server, starting, 345

template engines, 360

defining, 360–361

locals, adding, 361

rendered templates, sending, 363–364

template creation, 361–363

express_auth_one.js listing, 376

express_auth_session.js listing, 378–379

express_auth.js listing, 376

express_cookies.js listing, 373–374

express_http_https.js listing, 345

express_json.js listing, 356

express_middleware.js listing, 381

express_post.js listing, 372

express_redirect.js listing, 359

express_request.js listing, 351

express_routes.js listing, 349–350

express_send_file.js listing, 358

express_send.js listing, 354

express_session.js listing, 374–375

express_static.js listing, 370

express_templates.js listing, 363–364

expressions, 415–416

basic expressions, 416–417

Component class interaction, 418–419

pipes

built-in pipes, 422–426

custom pipes, 426–428

definition of, 422

TypeScript in, 419–422

extensibility

of Angular, 14

of Node.js, 3, 12

external sources, interacting with, 132–134

external templates, 408–410

external.component.ts listing, 409

external.css listing, 409

externalTemplate.html listing, 409

--f parameter (mongod command), 202

$facet operator, 285

@fadeState, 527–529

favicon middleware, 367

feed() function, 386

fields

distinct field values, finding, 276–277

limiting results by, 271–272

naming conventions, 193

required fields, forcing, 296

unique fields, 296

fields option (options object), 264

file system, 41, 95

asynchronous file system calls, 95

directories

creating, 111–112

deleting, 111–112

renaming, 112

files

deleting, 110

listing, 108–110

opening/closing, 96–97

reading, 102–106

renaming, 112

returning statistics about, 107–108

truncating, 110–111

verifying path of, 106–107

watching for file changes, 112–113

writing, 97–102

synchronous file system calls, 95

file_read_async.js listing, 105

file_read_stream.js listing, 106

file_read_sync.js listing, 103–104

file_readdir.js listing, 109–110

file_read.js listing, 102–103

file_stats.js listing, 108

file_write_async.js listing, 100–101

file_write_stream.js listing, 101

file_write_sync.js listing, 99

file_write.js listing, 98

files. See also listings

deleting, 110

executing in another process, 168–169

listing, 108–110

node, 42

opening/closing, 96–97

package.json file, 47–48

reading

asynchronous file reading, 104–105

simple file read, 102–103

streamed file reading, 105–106

synchronous file reading, 103–104

renaming, 112

returning statistics about, 107–108

sending in responses, 356–358

static files, serving, 125–127, 369–371

truncating, 110–111

verifying path of, 106–107

watching for file changes, 112–113

writing

asynchronous file writing, 99–101

simple file write, 98

streaming file writing, 101–102

synchronous file writing, 98–99

fill() method, 76

finally keyword, 36–37

find() method, 216, 231, 246–248, 265–268, 299, 300, 306

findAndModify() method, 231, 250–251

findAndRemove() method, 231, 257, 300

findOne() method, 231, 246–248, 300, 305

findOneAndUpdate() method, 301

finish event, 84

$first operator, 286

first.component.js listing, 402

first.component.ts listing, 400

first.html listing, 399

flush() method, 88

(focus) event, 457

folders, node_modules, 42

forceServerObjectId option, 242

forcing required fields, 296

for/in loops, 23

fork event, 174

fork() method, 171–173

forks, 171–173

for loops, 22–23

form feed escape code, 30

form parameters, processing, 117–118

format() method, 183–184

formatGreeting() function, 25

formatting strings, 183–184

forms service, 470

frameworks. See Angular; Node.js

freemem() method, 182

fresh property (Request object), 351

fromCharCode() method, 30

fs module. See file system

fsync option, 242

functions, 24. See also individual functions (for example, doCalc() function)

anonymous functions, 25–26

callback functions, 67

applying for defined parameters, 348–349

chaining, 70

implementing closure in, 68–69

passing parameters to, 67–68

defining, 24

passing variables to, 24–25

returning values from, 25

TypeScript functions, 388–389

$geoNear operator, 285

geospatial indexes, 328

get() method, 304, 344, 352, 470

GET requests

definition of, 9

dynamic GET servers, 127–129

response callback functions, 471

sending, 470–471

GET servers, 127–129

getCensoredWords() function, 52

getCharacters() method, 517

getConnections() method, 146

GetData requests, 55–56

GetFile requests, 55–56

getgid() method, 162

getgroups() method, 163

getHeader() method, 122

getItems() method, 541

getObservable() method, 541, 543

getPi() method, 505

getRandom() function, 510

getRandomImage() method, 512

getSiblingDB() method, 212

getStarClass() method, 544–545

getuid() method, 162

getUsers() method, 476, 482

getWeather() function, 132

gid property (spawn() function), 170

global module, 41, 190

Good Guys component

good-guys.component.css, 521

good-guys.component.html, 520

good-guys.component.ts, 520

gotoPage2() function, 498–499

$graphLookup operator, 285

greater than (>) operator, 19

greater than or equal to (>=) operator, 19

greeting() function, 25

group() method, 277–282, 318

$group operator, 284

grouping results, 277–282

growth of MongoDB documents, 198

gt() method, 303

$gt operator, 263

gte() method, 303

$gte operator, 263

gunzip() method, 91

gzip() method, 91

hash class, 189

hash property (URL object), 117

hash-based sharding, 337

hashed indexes, 329

head() method, 470

headers, 10, 352–353

headers property (IncomingMessage object), 123

headersSent event, 121

help command, 204

--help parameter (mongod command), 202

Hex encoding, 75

high availability, 3, 13

hint() method, 302

hint option (options object), 264

hitCharacter() method, 517–520

hmac class, 189

home.component.html listing, 490

home.component.ts listing, 490

honorCipherOrder option (tls.createServer), 155

host property

ClientRequest object, 119

URL object, 116

hostname() method, 181

hostname property

ClientRequest object, 119

Request object, 351

URL object, 116

href property (URL object), 116

hrtime() method, 162

HTML (Hypertext Markup Language)

events, Angular syntax for, 457–458

files, 9

inline HTML in Angular applications, 405–406

listings

animated.Component.html, 529

app.component.html. See app.component.html listing

app.module.ts, 480

attribute.component.html, 447

badguys.component.html, 522

character.component.html, 462

container.component.html, 455

createDelete.component.html, 479

customevent.component.html, 459–460

details.component.html, 463

drag.component.html, 538

drop.component.html, 537

externalTemplate.html, 409

first.html, 399

good-guys.component.html, 520

home.component.html, 490

http.component.html, 474

observable.component.html, 467

outer.html, 411

page1.component.html, 499

page2.component.html, 496, 500

page3.component.html, 496

rated-item.component.html, 545

route2.component.html, 491

update.component.html, 484–485

user_ejs.html, 362

zoomit.component.html, 532

router-outlet tag, 488

HTTP (Hypertext Transfer Protocol), 8, 115. See also http service

authentication, 375–377

clusters, 176–179

headers, 10

HTTPS, 8, 134–135

certificate signing request files, 135

HTTPS clients, 135–136

HTTPS servers, 137

private keys, 135

query string and form parameter processing, 117–118

requests, 9

ClientRequest object, 118–121

methods, 350–352

POST, 371–372

properties, 350–352

responses, 352

download responses, 359

files in, 356–358

headers, 352–353

IncomingMessage object, 122–123

JSON responses, 355–357

redirecting, 359

rendered templates in, 363–364

sending, 353–355

ServerResponse object, 121–122

status, 353

servers

dynamic GET servers, 127–129

external sources, interacting with, 132–134

POST servers, 130–131

Server object, 123–125

static files, serving, 125–127

URLs (Uniform Resource Locators)

resolving, 117

structure of, 115–116

URL object, 116–117

http module. See HTTP (Hypertext Transfer Protocol)

http service, 470

GET requests, sending, 470–471

JSON file implementation and access, 472–475

app.module.ts, 473–474

dummyDB.JSON, 472

http.component.CSS, 474–475

http.component.html, 474

http.component.ts, 473

PUT requests, sending, 470–471

request configuration, 471

response callback functions, 471

simple mock server implementation, 475–481

app.module.ts, 480

createDelete.component.CSS, 479–480

createDelete.component.html, 479

createDelete.component.ts, 477–478

creating, 475

data.service.ts, 476

user.service.ts, 478–479

simple mock server updates, 481–486

data.service.ts, 481–482

update.component.CSS, 485–486

update.component.html, 484–485

update.component.ts, 482–483

user.service.ts, 483–484

http_client_get.js listing, 128

http_client_post.js listing, 131

http_client_static.js listing, 126–127

http_server_external listing, 132–133

http_server_get.js listing, 128

http_server_post.js listing, 130

http_server_static.js listing, 126

http.component.CSS listing, 474–475

http.component.html listing, 474

http.component.ts listing, 473

HttpModule, importing, 473–474

https module, 41, 134–135

certificate signing request files, 135

HTTPS clients, 135–136

HTTPS servers, 137

private keys, 135

httpVersion property (IncomingMessage object), 123

Hypertext Markup Language. See HTML (Hypertext Markup Language)

Hypertext Transfer Protocol. See HTTP (Hypertext Transfer Protocol)

id metadata option (NgModule), 397

id property

Document object, 304

Schema object, 295

Worker object, 176

IDE (Integrated Development Environment), 43

if statements, 20

imageClick() function, 532

images

animation application

animated.component.css, 529

animated.Component.html, 529

animated.component.ts, 527–528

app.component.html, 526–527

app.component.ts, 526

app.module.ts, 525–526

drag-and-drop application

app.component.css, 535–536

app.component.html, 535

app.component.ts, 534–535

drag.component.css, 538

drag.component.html, 538

drag.component.ts, 538

drop.component.css, 537

drop.component.html, 537

drop.component.ts, 536

folder structure, 533–534

image zoom application

app.component.html, 531

app.component.ts, 530–531

folder structure, 530

zoomit.component.css, 532

zoomit.component.html, 532

zoomit.component.ts, 531–532

immediate timers, 62

import keyword, 392

importing

modules, 392

ActivatedRoute, 488

AppRoutingModule, 488

Component, 396–397

HttpModule, 473–474

InMemoryDbService, 476, 481

InMemoryWebApiModule, 480–481

NgModule, 397–398

Router, 488, 492

Observable object, 510–512

imports metadata option (NgModule), 397

$inc operator, 243

IncomingMessage object, 122–123

increment (++) operator, 18

index() method, 295–296

indexed arrays, 384

indexes, 198–199

adding to schemas, 295–296

creating, 327–330

indexes() method, 296

indexOf() method, 30, 31, 33, 34

indexOptionsDefaults option (collections), 215

$indexStats operator, 285

inflate() method, 91

inflateRaw() method, 91

info() function, 53

inheritance, 387

inherits() method, 83, 185–186

initgroups() method, 163

inline CSS and HTML, 405–406

InMemoryDbService, importing, 476, 481

InMemoryWebApiModule

implementing, 540

importing, 480–481

in() method, 303

inner.component.ts listing, 412

$in operator, 263

Input decorator, 412

input.component.ts listing, 413–414

insert() method, 217, 230, 244–246

inspect() method, 184–185

installing

Express, 343

MongoDB, 201–202

Node.js, 42

NPMs (Node Packaged Modules), 46

Integrated Development Environment (IDE), 43

interface keyword, 385

interfaces

Person, 385

PersonInterface, 386

RatedItem, 541

Stringy, 385

TypeScript, 385–386

interpolation, 430–431

interpolation.component.ts listing, 430–431

interrupting loops, 23–24

interval timers, 61–62

intro.ts listing, 406

invalidate() method, 305

I/O

blocking, 57–58

pipes, 159–160

ip property (Request object), 351

isClosed() method, 233

isInit() method, 305

isinstanceof operator, 184

isMaster property (cluster module), 175

isModified() method, 305

isNew property (Document object), 305

isSelected() method, 305

isWorker property (cluster module), 175

iterating through arrays, 34

arrays

adding items to, 34–35

combining, 33–34

converting into strings, 34

iterating through, 34

manipulating, 32–33

methods, 32–33

removing items from, 34–35

searching, 34

conditionals

if statements, 20

switch statements, 20–21

data types, 16–17

error handling, 35

finally keyword, 36–37

throwing errors, 36

try/catch blocks, 35–36

functions, 24. See also individual functions (for example, doCalc() function)

anonymous functions, 25–26

callback functions, 67–70, 348–349

defining, 24

passing variables to, 24–25

returning values from, 25

JSON (JavaScript Object Notation), 73

converting JavaScript objects to, 74

converting to JavaScript objects, 74

keywords

export, 392

finally, 36–37

import, 392

new, 27

styles, 405

styleUrls, 408

templateUrl, 408

var, 15–16

loops, 21

do/while, 22

for, 22–23

for/in, 23

interrupting, 23–24

while, 21

methods, 27. See also individual methods (for example, write() method)

objects, 27

Array, 32–33

converting JSON to, 74

converting to JSON, 74

custom events, 64–65

custom-defined objects, 28

prototyping object patterns, 29

String, 29–31

syntax, 27–28

operators, 17

arithmetic operators, 17–18

assignment operators, 18

comparison operators, 19–20

isinstanceof, 184

statements

break, 23–24

catch, 35–36

continue, 23–24

if, 20

return, 25

switch, 20–21

throw, 36

try, 35–36

strings

combining, 31

converting arrays into, 34

manipulating, 29–31

replacing words in, 31

searching, 31

splitting, 32

string-related methods, 30–31

variables

defining, 15–16

passing to functions, 24–25

scope, 26–27

JavaScript Object Notation. See JSON (JavaScript Object Notation)

join() method, 33, 34

journal option, 242

JSON (JavaScript Object Notation), 73

converting JavaScript objects to, 74

converting to JavaScript objects, 74

file implementation and access, 472–475

app.module.ts, 473–474

dummyDB.JSON, 472

http.component.CSS, 474–475

http.component.html, 474

http.component.ts, 473

responses, sending, 355–357

json pipe, 423

jsonp callback name setting (Express), 344

jsonp replacer setting (Express), 344

jsonp spaces setting (Express), 344

key option

htp.createServer(), 135–136

https.request(), 135–136

tls.connect(), 154

tls.createServer(), 155

(keydown) event, 458

(keypress) event, 458

keys

private keys, generating, 135

shard keys, 336–337

x509 public key, 135, 137

(keyup) event, 458

keywords. See also statements

export, 392

import, 392

new, 27

styles, 405

styleUrls, 408

templateUrl, 408

this, 323

var, 15–16

keywords directive, 48

kill() method, 161, 165, 176

killSignal property (exec() method), 167

lastIndexOf() method, 30, 33

leave() method, 527

length of buffers, determining, 78

less than (<) operator, 19

less than or equal to (<=) operator, 19

limit() method, 301, 318

$limit operator, 284

limit option (options object), 264

limiting result sets, 270

by fields, 271–272

paging results, 273–274

by size, 270–271

listDatabases() method, 229, 233

listdb_connect_url.js, 225

listen() method, 124, 146, 345

listeners, 458

adding to objects, 65

implementing, 65–67

removing from objects, 65

listeners() function, 65

listening event, 145, 174

listing

collections, 214, 237

databases, 211, 233

files, 108–110

MongoDB server status, 236–237

MongoDB user accounts, 206–207

listings

animated.component.css, 529

animated.Component.html, 529

animated.component.ts, 527–528

app.component.css

AreaCalcService, 509

custom directive with component, 454

drag-and-drop application, 535–536

RandomImageService, 513–514

router with navigation bar, 495

star rating application, 544

app.component.html

animation application, 526–527

AreaCalcService, 508–509

custom directive with component, 453–454

drag-and-drop application, 535

image zoom application, 531

PiService, 506

PromiseService, 516

RandomImageService, 513

router with navigation bar, 494

SharedService, 519

star rating application, 543–544

zoom directive, 451–452

app.component.ts

animation application, 526

AreaCalcService, 507–508

custom directive with component, 453

drag-and-drop application, 534–535

image zoom application, 530–531

PiService, 505

PromiseService, 515–516

RandomImageService, 512–513

router with navigation bar, 494

router with parameters, 498

SharedService, 519

simple router application, 490

star rating application, 543

app.module.js, 401

app.module.ts

Angular bootstrapper, 400

animation application, 525–526

simple mock server implementation, 473–474, 480

simple router implementation, 488–489

star rating application, 540

app-routing.module.ts

router with navigation bar, 492–493

router with parameters, 498

simple router implementation, 489–490

area-calc.service.ts, 506–507

attribute.component.css, 448

attribute.component.html, 447

attribute.component.ts, 446–447

badguys.component.css, 522

badguys.component.html, 522

badguys.component.ts, 521

basicExpressions.component.ts, 417

buffer_concat.js, 81

buffer_copy.js, 79

buffer_read.js, 78

buffer_slice.js, 80

buffer_write.js, 77

builtInPipes.component.ts, 425

callback_chain.js, 70

callback_closure.js, 69

callback_parameter.js, 67–68

censortext.js, 49

character.component.css, 462

character.component.html, 462

character.component.ts, 461–462

child_exec.js, 167–168

child_fork.js, 172–173

child_process_exec_file.js, 168–169

child_process_spawn_file.js, 170–171

class.component.ts, 434

classExpressions.component.ts, 418–419

cluster_server.js, 177–179

collection_create_list_delete.js, 238–239

collection_stat.js, 239–240

constructor.component.ts, 407

container.component.css, 455

container.component.html, 455

container.component.ts, 454

createDelete.component.CSS, 479–480

createDelete.component.html, 479

createDelete.component.ts, 477–478

customevent.component.html, 459–460

customevent.component.ts, 459

customPipes.component.ts, 427

custom.pipe.ts, 427

data.service.ts, 476, 481–482

db_connect_object.js, 226

db_create_list_delete.js, 234–236

db_status.js, 236–237

details.component.css, 463

details.component.html, 463

details.component.ts, 462–463

dns_lookup.js, 187–188

doc_aggregate.js, 288

doc_count.js, 268–269

doc_delete_one.js, 257–258

doc_delete.js, 255–256

doc_distinct.js, 277

doc_fields.js, 271–272

doc_find.js, 247–248

doc_group.js, 279–280

doc_insert.js, 245–246

doc_limit.js, 270–271

doc_modify.js, 251

doc_paging.js, 273–274

doc_query.js, 266–268

doc_save.js, 252–253

doc_sort.js, 275–276

doc_update.js, 249–250

doc_upsert.js, 253–254

drag.component.css, 538

drag.component.html, 538

drag.component.ts, 538

drop.component.css, 537

drop.component.html, 537

drop.component.ts, 536

dummyDB.JSON, 472

emitter_listener.js, 66–67

encrypt_password.js, 189

event.component.ts, 436–438

express_auth_one.js, 376

express_auth_session.js, 378–379

express_auth.js, 376

express_cookies.js, 373–374

express_http_https.js, 345

express_json.js, 356

express_middleware.js, 381

express_post.js, 372

express_redirect.js, 359

express_request.js, 351

express_routes.js, 349–350

express_send_file.js, 358

express_send.js, 354

express_session.js, 374–375

express_static.js, 370

express_templates.js, 363–364

external.component.ts, 409

external.css, 409

externalTemplate.html, 409

file_read_async.js, 105

file_read_stream.js, 106

file_read_sync.js, 103–104

file_readdir.js, 109–110

file_read.js, 102–103

file_stats.js, 108

file_write_async.js, 100–101

file_write_stream.js, 101

file_write_sync.js, 99

file_write.js, 98

first.component.js, 402

first.component.ts, 400

first.html, 399

good-guys.component.css, 521

good-guys.component.html, 520

good-guys.component.ts, 520

home.component.html, 490

home.component.ts, 490

http_client_get.js, 128

http_client_post.js, 131

http_client_static.js, 126–127

http_server_external, 132–133

http_server_get.js, 128

http_server_post.js, 130

http_server_static.js, 126

http.component.CSS, 474–475

http.component.html, 474

http.component.ts, 473

inner.component.ts, 412

input.component.ts, 413–414

interpolation.component.ts, 430–431

intro.ts, 406

main_pug.pug, 362–363

mockbackend.service.ts, 540–541

mongoose_aggregate.js, 319

mongoose_connect.js, 293

mongoose_create.js, 308–309

mongoose_find.js, 306–307

mongoose_middleware.js, 323–324

mongoose_remove_many.js, 316

mongoose_remove_one.js, 315

mongoose_save.js, 310

mongoose_update_many.js, 313–314

mongoose_update_one.js, 312

mongoose_validation.js, 321

nav.component.CSS, 494

nav.component.html, 493

nav.component.ts, 493

nexttick.js, 63–64

observable.component.html, 467

observable.component.ts, 466–467

os_info.js, 182–183

outer.component.ts, 411

outer.css, 411

outer.html, 411

package.json, 50, 51

page1.component.html, 499

page1.component.ts

router with navigation bar, 495

router with parameters, 499

page2.component.html

router with navigation bar, 496

router with parameters, 500

page2.component.ts

router with navigation bar, 495

router with parameters, 500

page3.component.html, 496

page3.component.ts, 496

person.component.ts, 413

pi.service.ts, 505

process_info.js, 163–164

promise.service.ts, 515

property.component.ts, 432

random-image.service.ts, 511–512

rated-item.component.css, 545–546

rated-item.component.html, 545

rated-item.component.ts, 544–545

ratings.service.ts, 541–542

readwords.js, 52

route2.component.html, 491

route2.component.ts, 491

shared.service.ts, 517–518

simple_interval.js, 61–62

simple_timer.js, 60–61

socket_client.js, 148–149

socket_server.js, 151–152

./static/css/static.css, 370

stream_duplex.js, 87

stream_piped.js, 90

stream_read.js, 83–84

stream_transform.js, 88–89

stream_write.js, 85

structural.component.ts, 443–444

style.component.ts, 435

twoWay.component.ts, 439–440

typescriptExpressions.component.ts, 421

update.component.CSS, 485–486

update.component.html, 484–485

update.component.ts, 482–483

user_ejs.html, 362

user.service.ts, 478–479, 483–484

util_inherit.js, 185–186

word_schema.js, 297

zlib_buffers.js, 91–92

zlib_file.js, 93

zoom.component.ts, 450–452

zoom.directive.ts, 450–451

zoomit.component.css, 532

zoomit.component.html, 532

zoomit.component.ts, 531–532

little endian, 75

load() method, 205, 206

loadavg() method, 182

loadChildren property (route object), 487

local template variables, adding, 361

localAddress property

ClientRequest object, 119

Socket object, 143

localPort property (Socket object), 144

location() method, 353

log() function, 53

logCar() function, 67–70

logColorCar() function, 67

logger middleware, 367

logout() method, 228, 229

--logpath parameter (mongod command), 203

lookup() method, 186

$lookup operator, 285

loops, 21

do/while, 22

for, 22–23

for/in, 23

interrupting, 23–24

while, 21

lowercase pipe, 423

lt() method, 303

$lt operator, 263

$lte operator, 263

main_pug.pug listing, 362–363

manipulating

arrays, 32–33

strings, 29–31

map() method, 471

MapReduce, 282. See also aggregating results

markModified() method, 305

match() method, 30, 318

$match operator, 283, 284

$max operator, 286

max option (collections), 214

maxBuffer property (exec() method), 167

--maxConns parameter (mongod command), 203

maxScan option (options object), 265

maxTickDepth() method, 162

media files, 9

memoryUsage() method, 162

message event, 165, 176

method property

ClientRequest object, 119

IncomingMessage object, 123

Request object, 351

methods. See also individual methods (for example, write() method)

adding to schemas, 295–296

definition of, 27

methods property (Schema object), 296

middleware (Express), 367–368

assigning globally to path, 368

assigning to single route, 368

basicAuth, 368, 375–377

bodyParser, 368, 371–372

compress, 368

cookieParser, 368, 373–374

cookieSession, 368, 374–375

csrf, 368

custom, 380–381

favicon, 367

functions, 369

logger, 367

Mongoose middleware functions, 322–324

query, 368, 369

session, 368, 377–380

static, 367, 369–371

middleware functions (Mongoose), 322–324

$min operator, 286

mkdir() method, 111

mkdirSync() method, 111

mock back-end service, 540–541

mock web servers

simple JSON file implementation, 472–475

app.module.ts, 473–474

dummyDB.JSON, 472

http.component.CSS, 474–475

http.component.html, 474

http.component.ts, 473

simple mock server implementation, 475–481

app.module.ts, 480

createDelete.component.CSS, 479–480

createDelete.component.html, 479

createDelete.component.ts, 477–478

creating, 475

data.service.ts, 476

user.service.ts, 478–479

simple mock server updates, 481–486

data.service.ts, 481–482

update.component.CSS, 485–486

update.component.html, 484–485

update.component.ts, 482–483

user.service.ts, 483–484

mockbackend.service.ts listing, 540–541

mod() method, 303

$mod operator, 263, 287

model() method, 298

Model object, 292, 298

models, compiling, 298

modifiedFields() method, 310

modifiedPaths() method, 305

modules (Angular), 392

importing

AppRoutingModule, 488

BrowserAnimationsModule, 526

Component, 396–397

HttpModule, 473–474

InMemoryDbService, 476, 481

InMemoryWebApiModule, 480–481

NgModule, 397–398

Router, 492

routing module, 488

TypeScript, 387–388

modules (Node.js)

assertion testing, 190

buffer. See buffers

C/C++ add-ons, 190

child_process, 159–160

child forks, 171–173

ChildProcess object, 164–166

executable files, executing on another process, 168–169

processes, spawning, 169–171

system command, executing on another process, 166–168

cluster, 174

events, 174

HTTP clusters, 176–179

methods, 175

properties, 175

Worker object, 175–176

console, 53–54

creating, 49–50

crypto, 188–190

definition of, 43

dns, 186–188

events. See events

express. See Express

fs. See file system

global, 190

http. See HTTP (Hypertext Transfer Protocol)

https, 134–135

certificate signing request files, 135

HTTPS clients, 135–136

HTTPS servers, 137

private keys, 135

installing, 46

loading into Node.js applications, 52–53

mongodb. See MongoDB Node.js driver

mongoose. See Mongoose

net, 41. See also socket services

Server object, 144–147

Socket objects, 140–144

Node Package Manager, 44–45

Node Package Registry, 43–44

publishing modules to, 50–51

viewing, 43–44

os, 181–183

overview of, 40–41

package.json file, 47–48

process, 159

process execution, 161

process I/O pipes, 159–160

process signals, 160

returning information from, 161–164

publishing to NPM Registry, 50–51

REPL (Read Event Print Loop), 190

searching for, 45

stream. See streams

tls, 139–140, 152–153

TLS socket clients, 153–154

TLS socket servers, 154–156

util, 183–186

format() method, 183–184

inherits() method, 185–186

inspect() method, 184–185

isinstanceof operator, 184

V8, 190

Zlib, 91

compressing/decompressing buffers, 91–92

compressing/decompressing streams, 92–93

modules module, 41

modulus (%) operator, 18

MongoClient object, 222, 223–226

mongod command, 202–203

MongoDB, 192. See also MongoDB Node.js driver; Node.js-to-Angular stack

access control, 209

authentication, 210–211

Database Administrator accounts, 211

User Administrator accounts, 209–210

access from shell client, 203–204

command parameters, 205

shell commands, 204

shell methods, 205

shell scripts, 205–206

advantages of, 3, 12–13

atomic write operations, 198

backing up, 341–342

collections

accessing statistics for, 239–240

adding documents to, 217, 244–246, 307–309

atomically modifying documents in, 250–251

capped collections, 197–198, 330

collection_create_list_delete.js application example, 238–239

creating, 214–215, 237

definition of, 192

deleting, 215–216, 238

deleting documents in, 217–218, 255–256

displaying list of, 214

enabling sharding on, 340

finding documents in, 216, 305–307

getting documents from, 246–248

listing, 237

number of, 199

removing documents from, 314–317

removing single document from, 257–258

saving documents in, 252–253, 310–311

updating documents in, 218–219, 248–250, 309–310

upserting documents in, 253–254

connecting to

MongoClient object, 222, 223–226

Mongoose, 292–294

write concern, 222

data life cycles, 199

data model, planning, 194–195

data types, 193–194

data usability and performance, 200

databases

changing current, 211–212

connecting to using Mongoose, 292–294

copying, 213

creating, 212, 234

database change options, 241–242

db_create_list_delete.js sample application, 234–236

deleting, 212–213, 234

displaying list of, 211

listing, 233

repairing, 341

update operators, 242–244

definition of, 3, 12

distinct field values, finding, 276–277

documents

adding, 217, 244–246, 307–309

aggregating with Mongoose, 317–320

atomically modifying, 250–251

counting, 268–269

data denormalization, 196–197

data normalization, 195–196

embedded documents, 196–197

finding, 216, 265–268, 305–307

getting from collections, 246–248

growth of, 198

paths, 294

references, 195–196

removing, 217–218, 255–256, 257–258, 314–317

saving, 252–253, 310–311

structure of, 192–193

TTY (time-to-live), 199

updating, 218–219, 248–250, 309–314

upserting, 253–254

downloading, 202

indexing, 198–199, 327–330

installing, 201–202

MapReduce, 282

middleware functions, 322–324

Mongoose, 291–292

adding documents with, 307–309

aggregating documents with, 317–320

Document object, 304–305

finding documents with, 305–307

middleware functions, 322–324

models, compiling, 298

objects, 292

Query object, 298–305

removing multiple documents with, 315–317

removing single documents with, 314–315

schemas, 294–298

updating multiple documents with, 313–314

updating single documents with, 311–313

validation framework, 320–322

objects

Admin, 229

Collection, 229–232

Cursor, 232–233

Db, 227–228

MongoClient, 222, 223–226

options, 264–265

query, 262–264

replication, 199

applying, 330–332

replica sets, 333–334

strategy, 332–333

result sets, 270

aggregating, 282–289

grouping results, 277–282

limiting by size, 270–271

limiting fields returned in, 271–272

paging results, 273–274

sorting, 275–276

server status, displaying, 236–237

sharding, 199

definition of, 334

enabling on collections, 340

enabling on databases, 339–340

hash-based sharding, 337

partitioning methods, 337

range-based sharding, 337

shard keys, 336–337

shard tag ranges, 340–341

sharded MongoDB clusters, 338–339

sharding server types, 335

starting, 202–203

stopping, 203

user accounts

creating, 206–207

listing, 206–207

removing, 209

roles, 208

mongodb module. See MongoDB Node.js driver

MongoDB Node.js driver. See also Mongoose

adding to project, 221

collections

accessing statistics for, 239–240

collection_create_list_delete.js application example, 238–239

creating, 237

deleting, 238

listing, 237

database change options, 241–242

database update operators, 242–244

databases

creating, 234

db_create_list_delete.js sample application, 234–236

deleting, 234

listing, 233

distinct field values, finding, 276–277

documents

adding to collections, 244–246

atomically modifying, 250–251

counting, 268–269

deleting, 255–258

finding specific sets of, 265–268

getting from collections, 246–248

saving in collections, 252–253

updating in collections, 248–250

upserting, 253–254

objects

Admin, 229

Collection, 229–232

Cursor, 232–233

Db, 227–228

query objects, 262–265

result sets, 270

aggregating, 282–289

grouping results, 277–282

limiting by size, 270–271

limiting fields returned in, 271–272

paging results, 273–274

sorting, 275–276

mongod.exe, 202

mongodump command, 342

Mongoose, 291–292

connecting to MongoDB with, 292–294

Document object, 304–305

documents

adding, 307–309

aggregating, 317–320

finding, 305–307

removing multiple, 315–317

removing single, 314–315

saving, 310–311

updating multiple, 313–314

updating single, 311–313

models, compiling, 298

objects, 292

Query object, 298–299

operators, 302–304

query database operation, 299–302

schemas

defining, 294–295

implementing on database, 295–296

indexes, 295–296

methods, 295–296

paths, 294

required fields, forcing, 296

unique fields, 296

value types, 294–298

validation framework, 320–322

mongoose_aggregate.js listing, 319

mongoose_connect.js listing, 293

mongoose_create.js listing, 308–309

mongoose_find.js listing, 306–307

mongoose_middleware.js listing, 323–324

mongoose_remove_many.js listing, 316

mongoose_remove_one.js listing, 315

mongoose_save.js listing, 310

mongoose_update_many.js listing, 313–314

mongoose_update_one.js listing, 312

mongoose_validation.js listing, 321

(mouseover) event, 458

multi option, 242

multikey indexes, 328

multiple documents

removing with Mongoose, 315–317

updating with Mongoose, 313–314

multiplication (*) operator, 18

$multiply operator, 287

myCustomEvent, 459

name directive, 47

naming conventions, 193, 404

nav.component.CSS listing, 494

nav.component.html listing, 493

nav.component.ts listing, 493

navigating routes, 488

navigation bar, router with, 492–497

app.component.CSS, 495

app.component.html, 494

app.component.ts, 494

app-routing.module.ts, 492–493

nav.component.CSS, 494

nav.component.html, 493

nav.component.ts, 493

page1.component.ts, 495

page2.component.html, 496

page2.component.ts, 495

page3.component.html, 496

page3.component.ts, 496

ne() method, 303

$ne operator, 263

nested components

building with dependency injection, 410–412

custom events in, 458–460

net module, 41. See also socket services

Server object, 144–147

Socket objects

creating, 140–141

data flow across, 144

events, 141–142

methods, 142–143

properties, 143–144

networkInterfaces() method, 182

new keyword, 27

new line escape code, 29

new option, 242

newSession event, 156

nextObject() method, 232

nextTick() function, 63–64, 161

nexttick.js listing, 63–64

ng eject command, 395

ng generate component command, 395

ng generate directive command, 395

ng generate enum command, 395

ng generate guard command, 395

ng generate interface command, 395

ng generate module command, 395

ng generate pipe command, 395

ng generate service command, 395

ng new command, 395

ng serve command, 395

ng-content directive, 452

ngFor directive, 442, 474, 479, 484, 513

ngForm directive, 445

ngIf directive, 442–443

ngModel directive, 445

NgModule, 397–398, 410

ngOnInit() method, 465, 482, 505, 531, 543

ngStyle directive, 445

ngSwitch directive, 442–443

ngSwitchCase directive, 442, 443

ngSwitchDefault directive, 442

nin() method, 303

$nin operator, 263

node file, 42

Node Package Manager. See NPM (Node Package Manager)

Node Package Registry

publishing modules to, 50–51

viewing, 43–44

Node Packaged Modules. See NPMs (Node Packaged Modules)

node_modules directory, 221

node_modules folder, 42

Node.js. See also modules (Node.js); MongoDB Node.js driver

advantages of, 2–3, 11–12

buffers, 74–75

compressing/decompressing, 91–92

concatenating, 81

copying, 79–80

creating, 75–76

determining length of, 78

encoding methods, 75

reading from, 77–78

slicing, 80

writing to, 76–77

child processes, 164

child forks, 171–173

ChildProcess object, 164–166

executable files, executing on another process, 168–169

processes, spawning, 169–171

system command, executing on another process, 166–168

companies using, 40

connecting to MongoDB from

MongoClient object, 223–226

write concern, 222

definition of, 2, 11, 39

development of, 39

directories

creating, 111–112

deleting, 111–112

renaming, 112

events, 55–56

blocking I/O, 57–58

callbacks, 67–70

conversation metaphor, 57–59

custom events, 64–65

event callbacks, 55–56

event listeners, 65–67

event queue, scheduling work on, 59–60

threaded models, 55–56

executables, verifying, 42–43

files

asynchronous file system calls, 95

deleting, 110

listing, 108–110

opening/closing, 96–97

reading, 102–106

renaming, 112

returning statistics about, 107–108

synchronous file system calls, 95

truncating, 110–111

verifying path of, 106–107

watching for file changes, 112–113

writing, 97–102

HTTP services, 115

ClientRequest object, 118–121

dynamic GET servers, 127–129

external sources, interacting with, 132–134

IncomingMessage object, 122–123

POST servers, 130–131

query string and form parameter processing, 117–118

Server object, 123–125

ServerResponse object, 121–122

static files, serving, 125–127

URLs (Uniform Resource Locators), 115–117

HTTPS services, 134–135

certificate signing request files, 135

HTTPS clients, 135–136

HTTPS servers, 137

private keys, 135

IDE (Integrated Development Environment), 43

install location, 42

installing, 42

JSON (JavaScript Object Notation), 73

converting JavaScript objects to, 74

converting to JavaScript objects, 74

manipulating documents from. See documents (MongoDB)

MongoClient object, 222

nextTick() function, 63–64

objects

checking type of, 184

converting to strings, 184–185

EventEmitter, 64–65

Stats, 107

process clusters, 174

events, 174

HTTP clusters, 176–179

methods, 175

properties, 175

Worker object, 175–176

processes, 159

executable files, executing on another process, 168–169

process execution, 161

process I/O pipes, 159–160

process signals, 160

returning information about, 161–164

spawning, 169–171

system command, executing on another process, 166–168

socket services, 139–140

net.Server object, 144–147

net.Socket object, 140–144

TCP socket clients, 147–150

TCP socket servers, 150–152

TLS socket clients, 153–154

TLS socket servers, 154–156

TLS/SSL, 152–153

streams, 81

compressing/decompressing, 92–93

Duplex streams, 86–88

piping, 89–90

Readable streams, 82–84, 89–90

Transform streams, 88–89

Writable streams, 84–86, 89–90

strings

converting objects to, 184–185

formatting, 183–184

timers, 60

dereferencing, 63

immediate timers, 62

interval timers, 61–62

timeout timers, 60–61

use cases for, 40

Zlib, 91

compressing/decompressing buffers, 91–92

compressing/decompressing streams, 92–93

Node.js modules. See modules (Node.js)

Node.js-to-Angular stack, 7

components of, 11–14

web development framework

backend services, 10

browsers, 8–10

diagram of, 7–8

users, 8

webservers, 10

nodelay option (server object), 224

--nohttpinterface parameter (mongod command), 203

--nojournal parameter (mongod command), 203

--noprealloc parameter (mongod command), 203

nor() method, 303

$nor operator, 263

normalizing data, 195–196

NoSQL, 191–192. See also MongoDB

not (!) operator, 19

not equal (!=) operator, 19

$not operator, 263

NPM (Node Package Manager), 44–45

npm command, 42, 44–45

npm adduser, 50

npm install, 46, 51

npm pack, 50

npm search, 45

npm install command, 475

NPMs (Node Packaged Modules). See modules (Node.js)

NPNProtocols option (tls.createServer), 155

null data type

JavaScript, 17

TypeScript, 384

number data type

JavaScript, 16

TypeScript, 383

number of MongoDB collections, 199

number pipe, 423

numberOfRetries option (options object), 265

object literals, 17

objects, 27

Admin, 229

Array, 32–33

adding items to, 34–35

combining, 33–34

converting into strings, 34

iterating through, 34

manipulating, 32–33

methods, 32–33

removing items from, 34–35

searching, 34

checking type of, 184

ChildProcess object, 164–166

ClientRequest, 118–121

Collection. See collections (MongoDB)

Connection, 292–293

converting JSON to, 74

converting to JSON, 74

converting to strings, 184–185

Cursor, 232–233

custom events, 64–65

custom-defined objects, 28

Db, 227–228

Document, 292, 304–305

event listeners

adding, 65

implementing, 65–67

removing, 65

EventEmitter, 64–65

IncomingMessage, 122–123

inheriting from, 185–186

Model, 292, 298

MongoClient, 222, 223–226

Observable

creating, 464–465

detecting data changes with, 465–468

importing, 510–512

options, 264–265, 275–276

properties, 27

prototyping object patterns, 29

Query, 262–264, 298–299

operators, 302–304

query database operation, 299–302

Request, 350–352

Response, 352

download responses, 359

files in, 356–358

headers, 352–353

JSON responses, 355–357

redirection, 359

rendered templates in, 363–364

sending, 353–355

status, 353

route, 487

Schema, 292, 294–295

Server, 123–125, 144–147

ServerResponse, 121–122

Socket

creating, 140–141

data flow across, 144

events, 141–142

methods, 142–143

properties, 143–144

Stats, 107

String, 29–31

combining, 31

converting arrays into, 34

escape codes, 29–30

manipulating, 29–31

methods, 30–31

replacing words in, 31

searching, 31

splitting, 32

syntax, 27–28

URL, 116–117

Worker, 175–176

Observable object

creating, 464–465

detecting data changes with, 465–468

importing, 510–512

observable.component.html listing, 467

observable.component.ts listing, 466–467

observables

definition of, 464

Observable object

creating, 464–465

detecting data changes with, 465–468

importing, 510–512

ODM (Object Document Model). See Mongoose

once() function, 65

onDrop() method, 536

on() function, 65, 126, 160

online event, 174

open() method, 56, 96–97, 227

opening files, 96–97

openSync() method, 96–97

operators

JavaScript, 17

arithmetic operators, 17–18

assignment operators, 18

comparison operators, 19–20

isinstanceof, 184

MongoDB

$add, 286

$addFields, 285

$addToSet, 243, 286

$all, 264

$and, 263

$avg, 286

$bit, 244

$bucket, 285

$bucketAuto, 285

$collStatus, 284

$concat, 287

$count, 285

$divide, 286

$each, 244

$elemMatch, 264, 266

$eq, 263

$exists, 263

$facet, 285

$first, 286

$geoNear, 285

$graphLookup, 285

$group, 284

$gt, 263

$gte, 263

$inc, 243, 263

$indexStats, 285

$last, 286

$limit, 284

$lookup, 285

$lt, 263

$lte, 263

$match, 283, 284

$max, 286

$min, 286

$mod, 263, 287

$multiply, 287

$ne, 263

$nin, 263

$nor, 263

$not, 263

$or, 263

$out, 285

$pop, 243

$project, 284

$pull, 244

$pullAll, 243

$push, 244, 286

$redact, 284

$regex, 264

$rename, 243

$replaceRoot, 285

$sample, 285

$set, 243

$setOnInsert, 243

$size, 264

$skip, 284

$slice, 244

$sort, 244, 284

$sortByCount, 285

$strcasecmp, 287

$substr, 287

$subtract, 287

$sum, 286

$toLower, 287

$toUpper, 287

$type, 263

$unset, 243

$unwind, 284

options object, 264–265, 275–276

or() method, 303

or (||) operator, 19

$or operator, 263

originalUrl property (Request object), 351

os module, 41, 181–183

os_info.js listing, 182–183

$out operator, 285

outer.component.ts listing, 411

outer.css listing, 411

outer.html listing, 411

outlet property (route object), 487

packages. See modules (Node.js)

page1.component.html listing, 499

page1.component.ts listing

router with navigation bar, 495

router with parameters, 499

page2.component.html listing

router with navigation bar, 496

router with parameters, 500

page2.component.ts listing

router with navigation bar, 495

router with parameters, 500

page3.component.html listing, 496

page3.component.ts listing, 496

paging results, 273–274

param() method, 349

parameters

MongoDB shell commands, 205

passing to callback functions, 67–68

route parameters, applying, 347

callback functions, 348–349

with defined parameters, 348

express_routes.js example, 349–350

with query strings, 347–348

with regex, 348

router with parameters, 497–501

app.component.ts, 498

app-routing.module.ts, 498

page1.component.html, 499

page1.component.ts, 499

page2.component.html, 500

page2.component.ts, 500

parent components, deleting data in, 461–464

parentheses ( ), 20, 24, 436, 457

parse() method, 74, 116, 117–118, 347

parseWeather() function, 132

parsing query strings, 117–118

partial option (options object), 265

partitioning methods, 337

passing data

with dependency injection, 412–413

parameters to functions, 67–68

variables to functions, 24–25

passphrase option

htp.createServer(), 136

https.request(), 136

tls.connect(), 154

tls.createServer(), 155

patch() method, 470

path module, 41

path property

ClientRequest object, 119

Request object, 351

route object, 487

URL object, 117

pathname property (URL object), 117

paths

assigning Express middleware to, 368

document paths, 294

verifying, 106–107

pause() method, 82, 142

pauseOnConnect option, 145

performance, MongoDB, 200

periodic work, scheduling

with immediate timers, 62

with interval timers, 61–62

Person interface, 385

person.component.ts listing, 413

PersonInterface, 386

pfx option

htp.createServer(), 136

https.request(), 136

tls.connect(), 154

tls.createServer(), 155

pid method, 162

pid property (ChildProcess object), 166

ping() method, 229

pipe class, 426

@pipe decorator, 426

pipe event, 84

pipe() method, 83, 89–90

pipe symbol (|), 426

pipes

built-in pipes

builtInPipes.component.ts, 425

table of, 422–424

custom pipes, 426–428

definition of, 422

piping Readable streams to Writable streams, 89–90

process I/O pipes, 159–160

PiService, 505–506

app.component.html, 506

app.component.ts, 505

pi.service.ts, 505

pi.service.ts listing, 505

platform() method, 162, 182

playLoop() function, 465

poolSize option (server object), 224

pop() method, 33

$pop operator, 243

--port parameter (mongod command), 202

port property

ClientRequest object, 119

URL object, 116

post() method, 470

post middleware functions, 322–324

POST requests

body data, handling, 371–372

definition of, 9

POST servers, 130–131

pre middleware functions, 322–324

preferGlobal directive, 47

preventDefault() method, 536

primary servers, 330

private keys, 135

process module, 41, 159

process execution, 161

process I/O pipes, 159–160

process signals, 160

returning information from, 161–164

process property (Worker object), 176

process signals, 160

process_info.js listing, 163–164

processes, 159

child processes, 159–160

ChildProcess object, 164–166

executable files, executing on another process, 168–169

processes, spawning, 169–173

system command, executing on another process, 166–168

process clusters, 174

events, 174

HTTP clusters, 176–179

methods, 175

properties, 175

Worker object, 175–176

process execution, 161

process I/O pipes, 159–160

process signals, 160

returning information about, 161–164

profile command, 204

project() method, 318

$project operator, 284

PromiseService, 515–516

promise.service.ts listing, 515

properties

binding, 431–433

ClientRequest object, 119

cluster module, 175

definition of, 27

Document object, 304–305

IncomingMessage object, 123

net.Socket object, 143–144

Request object, 351

URL object, 116–117

Worker object, 176

property binding, 431–433

property.component.ts listing, 432

protocol property

Request object, 351

URL object, 116

prototyping object patterns, 29

providers metadata option (NgModule), 397

publishing modules, 50–51

$pull operator, 244

$pullAll operator, 243

push() method, 33

$push operator, 244, 286

put() method, 470

PUT requests

response callback functions, 471

sending, 470–471

MongoDB query object, 262–264

Mongoose Query object, 298–299

operators, 302–304

query database operation, 299–302

options objects, 264–265

query strings, 41

applying route parameters with, 347–348

processing, 117–118

result sets, 270

aggregating, 282–289

grouping results, 277–282

limiting by size, 270–271

limiting fields returned in, 271–272

paging results, 273–274

sorting, 275–276

query middleware, 368, 369

query object (MongoDB), 262–264

Query object (Mongoose), 298–299

operators, 302–304

query database operation

options, 301–302

setting, 299–302

query property

Request object, 351

URL object, 117

query router servers, 335, 338–339

query strings, 41

applying route parameters with, 347–348

processing, 117–118

queryRemover() function, 380

--quiet parameter (mongod command), 202

RandomImageService, 510–514

app.component.css, 513–514

app.component.html, 513

app.component.ts, 512–513

random-image.service.ts, 511–512

random-image.service.ts listing, 511–512

range-based sharding, 337

rated-item component, 543–544

rated-item.component.css, 545–546

rated-item.component.html, 545

rated-item.component.ts, 544–545

RatedItem interface, 541

ratings.service.ts listing, 541–542

Read Event Print Loop (REPL) module, 41, 190

read() method, 82, 104–105, 302, 318

read option (Schema object), 295

read role (MongoDB), 208

readable event, 82

Readable streams, 82–84, 89–90

readAnyDatabase role (MongoDB), 208

readConcern option (server object), 224

readdir() method, 109

readdirSync() method, 109

readFile() method, 102–103

reading files

asynchronous file reading, 104–105

simple file read, 102–103

streamed file reading, 105–106

synchronous file reading, 103–104

readInt8() method, 77

readInt16BE() method, 77

readInt16LE() method, 77

readline module, 41

readPreference option

options object, 265

server object, 224

readSync() method, 103–104

readwords.js listing, 52

readWrite role (MongoDB), 208

readWriteAnyDatabase role (MongoDB), 208

receiving cookies, 373–374

ReconnectInterval option (server object), 224

reconnectTries option (server object), 224

$redact operator, 284

redirect() method, 359

redirecting responses, 359

redirectTo property (route object), 487

ref() method, 63, 143, 146

references, MongoDB documents, 195–196

regenerate() method, 378

regex, applying route parameters with, 348

regex() method, 303

$regex operator, 264

Registry, Node Package Registry

publishing modules to, 50–51

viewing, 43–44

rejectUnauthorized option

htp.createServer(), 136

https.request(), 136

tls.connect(), 154

tls.createServer(), 155

release() method, 182

remoteAddress property (Socket object), 143

remoteFamily property (Socket object), 143

remotePort property (Socket object), 143

remove() method, 217, 230, 255, 301, 305, 314–316

removeHeader() method, 122

removeListener() function, 65

removeShardTag() method, 341

removeUser() method, 209, 228, 229

removing data. See deleting data

rename() method, 112, 230

$rename operator, 243

renameCollection() method, 228

renameSync() method, 112

renaming files/directories, 112

render() method, 363–364

rendered templates, sending, 363–364

rendering browser view, 9–10

--repair parameter (mongod command), 203

repairDatabase() method, 341

repairing databases, 341

REPL (Read Event Print Loop) module, 41, 190

replace() method, 30, 31

$replaceRoot operator, 285

replacing words in strings, 31

replica sets, deploying, 333–334

replication

applying, 330–332

replica sets, 333–334

strategy, 332–333

replications, 199

repository directive, 48

request event, 124

request() method, 118, 136

Request objects, 350–352

requestCert option (tls.createServer), 155

requests, 9

ClientRequest object, 118–121

configuration, 471

GET requests, 470–471

GetData, 55–56

GetFile, 55–56

POST, 371–372

PUT requests, 470–471

request event, 124

Request objects, 350–352

response callback functions, 471

require() method, 52

required fields, forcing, 296

requiredPaths() method, 296

resolve() method, 117, 186, 515

Resolve property (route object), 487

resolve4() method, 187

resolve6() method, 187

resolveCname() method, 187

resolveMx() method, 187

resolveNs() method, 187

resolveSrv() method, 187

resolveTxt() method, 187

resolving URLs (Uniform Resource Locators), 117

response callback functions (HTTP), 471

response event, 120

Response objects, 352

download responses, 359

headers, 352–353

JSON responses, 355–357

redirection, 359

sending, 353–355

sending files in, 356–358

sending rendered templates in, 363–364

status, 353

responses

IncomingMessage object, 122–123

response event, 120

Response objects, 352

download responses, 359

headers, 352–353

JSON responses, 355–357

redirection, 359

sending, 353–355

sending files in, 356–358

sending rendered templates in, 363–364

status, 353

ServerResponse object, 121–122

responsibilities, separation of, 393

result sets, 270

aggregating, 282–289

aggregate() method, 283

aggregation examples, 287–289

aggregation expression operators, 285–287

aggregation framework operators, 283–285

grouping results, 277–282

limiting by size, 270–271

limiting fields returned in, 271–272

paging results, 273–274

sorting, 275–276

resume() method, 82, 142

resumeSession event, 156

return statement, 25

return values, 25

reusable code, 14, 361

reverse() method, 33, 187

rewind() method, 233

rmdir() method, 111

rmdirSync() method, 111

roles (MongoDB), 208

roles command, 204

root component (custom directive), 453

CSS for, 454

HTML for, 453–454

route object, 487

route2.component.html listing, 491

route2.component.ts listing, 491

Router, importing, 488

Router module, importing, 492

router service, 470

ActivatedRoute, importing, 488

route navigation, 488

route object parameters, 487

Router, importing, 488

router with navigation bar, 492–497

app.component.CSS, 495

app.component.html, 494

app.component.ts, 494

app-routing.module.ts, 492–493

nav.component.CSS, 494

nav.component.html, 493

nav.component.ts, 493

page1.component.ts, 495

page2.component.html, 496

page2.component.ts, 495

page3.component.html, 496

page3.component.ts, 496

router with parameters, 497–501

app.component.ts, 498

app-routing.module.ts, 498

page1.component.html, 499

page1.component.ts, 499

page2.component.html, 500

page2.component.ts, 500

Routes array, defining, 486–487

routing module, including, 488

simple router implementation, 488–491

app.component.ts, 490

app.module.ts, 488–489

app-routing.module.ts, 489–490

home.component.html, 490

home.component.ts, 490

route2.component.html, 491

route2.component.ts, 491

router-outlet tag, 488

routes

applying parameters in, 347

callback functions, 348–349

with defined parameters, 348

express_routes.js example, 349–350

with query strings, 347–348

with regex, 348

assigning Express middleware to, 368

definition of, 345

implementing, 346

Routes array, defining, 486–487

routing module, including, 488

runGaurdsAndResolvers property (route object), 487

safe option (Schema object), 295

$sample operator, 285

save() method, 217, 218–219, 230, 252–253, 305, 308, 310, 378

saving documents, 252–253, 310–311

scalability

of MongoDB, 3, 13

of Node.js, 3, 12

scheduling work

nextTick() function, 63–64

timers, 60

dereferencing, 63

immediate timers, 62

interval timers, 61–62

timeout timers, 60–61

Schema object, 292, 294–295

schema property (Document object), 305

schemas

defining, 294–295

implementing on database, 295–296

indexes, adding, 295–296

methods, adding, 295–296

paths, 294

required fields, forcing, 296

Schema object, 292, 294–295

unique fields, 296

value types, 294–298

schemas metadata option (NgModule), 397

scope of variables, 26–27

scripts, 205–206. See also listings

scripts directive, 47

search() method, 30

search property (URL object), 117

searching

arrays, 34

collections, 216

documents, 216, 265–268

field values, 276–277

for NPMs (Node Packaged Modules), 45

strings, 31

secondary servers, 331

SecretAgent class, 387

secure property (Request object), 351

secureConnection event, 156

secureProtocol option

htp.createServer(), 136

https.request(), 136

tls.connect(), 154

tls.createServer(), 155

select() method, 301

selectCharacter() function, 461

selector option (components), 403

selectors, 404

selectUser() method, 482

send() method, 165, 176, 353–355

sendData event, 121

sendfile() method, 356–358

sending

cookies, 373–374

rendered templates, 363–364

requests, 470–471

responses

download responses, 359

JSON responses, 355–357

redirection, 359

send() method, 353–355

separation of responsibilities, 393

serializeFunctions option, 242

Server object, 123–125, 144–147

server status, displaying, 236–237

servername option (tls.connect), 154

ServerResponse object, 121–122

servers. See also mock web servers

arbiter, 331

config servers, 335, 338

Express server, starting, 345

HTTP (Hypertext Transfer Protocol)

dynamic GET servers, 127–129

external sources, interacting with, 132–134

POST servers, 130–131

Server object, 123–125

static files, serving, 125–127

HTTPS, 137

MongoDB server status, displaying, 236–237

primary servers, 330

query router servers, 335, 338–339

secondary servers, 331

shard servers, 335

TCP socket servers, 150–152

TLS socket servers, 154–156

server-side programs, 10

serverStatus() method, 229

services (Angular)

animate, 470

animation service, application using

animated.component.css, 529

animated.component.html, 529

animated.component.ts, 527–528

app.component.html, 526–527

app.component.ts, 526

app.module.ts, 525–526

folder structure, 525

constant data service, 505–506

app.component.html, 506

app.component.ts, 505

pi.service.ts, 505

data transform service, 506–510

app.component.css, 509

app.component.html, 508–509

app.component.ts, 507–508

area-calc.service.ts, 506–507

definition of, 393

forms, 470

http, 470

GET requests, sending, 470–471

JSON file implementation and access, 472–475

PUT requests, sending, 470–471

request configuration, 471

response callback functions, 471

simple mock server implementation, 475–481

simple mock server updates, 481–486

integrating into applications, 503–504

mock back-end service, 540–541

purpose of, 469

ratings service, 541–542

router, 470

ActivatedRoute, importing, 488

route navigation, 488

route object parameters, 487

Router, importing, 488

router with navigation bar, 492–497

router with parameters, 497–501

Routes array, 486–487

routing module, including, 488

simple router implementation, 488–491

service that returns a promise, 515–516

shared service, 516–523

app.component.html, 519

app.component.ts, 519

badguys.component.css, 522

badguys.component.html, 522

badguys.component.ts, 521

good-guys.component.css, 521

good-guys.component.html, 520

good-guys.component.ts, 520

shared.service.ts, 517–518

use cases for, 503–504

UserService, 483–484

variable data service, 510–514

app.component.css, 513–514

app.component.html, 513

app.component.ts, 512–513

random-image.service.ts, 511–512

session middleware, 368, 377–380

sessionIdContext option (tls.createServer), 155

sessions

implementing, 374–375

session authentication, 377–380

session middleware, 368

set() method, 304, 344, 352

$set operator, 243

setEncoding() method, 82, 142

setgid() method, 162

setgroups() method, 163

setHeader() method, 122

setImmediate() function, 62

setInterval() function, 61–62

setKeepAlive() method, 143

setMaxListeners() function, 65

setNoDelay() method, 121, 143

$setOnInsert operator, 243

setOptions() method, 301

setRating() method, 544

sets of documents, finding, 265–268

setSocketKeepAlive() method, 121

setTimeout() function, 60–61, 120, 122, 123, 143, 510

settings property (cluster module), 175

setuid() method, 162

setup event, 174

setupMaster() method, 175

shard keys, 336–337

shard tag ranges, 340–341

sharding, 199

definition of, 334

enabling on collections, 340

enabling on databases, 339–340

hash-based sharding, 337

partitioning methods, 337

range-based sharding, 337

shard keys, 336–337

shard tag ranges, 340–341

sharded MongoDB clusters, 338

adding shards to cluster, 339

config server database instances, 338

query router servers, 338–339

sharding server types, 335

shared service, 516–523

app.component.html, 519

app.component.ts, 519

badguys.component.css, 522

badguys.component.html, 522

badguys.component.ts, 521

good-guys.component.css, 521

good-guys.component.html, 520

good-guys.component.ts, 520

shared.service.ts, 517–518

SharedService. See shared service

shared.service.ts listing, 517–518

shell clients, accessing MongoDB from, 203–204

command parameters, 205

shell commands, 204

shell methods, 205

shell scripts, 205–206

shift() method, 33

show command, 204

SIGBREAK event, 160

SIGHUP event, 160

SIGINT event, 160

SIGKILL event, 160

sign class, 189

signals, process, 160

SIGPIPE event, 160

SIGSTOP event, 160

SIGTERM event, 160

SIGUSR1 event, 160

SIGWINCH event, 160

silent property (fork() function), 172

simple_interval.js listing, 61–62

simple_timer.js listing, 60–61

single documents

removing with Mongoose, 314–315

updating with Mongoose, 311–313

single field indexes, 328

size, limiting results by, 270–271

size() method, 304

$size operator, 264

size option (collections), 214

skip() method, 302, 318

$skip operator, 284

skip option (options object), 264

slice() method, 30, 33, 80

$slice operator, 244

slice:start:end pipe, 423

slicing buffers, 80

snapshot() method, 302

snapshot option (options object), 265

SNICallback option (tls.createServer), 155

socket event, 120

Socket objects

creating, 140–141

data flow across, 144

events, 141–142

methods, 142–143

properties, 143–144

socket property (IncomingMessage object), 123

socket services, 139–140

net.Server object, 144–147

net.Socket object

creating, 140–141

data flow across, 144

events, 141–142

methods, 142–143

properties, 143–144

TCP socket clients, 147–150

TCP socket servers, 150–152

TLS socket clients, 153–154

TLS socket servers, 154–156

socket_client.js listing, 148–149

socket_server.js listing, 151–152

socketPath property (ClientRequest object), 119

socketTimeOut option (server object), 224

soldierOfGondor() function, 388

sort() method, 33, 233, 302, 318

$sort operator, 244, 284

sort option (options object), 264, 275–276

$sortByCount operator, 285

sorting result sets, 275–276

spare property (indexes), 329

spawn() method, 169–171

spawning processes, 169–171

splice() method, 33

split() method, 30, 32

splitting strings, 32

SQL injection, 13

ssl option (server object), 224

stale property (Request object), 351

star rating application

app.component.css, 544

app.component.html, 543–544

app.component.ts, 543

app.module.ts, 540

folder structure, 539

mockbackend.service.ts, 540–541

rated-item.component.css, 545–546

rated-item.component.html, 545

rated-item.component.ts, 544–545

ratings.service.ts, 541–542

starting

Express server, 345

MongoDB, 202–203

query router servers, 338–339

statements. See also keywords

break, 23–24

catch, 35–36

continue, 23–24

finally, 36–37

if, 20

return, 25

switch, 20–21

throw, 36

try, 35–36

static files, serving, 125–127, 369–371

static middleware, 367, 369–371

./static/css/static.css listing, 370

statistics, accessing

collection statistics, 239–240

file statistics, 107–108

stats() method, 107–108, 232

Stats object, 107

statsSync() method, 107

status of Response objects, 353

statusCode event, 121, 123

stderr, 159, 166

stdin, 159, 166

stdio property (spawn() function), 170

stdout, 159, 166

stopping MongoDB, 203

strategy, replication, 332–333

$strcasecmp operator, 287

stream module. See streams

stream_duplex.js listing, 87

stream_piped.js listing, 90

stream_read.js listing, 83–84

stream_transform.js listing, 88–89

stream_write.js listing, 85

streams, 81

compressing/decompressing, 92–93

Duplex streams, 86–88

piping, 89–90

Readable streams, 82–84, 89–90

streamed file reading, 105–106

streamed file writing, 101–102

Transform streams, 88–89

Writable streams, 84–86, 89–90

strict option (Schema object), 295

strict routing setting (Express), 344

string decoder module, 41

String object, 29–31

combining, 31

converting arrays into, 34

escape codes, 29–30

manipulating, 29–31

methods, 30–31

replacing words in, 31

searching, 31

splitting, 32

stringify() method, 74, 118

strings, 16

converting objects to, 184–185

formatting, 183–184

JavaScript

combining, 31

converting arrays into, 34

escape codes, 29–30

manipulating, 29–31

methods, 30–31

replacing words in, 31

searching, 31

splitting, 32

query strings, 41

applying route parameters with, 347–348

processing, 117–118

TypeScript, 383

Stringy interface, 385

structural directives, 392, 442–445

definition of, 441

ngFor, 442

ngIf, 442–443

ngSwitch, 442–443

ngSwitchCase, 442, 443

ngSwitchDefault, 442

structural.component.ts, 443–444

structural.component.ts listing, 443–444

style binding, 435–436

style.component.ts listing, 435

styles keyword, 405

styles option (components), 404

stylesUrls option (components), 404

styleUrls keyword, 408

(submit) event, 457

subscribe() method, 464

substr() method, 31

$substr operator, 287

substrings, searching for, 31

$subtract operator, 287

subtraction (-) operator, 18

suicide property (Worker object), 176

$sum operator, 286

switch statements, 20–21

synchronous file reading, 103–104

synchronous file system calls, 95

synchronous file writing, 98–99

system command, executing on another process, 166–168

tab escape code, 30

tags, router-outlet, 488

TCP (Transmission Control Protocol)

socket clients, 147–150

socket servers, 150–152

template engines, 360

defining, 360–361

locals, adding, 361

rendered templates, sending, 363–364

template creation, 361–363

template option (components), 404

templates

building, 404–405

creating, 361–363

external templates, 408–410

template engines, 360

defining, 360–361

locals, adding, 361

rendered templates, sending, 363–364

template creation, 361–363

templateUrl keyword, 408

templateUrl option (components), 404

text indexes, 328

then() method, 472–473

this keyword, 323

threaded event models, 55–56

throw statement, 36

throwing errors, 36

tilde (~), 404–405

time() function, 53

timeEnd() function, 54

timeout event, 141

timeout property

exec() method, 167

options object, 265

timeout timers, 60–61

timers, 41, 60

dereferencing, 63

immediate timers, 62

interval timers, 61–62

timeout timers, 60–61

time-to-live (TTY) values

documents, 199

indexes, 329

title method, 162

tls module, 41, 139–140, 152–153. See also socket services

TLS socket clients, 153–154

TLS socket servers, 154–156

tmpdir() method, 181

toArray() method, 232

toJSON() method, 305

$toLower operator, 287

toLowerCase() method, 31

toObject() method, 305

toPromise() method, 471, 472–473

toString() method, 33, 77, 305

totalmem() method, 182

touch() method, 378

$toUpper operator, 287

toUpperCase() method, 31

trace() function, 54

trailers property (IncomingMessage object), 123

transform() method, 88

Transform streams, 88–89

Transmission Control Protocol. See TCP (Transmission Control Protocol)

truncate() method, 110–111

truncateSync() method, 110–111

truncating files, 110–111

trust proxy setting (Express), 344

try statement, 35–36

TTY (time-to-live) values

documents, 199

indexes, 329

two-way binding, 439–440

twoWay.component.ts listing, 439–440

type() method, 181, 353

$type operator, 263

types. See data types

TypeScript, 383. See also listings

in Angular expressions, 419–422

classes

defining, 386

inheritance, 387

data types, 383–384

directives, 462–463

functions, 388–389

interfaces, 385–386

modules, 387–388

typescriptExpressions.component.ts listing, 421

uid property (spawn() function), 170

Uniform Resource Locators. See URLs (Uniform Resource Locators)

unique fields, 296

unique property (indexes), 329

unlink() method, 110

unlinkSync() method, 110

unpipe event, 85

unpipe() method, 83, 89–90

unref() method, 63, 143, 146

$unset operator, 243

unshift() method, 33

unwind() method, 318

$unwind operator, 284

update() method, 218–219, 231, 248–250, 301, 304, 311, 313

update operators, 242–244

update.component.CSS listing, 485–486

update.component.html listing, 484–485

update.component.ts listing, 482–483

updateRating() method, 541–542

updateUser() method, 482, 483

updating

documents

findAndRemove() method, 218–219

with Mongoose, 309–314

update() method, 248–250

mock web server items, 481–486

data.service.ts, 481–482

update.component.CSS, 485–486

update.component.html, 484–485

update.component.ts, 482–483

user.service.ts, 483–484

upgrade event, 120, 124

uppercase pipe, 423

upsert option, 242

upserting documents, 253–254

uptime() method, 162, 182

URL object, 116–117

url property (IncomingMessage object), 123

URLs (Uniform Resource Locators), 41

resolving, 117

structure of, 115–116

URL object, 116–117

use command, 204

use() method, 368

user accounts (MongoDB)

creating, 206–207

listing, 206–207

removing, 209

roles, 208

User Administrator accounts, 209–210

user_ejs.html listing, 362

userAdmin role (MongoDB), 208

userAdminAnyDatabase role (MongoDB), 208

users, 8, 10

users command, 204

UserService, 483–484

user.service.ts listing, 478–479, 483–484

utf8 encoding, 75

utf16le encoding, 75

util module, 183

format() method, 183–184

inherits() method, 185–186

inspect() method, 184–185

isinstanceof operator, 184

util_inherit.js listing, 185–186

utilities module, 41

UUID() method, 205

validate() method, 305, 320

validation framework (Mongoose), 320–322

validationAction option (collections), 215

validationLevel option (collections), 215

validator option (collections), 214

valueOf() method, 31, 33

var keyword, 15–16

variable data service, 510–514

app.component.css, 513–514

app.component.html, 513

app.component.ts, 512–513

random-image.service.ts, 511–512

variables

defining, 15–16

local template variables, 361

passing to functions, 24–25

scope, 26–27

--verbose parameter (mongod command), 202

verify class, 189

verifying

file path, 106–107

Node.js executables, 42–43

version directive, 47

version method, 161

--version parameter (mongod command), 202

versions method, 161

view cache setting (Express), 344

view engine setting (Express), 344

viewProviders option (components), 404

views (browser), rendering, 9–10

views setting (Express), 344

Visual Studio Code, 394

VM module, 41

void data type, 384

warn() function, 53

watchFile() method, 112–113

watching for file changes, 112–113

web applications. See components (Angular); services (Angular)

web browsers. See browsers

web development framework

backend services, 10

browsers, 8

browser view, rendering, 9–10

browser-to-webserver communication, 8–9

user interaction, 10

diagram of, 7–8

users, 8

webservers, 10

web servers. See mock web servers

webservers, 10

where() method, 302

while loops, 21

word_schema.js listing, 297

words, replacing in strings, 31

work, scheduling

adding to event queue, 59–60

nextTick() function, 63–64

timers, 60

dereferencing, 63

immediate timers, 62

interval timers, 61–62

timeout timers, 60–61

Worker object, 175–176

worker property (cluster module), 175

workers property (cluster module), 175

Writable streams, 84–86, 89–90

write concern, 222

write() method, 76, 84–85, 118, 120, 122, 128, 142, 151

write operations, 198

writeContinue() method, 122

writeFile() method, 98

writeInt8() method, 76

writeInt16BE() method, 76

writeInt16LE() method, 76

writeSync() method, 98–101

writing

to console, 53–54

files

asynchronous file writing, 99–101

simple file write, 98

streaming file writing, 101–102

synchronous file writing, 98–99

wtimeout option, 241

wTimeOut option (server object), 224

Zlib module, 41, 91

compressing/decompressing buffers, 91–92

compressing/decompressing streams, 92–93

zlib_buffers.js listing, 91–92

zlib_file.js listing, 93

zoom application

app.component.html, 531

app.component.ts, 530–531

folder structure, 530

zoomit.component.css, 532

zoomit.component.html, 532

zoomit.component.ts, 531–532

zoom directive, 449–452

ZoomDirective export class, 451

zoom.directive.ts listing, 450–451

zoomit component

zoomit.component.css, 532

zoomit.component.html, 532

zoomit.component.ts, 531–532