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Examples

Every language feature has a runnable example under examples/ — no README snippets to go stale, just .ts files that compile and run, verified on every build. All 407 of them are here, grouped by area; pick one from the tree on the left.

Arrays 19

Array Bounds Array From Arraylike Array Functions Array Methods Array Reference Semantics Array To String Arrays Arrays In Containers Arrays Of Objects Higher Order Index Append Literal Tables Mutators Everywhere Nested Arrays Reference Aliasing Return Capture Aliasing Sort Spread Rest Undefined Absence

assert 1

Async / Promise 14

Aggregate Error Async Async Generator Async Iterable Async Local Storage Concurrent Tasks For Await Iterables New Promise One Event Loop Promise All Promise Chaining Promise Combinator Shape Promise Rejection Top Level Await

BigInt 1

Blob 1

Buffer 2

child_process 3

Child Process Fork Ipc Streams

Classes 15

Class Factory Class Statics Per Eval Class Values Classes Error Subclass Extends Array Extends Date Extends Map Extends Promise Extends Regexp Foreign Argument Literal Member Names Local Class Closure Self Ref Frozen Field Symbol Keyed Fields

Closures 5

Array Of Closures Closures Default Params Fall Off The End Nested Capture

cluster 3

Cluster Cluster Events Worker Messaging

console 4

Console Format Inspect Long Arrays Inspect Tostringtag

Control flow 2

Control Flow Try Finally

Cross Compile 1

Web Crypto 4

Create Hash Crypto Key Agreement Key Object

Date 1

Decorators 6

Class Decorators Decorator Metadata Decorators Factory Decorators Method Decorators Standard Decorators

dgram 1

dns 2

Lookup Resolve Promises

Dynamic 8

Any Arrays Symbols Any Methods Any Null Undefined Any Parameters Boxed Array Stringify Dynamic Object Proxy Reflect Widen Fresh Object

Encoding / Text 1

Enums 1

EventEmitter 4

Event Map Eventemitter Multi Arg Override

Events 9

Abort Controller Abort Onabort Abort Signal Static Abort Timeout Dispatch Event Customevent Eventtarget Fetch Abort On Once

EventSource 1

fetch 10

Fetch Fetch Init Fetch Request Headers Fetch Request Init Fetch Response Headers Fetch Then Headers Lazy Body Wttr Weather Xhr

Ffi 1

Finalization 1

Finalization Registry

File system 6

Fs Fs Async Pool Fs Eisdir Fs Link Types Read Stream Backpressure Statfs Umask Fchmod

fs (async) 1

Fs Promises Pool 1

Fs Promises Pool

fs (streams) 1

Fs Watch 1

Function expressions 7

Bind Rest Call Apply Forward Reference Function Expressions Named Optional Any Param Own Properties

Generators 5

Generator Array Yield Generator Expressions Generator Sent Value Generators Iterator Helpers

Generics 5

Erased Generics Generic Arrows Generic Promise Generics Multi Type Params

Globals 4

Globals Namespace Values Shadowed Globals Static Eval

Concurrency (klain:sync) 3

Parallel Primes Pipeline Select

HTTP/2 6

Client Session Constants Settings H2c Server Module Server Streams Server Secure Server

Https 1

util.inspect 2

Line Layout Object Print

Interfaces 3

Extends Merge Interfaces Recursive Types

JSDoc 3

Pure Typed Javascript Widths

JSON 6

Json Json Dynamic Json Methods Json Null Strings Json Obj Replacer Reviver

Language 6

Namespaces V2 Object Type Signatures Overload Signatures Parameter Properties Spread Args Destructuring Assignment

Literal expressions 1

Literal Expressions

Map 3

Any Keys Iterators Map

Math 1

Memory management 6

Memory Auto Memory Deep Free Memory Free Memory Gc Memory Optimize Memory Value Arrays

Nested functions 1

Nested Functions

net 4

Client Server Connect Error Echo Server Is Ip

Nullable scalars 1

Nullable Scalars

Nullish 2

Evolving Any Nullish

Objects 9

Any Fields Array Field Aliasing Computed Keys Getters Setters Group By Object Static Objects Optional Fields Symbol Keys

os 2

path 2

Path Path Win32

Perf 1

Process / CLI 8

Diagnostics Channel Env Argv Undefined Events Graceful Shutdown Process Process Info Spawn Sync Spawn Sync Options

Process stdin 1

querystring 1

readline 2

RegExp 5

Regexp Regexp Dialects Regexp Ecmascript Regexp Replace Callback Regexp Utf16

Set 1

Sqlite 1

Streams 13

Class Extends Default String Chunks Fetch Body Gzip Http Chunked Http Upload Named Exports Node Stream Pipeline Qualified New Read Done Value Readable Stream Web

Strings 13

Char Code Escape Sequences Replace Callback Replace Capture Groups Search Compare String Concat String Indexing String Methods String Static Strings Substring Slice Template Literals Unicode Case

Structured Clone 1

Structured Clone

Tagged Templates 1

Tagged Templates

Testing 2

Testing Unit Tests

Timers 4

Module Promises Timers Zero Delay Clamp

tls 2

Tls Client Tls Server

Try Catch 3

Division By Zero Error Cause Try Catch

Tty 1

Tuples 1

Typedarrays 1

Types 17

Ambient Declare Any Unknown Bare Class Fields Conditional Types Erased Syntax Func Type Rest Index Signature Intersections Mapped Types Member Update Number Model Static Field Init Symbol Typeof Query Union Values Unions Utility Types

URL 4

File Url Flavor Url Url Parse Urlpattern

util 3

Format Inspect Parse Args Promisify

Weak 1

WebSocket 3

Websocket Binary Websocket Client Websocket Server

Webview (Desktop) 5

Bindings Embedded Inline Spa Spa Server

Workers 12

Await Worker Broadcast Browser Echo Counter Worker News Worker Parallel Sum Port Pair Port Worker Shared Counter Shout Worker Sum Worker Top Level Await Worker

zlib 2

Brotli Zstd Zlib