May 22, 2025Ask AI

TypeScript and JavaScript keywords

While learning TypeScript -- an ongoing process -- I sometimes struggle to find the canonical docs in the Handbook. So today, I asked grok to generate a list of TypeScript and JavaScript keywords and links to their docs.

Thank you all MDN and TypeScript contributors. 🙏

TypeScript

Keyword	Description	Docs
`any`	Represents any type, bypassing type checking	any
`as`	Performs type assertion or const assertion	type assertions
`asserts`	Used in type predicates to assert a condition	assertion functions
`bigint`	Represents large integers	bigint
`boolean`	Represents true or false values	boolean
`declare`	Specifies ambient declarations	ambient declarations
`enum`	Defines a set of named constants	enums
`extends`	Extending types. cf JavaScript extends	extends interface
`infer`	Infers a type variable in conditional types	infer types
`is`	Used in type predicates	type predicates
`keyof`	Creates a type from an object’s keys	keyof types
`module`	Declares a module (similar to namespace)	modules
`namespace`	Organizes code in a named scope	namespaces
`never`	Represents values that never occur	never
`number`	Represents numeric values	number
`object`	Represents non-primitive types	object
`out`	Specifies variance in generic types	variance annotations
`override`	Ensures a method overrides a base class method	override
`readonly`	Prevents reassignment of properties	readonly
`satisfies`	Ensures a value matches a type without casting	satisfies operator
`string`	Represents string values	string
`symbol`	Represents unique identifiers	symbol
`type`	Defines a type alias	type aliases
`undefined`	Represents an undefined value	undefined
`unique`	Used with symbols for unique types	unique symbol
`unknown`	Represents values of unknown type	unknown

JavaScript

Keyword	Description	Docs
`async`	Declares an asynchronous function	async function
`await`	Pauses async function until a promise resolves	await
`break`	Exits a loop or switch statement	break
`case`	Defines a case in a switch statement	switch
`catch`	Handles exceptions in a try-catch block	try...catch
`class`	Declares a class	class
`const`	Declares a block-scoped, read-only variable	const
`continue`	Skips to the next iteration of a loop	continue
`debugger`	Invokes a debugging breakpoint	debugger
`default`	Specifies the default case in a switch or export	switch
`delete`	Deletes a property from an object	delete
`do`	Starts a do-while loop	do...while
`else`	Specifies alternative execution in an if statement	if...else
`export`	Exports a module member	export
`extends`	Indicates inheritance in classes	extends
`false`	Boolean literal for false	Boolean
`finally`	Executes after a try-catch block	try...catch
`for`	Creates a loop (for, for...of, for...in)	for
`function`	Declares a function	function
`get`	Defines a getter method	get
`if`	Conditional statement	if...else
`implements`	Reserved in JavaScript; specifies interface implementation in TypeScript	implements
`import`	Imports module members	import
`in`	Checks if a property exists in an object	in
`instanceof`	Tests if an object is an instance of a constructor	instanceof
`interface`	Reserved in JavaScript; defines type contracts in TypeScript	interface
`let`	Declares a block-scoped variable	let
`new`	Creates an instance of a constructor	new
`null`	Represents the absence of a value	null
`package`	Reserved in JavaScript; not used in TypeScript	strict mode
`private`	Reserved in JavaScript; restricts access in TypeScript	private
`protected`	Reserved in JavaScript; allows subclass access in TypeScript	protected
`public`	Reserved in JavaScript; allows unrestricted access in TypeScript	public
`return`	Exits a function and returns a value	return
`set`	Defines a setter method	set
`static`	Defines static class members	static
`super`	Refers to the parent class	super
`switch`	Evaluates an expression against multiple cases	switch
`this`	Refers to the current object context	this
`throw`	Throws an exception	throw
`true`	Boolean literal for true	Boolean
`try`	Attempts execution that may throw an error	try...catch
`typeof`	Returns the type of a value	typeof
`var`	Declares a variable (function or global scope)	var
`void`	Evaluates an expression without returning a value	void
`while`	Creates a while loop	while
`with`	Extends the scope chain (deprecated)	with
`yield`	Pauses and returns a value from a generator	yield

debug

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  "md": "# TypeScript and JavaScript keywords\n\nWhile learning TypeScript -- an ongoing process -- I sometimes struggle to find the canonical docs in the Handbook. So today, I [asked grok](https://grok.com/share/bGVnYWN5_127524d5-f310-452e-9245-dcf9f0452ca0) to generate a list of TypeScript and JavaScript keywords and links to their docs.\n\n> Thank you all MDN and TypeScript contributors. 🙏\n\n## TypeScript\n| Keyword | Description | Docs |\n|---------|-------------|----------------------------|\n| `any` | Represents any type, bypassing type checking | [any](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#any) |\n| `as` | Performs type assertion or const assertion | [type assertions](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#type-assertions) |\n| `asserts` | Used in type predicates to assert a condition | [assertion functions](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#assertion-functions) |\n| `bigint` | Represents large integers | [bigint](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#bigint) |\n| `boolean` | Represents true or false values | [boolean](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#boolean) |\n| `declare` | Specifies ambient declarations | [ambient declarations](https://www.typescriptlang.org/docs/handbook/2/modules.html#ambient-modules) |\n| `enum` | Defines a set of named constants | [enums](https://www.typescriptlang.org/docs/handbook/enums.html) |\n| `extends` | Extending types. cf JavaScript extends | [extends interface](https://www.typescriptlang.org/docs/handbook/2/objects.html#extending-types) |\n| `infer` | Infers a type variable in conditional types | [infer types](https://www.typescriptlang.org/docs/handbook/2/conditional-types.html#infer-from-conditional-types) |\n| `is` | Used in type predicates | [type predicates](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates) |\n| `keyof` | Creates a type from an object’s keys | [keyof types](https://www.typescriptlang.org/docs/handbook/2/keyof-types.html) |\n| `module` | Declares a module (similar to namespace) | [modules](https://www.typescriptlang.org/docs/handbook/2/modules.html) |\n| `namespace` | Organizes code in a named scope | [namespaces](https://www.typescriptlang.org/docs/handbook/namespaces.html) |\n| `never` | Represents values that never occur | [never](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#never) |\n| `number` | Represents numeric values | [number](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#number) |\n| `object` | Represents non-primitive types | [object](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#object) |\n| `out` | Specifies variance in generic types | [variance annotations](https://www.typescriptlang.org/docs/handbook/2/generics.html#variance-annotations) |\n| `override` | Ensures a method overrides a base class method | [override](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-3.html#override-and-the---noimplicitoverride-flag) |\n| `readonly` | Prevents reassignment of properties | [readonly](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#readonly) |\n| `satisfies` | Ensures a value matches a type without casting | [satisfies operator](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-9.html#the-satisfies-operator) |\n| `string` | Represents string values | [string](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#string) |\n| `symbol` | Represents unique identifiers | [symbol](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#symbol) |\n| `type` | Defines a type alias | [type aliases](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#type-aliases) |\n| `undefined` | Represents an undefined value | [undefined](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#undefined) |\n| `unique` | Used with symbols for unique types | [unique symbol](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#unique-symbol) |\n| `unknown` | Represents values of unknown type | [unknown](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#unknown) |\n\n## JavaScript\n| Keyword | Description | Docs |\n|---------|-------------|----------------------------|\n| `async` | Declares an asynchronous function | [async function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function) |\n| `await` | Pauses async function until a promise resolves | [await](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await) |\n| `break` | Exits a loop or switch statement | [break](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/break) |\n| `case` | Defines a case in a switch statement | [switch](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch) |\n| `catch` | Handles exceptions in a try-catch block | [try...catch](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch) |\n| `class` | Declares a class | [class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes) |\n| `const` | Declares a block-scoped, read-only variable | [const](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const) |\n| `continue` | Skips to the next iteration of a loop | [continue](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/continue) |\n| `debugger` | Invokes a debugging breakpoint | [debugger](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger) |\n| `default` | Specifies the default case in a switch or export | [switch](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch) |\n| `delete` | Deletes a property from an object | [delete](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete) |\n| `do` | Starts a do-while loop | [do...while](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/do...while) |\n| `else` | Specifies alternative execution in an if statement | [if...else](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else) |\n| `export` | Exports a module member | [export](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/export) |\n| `extends` | Indicates inheritance in classes | [extends](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/extends) |\n| `false` | Boolean literal for false | [Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean) |\n| `finally` | Executes after a try-catch block | [try...catch](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch) |\n| `for` | Creates a loop (for, for...of, for...in) | [for](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for) |\n| `function` | Declares a function | [function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function) |\n| `get` | Defines a getter method | [get](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/get) |\n| `if` | Conditional statement | [if...else](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else) |\n| `implements` | Reserved in JavaScript; specifies interface implementation in TypeScript | [implements](https://www.typescriptlang.org/docs/handbook/2/classes.html#implements-clauses) |\n| `import` | Imports module members | [import](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import) |\n| `in` | Checks if a property exists in an object | [in](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in) |\n| `instanceof` | Tests if an object is an instance of a constructor | [instanceof](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof) |\n| `interface` | Reserved in JavaScript; defines type contracts in TypeScript | [interface](https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#interfaces) |\n| `let` | Declares a block-scoped variable | [let](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let) |\n| `new` | Creates an instance of a constructor | [new](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new) |\n| `null` | Represents the absence of a value | [null](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null) |\n| `package` | Reserved in JavaScript; not used in TypeScript | [strict mode](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode) |\n| `private` | Reserved in JavaScript; restricts access in TypeScript | [private](https://www.typescriptlang.org/docs/handbook/2/classes.html#private) |\n| `protected` | Reserved in JavaScript; allows subclass access in TypeScript | [protected](https://www.typescriptlang.org/docs/handbook/2/classes.html#protected) |\n| `public` | Reserved in JavaScript; allows unrestricted access in TypeScript | [public](https://www.typescriptlang.org/docs/handbook/2/classes.html#public) |\n| `return` | Exits a function and returns a value | [return](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/return) |\n| `set` | Defines a setter method | [set](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/set) |\n| `static` | Defines static class members | [static](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static) |\n| `super` | Refers to the parent class | [super](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/super) |\n| `switch` | Evaluates an expression against multiple cases | [switch](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch) |\n| `this` | Refers to the current object context | [this](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this) |\n| `throw` | Throws an exception | [throw](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/throw) |\n| `true` | Boolean literal for true | [Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean) |\n| `try` | Attempts execution that may throw an error | [try...catch](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch) |\n| `typeof` | Returns the type of a value | [typeof](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof) |\n| `var` | Declares a variable (function or global scope) | [var](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/var) |\n| `void` | Evaluates an expression without returning a value | [void](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/void) |\n| `while` | Creates a while loop | [while](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/while) |\n| `with` | Extends the scope chain (deprecated) | [with](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/with) |\n| `yield` | Pauses and returns a value from a generator | [yield](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/yield) |\n",
  "html": "<h1>TypeScript and JavaScript keywords</h1>\n<p>While learning TypeScript -- an ongoing process -- I sometimes struggle to find the canonical docs in the Handbook. So today, I <a href=\"https://grok.com/share/bGVnYWN5_127524d5-f310-452e-9245-dcf9f0452ca0\">asked grok</a> to generate a list of TypeScript and JavaScript keywords and links to their docs.</p>\n<blockquote>\n<p>Thank you all MDN and TypeScript contributors. 🙏</p>\n</blockquote>\n<h2>TypeScript</h2>\n<table>\n<thead>\n<tr>\n<th>Keyword</th>\n<th>Description</th>\n<th>Docs</th>\n</tr>\n</thead>\n<tbody>\n<tr>\n<td><code>any</code></td>\n<td>Represents any type, bypassing type checking</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#any\">any</a></td>\n</tr>\n<tr>\n<td><code>as</code></td>\n<td>Performs type assertion or const assertion</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#type-assertions\">type assertions</a></td>\n</tr>\n<tr>\n<td><code>asserts</code></td>\n<td>Used in type predicates to assert a condition</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#assertion-functions\">assertion functions</a></td>\n</tr>\n<tr>\n<td><code>bigint</code></td>\n<td>Represents large integers</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#bigint\">bigint</a></td>\n</tr>\n<tr>\n<td><code>boolean</code></td>\n<td>Represents true or false values</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#boolean\">boolean</a></td>\n</tr>\n<tr>\n<td><code>declare</code></td>\n<td>Specifies ambient declarations</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/modules.html#ambient-modules\">ambient declarations</a></td>\n</tr>\n<tr>\n<td><code>enum</code></td>\n<td>Defines a set of named constants</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/enums.html\">enums</a></td>\n</tr>\n<tr>\n<td><code>extends</code></td>\n<td>Extending types. cf JavaScript extends</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/objects.html#extending-types\">extends interface</a></td>\n</tr>\n<tr>\n<td><code>infer</code></td>\n<td>Infers a type variable in conditional types</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/conditional-types.html#infer-from-conditional-types\">infer types</a></td>\n</tr>\n<tr>\n<td><code>is</code></td>\n<td>Used in type predicates</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates\">type predicates</a></td>\n</tr>\n<tr>\n<td><code>keyof</code></td>\n<td>Creates a type from an object’s keys</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/keyof-types.html\">keyof types</a></td>\n</tr>\n<tr>\n<td><code>module</code></td>\n<td>Declares a module (similar to namespace)</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/modules.html\">modules</a></td>\n</tr>\n<tr>\n<td><code>namespace</code></td>\n<td>Organizes code in a named scope</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/namespaces.html\">namespaces</a></td>\n</tr>\n<tr>\n<td><code>never</code></td>\n<td>Represents values that never occur</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#never\">never</a></td>\n</tr>\n<tr>\n<td><code>number</code></td>\n<td>Represents numeric values</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#number\">number</a></td>\n</tr>\n<tr>\n<td><code>object</code></td>\n<td>Represents non-primitive types</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#object\">object</a></td>\n</tr>\n<tr>\n<td><code>out</code></td>\n<td>Specifies variance in generic types</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/generics.html#variance-annotations\">variance annotations</a></td>\n</tr>\n<tr>\n<td><code>override</code></td>\n<td>Ensures a method overrides a base class method</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-3.html#override-and-the---noimplicitoverride-flag\">override</a></td>\n</tr>\n<tr>\n<td><code>readonly</code></td>\n<td>Prevents reassignment of properties</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#readonly\">readonly</a></td>\n</tr>\n<tr>\n<td><code>satisfies</code></td>\n<td>Ensures a value matches a type without casting</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-9.html#the-satisfies-operator\">satisfies operator</a></td>\n</tr>\n<tr>\n<td><code>string</code></td>\n<td>Represents string values</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#string\">string</a></td>\n</tr>\n<tr>\n<td><code>symbol</code></td>\n<td>Represents unique identifiers</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#symbol\">symbol</a></td>\n</tr>\n<tr>\n<td><code>type</code></td>\n<td>Defines a type alias</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#type-aliases\">type aliases</a></td>\n</tr>\n<tr>\n<td><code>undefined</code></td>\n<td>Represents an undefined value</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#undefined\">undefined</a></td>\n</tr>\n<tr>\n<td><code>unique</code></td>\n<td>Used with symbols for unique types</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#unique-symbol\">unique symbol</a></td>\n</tr>\n<tr>\n<td><code>unknown</code></td>\n<td>Represents values of unknown type</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#unknown\">unknown</a></td>\n</tr>\n</tbody>\n</table>\n<h2>JavaScript</h2>\n<table>\n<thead>\n<tr>\n<th>Keyword</th>\n<th>Description</th>\n<th>Docs</th>\n</tr>\n</thead>\n<tbody>\n<tr>\n<td><code>async</code></td>\n<td>Declares an asynchronous function</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function\">async function</a></td>\n</tr>\n<tr>\n<td><code>await</code></td>\n<td>Pauses async function until a promise resolves</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await\">await</a></td>\n</tr>\n<tr>\n<td><code>break</code></td>\n<td>Exits a loop or switch statement</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/break\">break</a></td>\n</tr>\n<tr>\n<td><code>case</code></td>\n<td>Defines a case in a switch statement</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch\">switch</a></td>\n</tr>\n<tr>\n<td><code>catch</code></td>\n<td>Handles exceptions in a try-catch block</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch\">try...catch</a></td>\n</tr>\n<tr>\n<td><code>class</code></td>\n<td>Declares a class</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes\">class</a></td>\n</tr>\n<tr>\n<td><code>const</code></td>\n<td>Declares a block-scoped, read-only variable</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const\">const</a></td>\n</tr>\n<tr>\n<td><code>continue</code></td>\n<td>Skips to the next iteration of a loop</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/continue\">continue</a></td>\n</tr>\n<tr>\n<td><code>debugger</code></td>\n<td>Invokes a debugging breakpoint</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger\">debugger</a></td>\n</tr>\n<tr>\n<td><code>default</code></td>\n<td>Specifies the default case in a switch or export</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch\">switch</a></td>\n</tr>\n<tr>\n<td><code>delete</code></td>\n<td>Deletes a property from an object</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete\">delete</a></td>\n</tr>\n<tr>\n<td><code>do</code></td>\n<td>Starts a do-while loop</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/do...while\">do...while</a></td>\n</tr>\n<tr>\n<td><code>else</code></td>\n<td>Specifies alternative execution in an if statement</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else\">if...else</a></td>\n</tr>\n<tr>\n<td><code>export</code></td>\n<td>Exports a module member</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/export\">export</a></td>\n</tr>\n<tr>\n<td><code>extends</code></td>\n<td>Indicates inheritance in classes</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/extends\">extends</a></td>\n</tr>\n<tr>\n<td><code>false</code></td>\n<td>Boolean literal for false</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean\">Boolean</a></td>\n</tr>\n<tr>\n<td><code>finally</code></td>\n<td>Executes after a try-catch block</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch\">try...catch</a></td>\n</tr>\n<tr>\n<td><code>for</code></td>\n<td>Creates a loop (for, for...of, for...in)</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for\">for</a></td>\n</tr>\n<tr>\n<td><code>function</code></td>\n<td>Declares a function</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function\">function</a></td>\n</tr>\n<tr>\n<td><code>get</code></td>\n<td>Defines a getter method</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/get\">get</a></td>\n</tr>\n<tr>\n<td><code>if</code></td>\n<td>Conditional statement</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else\">if...else</a></td>\n</tr>\n<tr>\n<td><code>implements</code></td>\n<td>Reserved in JavaScript; specifies interface implementation in TypeScript</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/classes.html#implements-clauses\">implements</a></td>\n</tr>\n<tr>\n<td><code>import</code></td>\n<td>Imports module members</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import\">import</a></td>\n</tr>\n<tr>\n<td><code>in</code></td>\n<td>Checks if a property exists in an object</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in\">in</a></td>\n</tr>\n<tr>\n<td><code>instanceof</code></td>\n<td>Tests if an object is an instance of a constructor</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof\">instanceof</a></td>\n</tr>\n<tr>\n<td><code>interface</code></td>\n<td>Reserved in JavaScript; defines type contracts in TypeScript</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/everyday-types.html#interfaces\">interface</a></td>\n</tr>\n<tr>\n<td><code>let</code></td>\n<td>Declares a block-scoped variable</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let\">let</a></td>\n</tr>\n<tr>\n<td><code>new</code></td>\n<td>Creates an instance of a constructor</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new\">new</a></td>\n</tr>\n<tr>\n<td><code>null</code></td>\n<td>Represents the absence of a value</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null\">null</a></td>\n</tr>\n<tr>\n<td><code>package</code></td>\n<td>Reserved in JavaScript; not used in TypeScript</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode\">strict mode</a></td>\n</tr>\n<tr>\n<td><code>private</code></td>\n<td>Reserved in JavaScript; restricts access in TypeScript</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/classes.html#private\">private</a></td>\n</tr>\n<tr>\n<td><code>protected</code></td>\n<td>Reserved in JavaScript; allows subclass access in TypeScript</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/classes.html#protected\">protected</a></td>\n</tr>\n<tr>\n<td><code>public</code></td>\n<td>Reserved in JavaScript; allows unrestricted access in TypeScript</td>\n<td><a href=\"https://www.typescriptlang.org/docs/handbook/2/classes.html#public\">public</a></td>\n</tr>\n<tr>\n<td><code>return</code></td>\n<td>Exits a function and returns a value</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/return\">return</a></td>\n</tr>\n<tr>\n<td><code>set</code></td>\n<td>Defines a setter method</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/set\">set</a></td>\n</tr>\n<tr>\n<td><code>static</code></td>\n<td>Defines static class members</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static\">static</a></td>\n</tr>\n<tr>\n<td><code>super</code></td>\n<td>Refers to the parent class</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/super\">super</a></td>\n</tr>\n<tr>\n<td><code>switch</code></td>\n<td>Evaluates an expression against multiple cases</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch\">switch</a></td>\n</tr>\n<tr>\n<td><code>this</code></td>\n<td>Refers to the current object context</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this\">this</a></td>\n</tr>\n<tr>\n<td><code>throw</code></td>\n<td>Throws an exception</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/throw\">throw</a></td>\n</tr>\n<tr>\n<td><code>true</code></td>\n<td>Boolean literal for true</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean\">Boolean</a></td>\n</tr>\n<tr>\n<td><code>try</code></td>\n<td>Attempts execution that may throw an error</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch\">try...catch</a></td>\n</tr>\n<tr>\n<td><code>typeof</code></td>\n<td>Returns the type of a value</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof\">typeof</a></td>\n</tr>\n<tr>\n<td><code>var</code></td>\n<td>Declares a variable (function or global scope)</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/var\">var</a></td>\n</tr>\n<tr>\n<td><code>void</code></td>\n<td>Evaluates an expression without returning a value</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/void\">void</a></td>\n</tr>\n<tr>\n<td><code>while</code></td>\n<td>Creates a while loop</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/while\">while</a></td>\n</tr>\n<tr>\n<td><code>with</code></td>\n<td>Extends the scope chain (deprecated)</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/with\">with</a></td>\n</tr>\n<tr>\n<td><code>yield</code></td>\n<td>Pauses and returns a value from a generator</td>\n<td><a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/yield\">yield</a></td>\n</tr>\n</tbody>\n</table>\n"
}