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Restore navigator.connection DOM typings #64334

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Restore navigator.connection DOM typings #64334

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Initial plan
Copilot Sep 19, 2026
b09984f
Restore navigator connection DOM typings
Copilot Sep 19, 2026
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18 changes: 17 additions & 1 deletion tsc/internal/bundled/libs/lib.dom.d.ts
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Expand Up @@ -25777,7 +25777,7 @@ declare var NavigationTransition: {
*
* [MDN Reference](https://developer.mozilla.org/docs/Web/API/Navigator)
*/
interface Navigator extends NavigatorAutomationInformation, NavigatorBadge, NavigatorConcurrentHardware, NavigatorContentUtils, NavigatorCookies, NavigatorGPU, NavigatorID, NavigatorLanguage, NavigatorLocks, NavigatorOnLine, NavigatorPlugins, NavigatorStorage {
interface Navigator extends NavigatorAutomationInformation, NavigatorBadge, NavigatorConcurrentHardware, NavigatorContentUtils, NavigatorCookies, NavigatorGPU, NavigatorID, NavigatorLanguage, NavigatorNetworkInformation, NavigatorLocks, NavigatorOnLine, NavigatorPlugins, NavigatorStorage {
/**
* The **`clipboard`** read-only property of the Navigator interface returns a Clipboard object used to read and write the clipboard's contents.
* Available only in secure contexts.
Expand Down Expand Up @@ -26005,6 +26005,11 @@ declare var NavigatorLogin: {
new(): NavigatorLogin;
};

interface NavigatorNetworkInformation {
/** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Navigator/connection) */
readonly connection: NetworkInformation;
}

interface NavigatorOnLine {
/** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Navigator/onLine) */
readonly onLine: boolean;
Expand All @@ -26027,6 +26032,16 @@ interface NavigatorStorage {
readonly storage: StorageManager;
}

interface NetworkInformation extends EventTarget {
/** [MDN Reference](https://developer.mozilla.org/docs/Web/API/NetworkInformation/type) */
readonly type: ConnectionType;
}

declare var NetworkInformation: {
prototype: NetworkInformation;
new(): NetworkInformation;
};

/**
* The DOM **`Node`** interface is an abstract base class upon which many other DOM API objects are based, thus letting those object types be used similarly and often interchangeably. As an abstract class, there is no such thing as a plain Node object. All objects that implement Node functionality are based on one of its subclasses. Most notable are Document, Element, and DocumentFragment.
*
Expand Down Expand Up @@ -44282,6 +44297,7 @@ type ColorGamut = "p3" | "rec2020" | "srgb";
type ColorSpaceConversion = "default" | "none";
type CompositeOperation = "accumulate" | "add" | "replace";
type CompositeOperationOrAuto = "accumulate" | "add" | "auto" | "replace";
type ConnectionType = "bluetooth" | "cellular" | "ethernet" | "mixed" | "none" | "other" | "unknown" | "wifi";
type CompressionFormat = "deflate" | "deflate-raw" | "gzip";
type CookieSameSite = "lax" | "none" | "strict";
type CredentialMediationRequirement = "conditional" | "optional" | "required" | "silent";
Expand Down
8 changes: 4 additions & 4 deletions tsc/testdata/baselines/reference/compiler/mappedTypeRecursiveInference.types
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5 changes: 4 additions & 1 deletion tsc/testdata/baselines/reference/compiler/verifyDefaultLib_dom.js
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@@ -1,8 +1,11 @@
//// [tests/cases/compiler/verifyDefaultLib_dom.ts] ////

//// [verifyDefaultLib_dom.ts]
var x: HTMLElement;
var x: HTMLElement;
var connection = navigator.connection;


//// [verifyDefaultLib_dom.js]
"use strict";
var x;
var connection = navigator.connection;
6 changes: 6 additions & 0 deletions tsc/testdata/baselines/reference/compiler/verifyDefaultLib_dom.symbols
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Expand Up @@ -5,3 +5,9 @@ var x: HTMLElement;
>x : Symbol(x, Decl(verifyDefaultLib_dom.ts, 0, 3))
>HTMLElement : Symbol(HTMLElement, Decl(lib.dom.d.ts, --, --), Decl(lib.dom.d.ts, --, --))

var connection = navigator.connection;
>connection : Symbol(connection, Decl(verifyDefaultLib_dom.ts, 1, 3))
>navigator.connection : Symbol(NavigatorNetworkInformation.connection, Decl(lib.dom.d.ts, --, --))
>navigator : Symbol(navigator, Decl(lib.dom.d.ts, --, --))
>connection : Symbol(NavigatorNetworkInformation.connection, Decl(lib.dom.d.ts, --, --))

6 changes: 6 additions & 0 deletions tsc/testdata/baselines/reference/compiler/verifyDefaultLib_dom.types
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Expand Up @@ -4,3 +4,9 @@
var x: HTMLElement;
>x : HTMLElement

var connection = navigator.connection;
>connection : NetworkInformation
>navigator.connection : NetworkInformation
>navigator : Navigator
>connection : NetworkInformation

2 changes: 1 addition & 1 deletion tsc/testdata/baselines/reference/conformance/globalThisBlockscopedProperties.types
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3 changes: 2 additions & 1 deletion tsc/testdata/tests/cases/compiler/verifyDefaultLib_dom.ts
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Expand Up @@ -5,4 +5,5 @@
// @skipDefaultLibCheck: false
// @lib: es2015,es2016,es2017,dom,scripthost

var x: HTMLElement;
var x: HTMLElement;
var connection = navigator.connection;