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/**
* Gecko XPCOM builtins.
*/
declare global {
/**
* Generic IDs are created by most code which passes a nsID to js.
* https://searchfox.org/mozilla-central/source/js/xpconnect/src/XPCJSID.cpp#24
*/
interface nsID<uuid = string> {
readonly number: uuid;
}
/**
* In addition to nsID, interface IIDs support instanceof type guards,
* and expose constants defined on the class, including variants from enums.
* https://searchfox.org/mozilla-central/source/js/xpconnect/src/XPCJSID.cpp#45
*/
type nsJSIID<iface, enums = {}> = nsID & Constants<iface> & enums & {
new (_: never): void;
prototype: iface;
}
/** A union type of all known interface IIDs. */
type nsIID = nsIXPCComponents_Interfaces[keyof nsIXPCComponents_Interfaces];
/** A generic to resolve QueryInterface return type from a nsIID. */
export type nsQIResult<iid> = iid extends { prototype: infer U } ? U : never;
/** u32 */
type nsresult = u32;
// Numeric typedefs, useful as a quick reference in method signatures.
type double = number;
type float = number;
type i16 = number;
type i32 = number;
type i64 = number;
type u16 = number;
type u32 = number;
type u64 = number;
type u8 = number;
}
/**
* XPCOM utility types.
*/
/** XPCOM inout param is passed in as a js object with a value property. */
type InOutParam<T> = { value: T };
/** XPCOM out param is written to the passed in object's value property. */
type OutParam<T> = { value?: T };
/** A named type to enable interfaces to inherit from enums. */
type Enums<enums> = enums;
/** Callable accepts either form of a [function] interface. */
type Callable<iface> = iface | Extract<iface[keyof iface], Function>
/** Picks only const number properties from T. */
type Constants<T> = { [K in keyof T as IfConst<K, T[K]>]: T[K] };
/** Resolves only for keys K whose corresponding type T is a narrow number. */
type IfConst<K, T> = T extends number ? (number extends T ? never : K) : never;
export {};
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