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- /// <reference lib="es2020.bigint"/>
- // TODO: This can just be `export type Primitive = not object` when the `not` keyword is out.
- /**
- Matches any [primitive value](https://developer.mozilla.org/en-US/docs/Glossary/Primitive).
- */
- export type Primitive =
- | null
- | undefined
- | string
- | number
- | boolean
- | symbol
- | bigint;
- // TODO: Remove the `= unknown` sometime in the future when most users are on TS 3.5 as it's now the default
- /**
- Matches a [`class` constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes).
- */
- export type Class<T = unknown, Arguments extends any[] = any[]> = new(...arguments_: Arguments) => T;
- /**
- Matches a JSON object.
- This type can be useful to enforce some input to be JSON-compatible or as a super-type to be extended from. Don't use this as a direct return type as the user would have to double-cast it: `jsonObject as unknown as CustomResponse`. Instead, you could extend your CustomResponse type from it to ensure your type only uses JSON-compatible types: `interface CustomResponse extends JsonObject { … }`.
- */
- export type JsonObject = {[Key in string]?: JsonValue};
- /**
- Matches a JSON array.
- */
- export interface JsonArray extends Array<JsonValue> {}
- /**
- Matches any valid JSON value.
- */
- export type JsonValue = string | number | boolean | null | JsonObject | JsonArray;
- declare global {
- interface SymbolConstructor {
- readonly observable: symbol;
- }
- }
- /**
- Matches a value that is like an [Observable](https://github.com/tc39/proposal-observable).
- */
- export interface ObservableLike {
- subscribe(observer: (value: unknown) => void): void;
- [Symbol.observable](): ObservableLike;
- }
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