88 lines
3.2 KiB
TypeScript
88 lines
3.2 KiB
TypeScript
// DataFn can take any object as input and has no return value. The input is
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// allowed to be undefined.
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type DataFn = (data?: any) => void;
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// Err is an error type that is either a string or a null. If the value is
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// null, that indicates that there was no error. If the value is a string, it
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// indicates that there was an error and the string contains the error message.
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//
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// The skynet libraries prefer this error type to the standard Error type
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// because many times skynet libraries need to pass errors over postMessage,
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// and the 'Error' type is not able to be sent over postMessage.
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type Err = string | null;
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// ErrFn must take an error message as input. The input is not allowed to be
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// undefined or null, there must be an error.
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type ErrFn = (errMsg: string) => void;
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// ErrTuple is a type that pairs a 'data' field with an 'err' field. Skynet
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// libraries typically prefer returning ErrTuples to throwing or rejecting,
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// because it allows upstream code to avoid the try/catch/throw pattern. Though
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// the pattern is much celebrated in javascript, it encourages relaxed error
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// handling, and often makes error handling much more difficult because the try
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// and the catch are in different scopes.
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//
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// Most of the Skynet core libraries do not have any `throws` anywhere in their
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// API.
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//
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// Typically, an ErrTuple will have only one field filled out. If data is
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// returned, the err should be 'null'. If an error is returned, the data field
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// should generally be empty. Callers are expected to check the error before
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// they access any part of the data field.
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type ErrTuple<T = any> = [data: T, err: Err];
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// KernelAuthStatus is the structure of a message that gets sent by the kernel
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// containing its auth status. Auth occurs in 5 stages.
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//
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// Stage 0; no auth updates
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// Stage 1: bootloader is loaded, user is not yet logged in
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// Stage 2: bootloader is loaded, user is logged in
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// Stage 3: kernel is loaded, user is logged in
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// Stage 4: kernel is loaded, user is logging out (refresh iminent)
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//
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// 'kernelLoaded' is initially set to "not yet" and will be updated when the
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// kernel has loaded. If it is set to "success", it means the kernel loaded
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// without issues. If it is set to anything else, it means that there was an
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// error, and the new value is the error.
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//
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// 'kernelLoaded' will not be changed until 'loginComplete' has been set to
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// true. 'loginComplete' can be set to true immediately if the user is already
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// logged in.
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//
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// 'logoutComplete' can be set to 'true' at any point, which indicates that the
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// auth cycle needs to reset.
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interface KernelAuthStatus {
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loginComplete: boolean;
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kernelLoaded: "not yet" | "success" | string;
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logoutComplete: boolean;
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}
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interface Portal {
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id: string;
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name: string;
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url: string;
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}
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// RequestOverrideResponse defines the type that the kernel returns as a
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// response to a requestOverride call.
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interface RequestOverrideResponse {
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override: boolean;
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headers?: any; // TODO: I don't know how to do an array of types.
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body?: Uint8Array;
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}
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export interface KeyPair {
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publicKey: Uint8Array;
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privateKey: Uint8Array;
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}
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export {
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DataFn,
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ErrFn,
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Err,
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ErrTuple,
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KernelAuthStatus,
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RequestOverrideResponse,
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Portal,
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};
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