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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | 120x 120x 17x 120x 15x 120x 17x 6x 120x 120x 120x 109x 120x 1682x 109x 120x 120x 29x 18x | import type { Primitive } from '@endo/captp';
import type { PromiseKit } from '@endo/promise-kit';
import type { Infer, Struct } from '@metamask/superstruct';
import { array, empty, is, object, string, union } from '@metamask/superstruct';
import {
isObject,
UnsafeJsonStruct,
JsonRpcRequestStruct,
JsonRpcResponseStruct,
JsonRpcNotificationStruct,
} from '@metamask/utils';
import type {
JsonRpcNotification,
JsonRpcRequest,
JsonRpcResponse,
} from '@metamask/utils';
export type TypeGuard<Type> = (value: unknown) => value is Type;
export type ExtractGuardType<Guard, Bound = unknown> = Guard extends (
value: unknown,
) => value is infer Type
? Type extends Bound
? Type
: never
: never;
const primitives = new Set([
'string',
'number',
'bigint',
'boolean',
'symbol',
'null',
'undefined',
]);
export const isPrimitive = (value: unknown): value is Primitive =>
value === null || primitives.has(typeof value);
export const isTypedArray = <ElementType>(
value: unknown,
isElement: TypeGuard<ElementType>,
): value is ElementType[] =>
Array.isArray(value) && !value.some((ele) => !isElement(ele));
export const isTypedObject = <ValueType>(
value: unknown,
isValue: TypeGuard<ValueType>,
): value is { [Key in keyof object]: ValueType } =>
isObject(value) && !Object.values(value).some((val) => !isValue(val));
export type PromiseCallbacks<Resolve = unknown> = Omit<
PromiseKit<Resolve>,
'promise'
>;
/**
* Utility type that wraps all method return types in Promise.
* Methods already returning Promise<T> remain Promise<T>.
*/
export type Promisified<T> = {
[K in keyof T]: T[K] extends (...args: infer A) => Promise<infer R>
? (...args: A) => Promise<R>
: T[K] extends (...args: infer A) => infer R
? (...args: A) => Promise<R>
: T[K];
};
export const EmptyJsonArray = empty(array(UnsafeJsonStruct));
export type EmptyJsonArray = Infer<typeof EmptyJsonArray>;
export type JsonRpcCall = JsonRpcRequest | JsonRpcNotification;
export const JsonRpcCallStruct: Struct<JsonRpcCall> = union([
JsonRpcRequestStruct,
JsonRpcNotificationStruct,
]);
export const isJsonRpcCall = (value: unknown): value is JsonRpcCall =>
is(value, JsonRpcCallStruct);
export type JsonRpcMessage =
| JsonRpcNotification
| JsonRpcRequest
| JsonRpcResponse;
export const JsonRpcMessageStruct: Struct<JsonRpcMessage> = union([
JsonRpcNotificationStruct,
JsonRpcRequestStruct,
JsonRpcResponseStruct,
]);
export const isJsonRpcMessage = (value: unknown): value is JsonRpcMessage =>
is(value, JsonRpcMessageStruct);
/**
* Check whether a value has the shape of Endo CapData (`{ body: string, slots: string[] }`).
*
* @param value - The value to check.
* @returns `true` when `value` looks like CapData.
*/
const CapDataStruct = object({ body: string(), slots: array(string()) });
export const isCapData = (
value: unknown,
): value is { body: string; slots: string[] } => is(value, CapDataStruct);
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