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utility_types.ts
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utility_types.ts
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/*
This file is part of web3.js.
web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with web3.js. If not, see <http://www.gnu.org/licenses/>.
*/
import { Numbers } from './primitives_types.js';
// Make each attribute mutable by removing `readonly`
export type Mutable<T> = {
-readonly [P in keyof T]: T[P];
};
export type ConnectionEvent = {
code: number;
reason: string;
wasClean?: boolean; // if WS connection was closed properly
};
export type Optional<T, K extends keyof T> = Pick<Partial<T>, K> & Omit<T, K>;
export type EncodingTypes = Numbers | boolean | Numbers[] | boolean[];
export type TypedObject = {
type: string;
value: EncodingTypes;
};
export type TypedObjectAbbreviated = {
t: string;
v: EncodingTypes;
};
export type Sha3Input = TypedObject | TypedObjectAbbreviated | Numbers | boolean | object;
export type IndexKeysForArray<A extends readonly unknown[]> = Exclude<keyof A, keyof []>;
export type ArrayToIndexObject<T extends ReadonlyArray<unknown>> = {
[K in IndexKeysForArray<T>]: T[K];
};
type _Grow<T, A extends Array<T>> = ((x: T, ...xs: A) => void) extends (...a: infer X) => void
? X
: never;
export type GrowToSize<T, A extends Array<T>, N extends number> = {
0: A;
1: GrowToSize<T, _Grow<T, A>, N>;
}[A['length'] extends N ? 0 : 1];
export type FixedSizeArray<T, N extends number> = GrowToSize<T, [], N>;