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@mysten/bcs

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BCS - Canonical Binary Serialization implementation for JavaScript

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import type { BcsTypeOptions } from './bcs-type.js'; import { BcsEnum, BcsStruct, BcsTuple, BcsType } from './bcs-type.js'; import type { EnumInputShape, EnumOutputShape, InferBcsInput, InferBcsType, JoinString } from './types.js'; declare function fixedArray<T extends BcsType<any>, Name extends string = string>(size: number, type: T, options?: BcsTypeOptions<InferBcsType<T>[], Iterable<InferBcsInput<T>> & { length: number; }, Name>): BcsType<InferBcsType<T>[], Iterable<InferBcsInput<T>> & { length: number; }, Name>; declare function fixedArray<T, Input, Name extends string = string>(size: number, type: BcsType<T, Input>, options?: BcsTypeOptions<T[], Iterable<Input> & { length: number; }, Name>): BcsType<T[], Iterable<Input> & { length: number; }, Name>; declare function option<T extends BcsType<any>>(type: T): BcsType<InferBcsType<T> | null, InferBcsInput<T> | null | undefined, `Option<${T['name']}>`>; declare function option<T, Input, Name extends string = string>(type: BcsType<T, Input, Name>): BcsType<T | null, Input | null | undefined>; declare function vector<T extends BcsType<any>, Name extends string = `vector<${T['name']}>`>(type: T, options?: BcsTypeOptions<InferBcsType<T>[], Iterable<InferBcsInput<T>> & { length: number; }, Name>): BcsType<InferBcsType<T>[], Iterable<InferBcsInput<T>> & { length: number; }, Name>; declare function vector<T, Input, Name extends string = string>(type: BcsType<T, Input, Name>, options?: BcsTypeOptions<T[], Iterable<Input> & { length: number; }, `vector<${Name}>`>): BcsType<T[], Iterable<Input> & { length: number; }, `vector<${Name}>`>; declare function map<K extends BcsType<any>, V extends BcsType<any>>(keyType: K, valueType: V): BcsType<Map<InferBcsType<K>, InferBcsType<V>>, Map<InferBcsInput<K>, InferBcsInput<V>>, `Map<${K['name']}, ${V['name']}>`>; declare function map<K, V, InputK = K, InputV = V>(keyType: BcsType<K, InputK>, valueType: BcsType<V, InputV>): BcsType<Map<K, V>, Map<InputK, InputV>, `Map<${string}, ${string}>`>; export declare const bcs: { /** * Creates a BcsType that can be used to read and write an 8-bit unsigned integer. * @example * bcs.u8().serialize(255).toBytes() // Uint8Array [ 255 ] */ u8(options?: BcsTypeOptions<number>): BcsType<number, number, "u8">; /** * Creates a BcsType that can be used to read and write a 16-bit unsigned integer. * @example * bcs.u16().serialize(65535).toBytes() // Uint8Array [ 255, 255 ] */ u16(options?: BcsTypeOptions<number>): BcsType<number, number, "u16">; /** * Creates a BcsType that can be used to read and write a 32-bit unsigned integer. * @example * bcs.u32().serialize(4294967295).toBytes() // Uint8Array [ 255, 255, 255, 255 ] */ u32(options?: BcsTypeOptions<number>): BcsType<number, number, "u32">; /** * Creates a BcsType that can be used to read and write a 64-bit unsigned integer. * @example * bcs.u64().serialize(1).toBytes() // Uint8Array [ 1, 0, 0, 0, 0, 0, 0, 0 ] */ u64(options?: BcsTypeOptions<string, number | bigint | string>): BcsType<string, string | number | bigint, "u64">; /** * Creates a BcsType that can be used to read and write a 128-bit unsigned integer. * @example * bcs.u128().serialize(1).toBytes() // Uint8Array [ 1, ..., 0 ] */ u128(options?: BcsTypeOptions<string, number | bigint | string>): BcsType<string, string | number | bigint, "u128">; /** * Creates a BcsType that can be used to read and write a 256-bit unsigned integer. * @example * bcs.u256().serialize(1).toBytes() // Uint8Array [ 1, ..., 0 ] */ u256(options?: BcsTypeOptions<string, number | bigint | string>): BcsType<string, string | number | bigint, "u256">; /** * Creates a BcsType that can be used to read and write boolean values. * @example * bcs.bool().serialize(true).toBytes() // Uint8Array [ 1 ] */ bool(options?: BcsTypeOptions<boolean>): BcsType<boolean, boolean, "bool">; /** * Creates a BcsType that can be used to read and write unsigned LEB encoded integers * @example * */ uleb128(options?: BcsTypeOptions<number>): BcsType<number, number, string>; /** * Creates a BcsType representing a fixed length byte array * @param size The number of bytes this types represents * @example * bcs.bytes(3).serialize(new Uint8Array([1, 2, 3])).toBytes() // Uint8Array [1, 2, 3] */ bytes<T extends number>(size: T, options?: BcsTypeOptions<Uint8Array, Iterable<number>>): BcsType<Uint8Array<ArrayBufferLike>, Iterable<number>, `bytes[${T}]`>; /** * Creates a BcsType representing a variable length byte array * * @example * bcs.byteVector().serialize([1, 2, 3]).toBytes() // Uint8Array [3, 1, 2, 3] */ byteVector(options?: BcsTypeOptions<Uint8Array, Iterable<number>>): BcsType<Uint8Array<ArrayBufferLike>, Iterable<number>, "vector<u8>">; /** * Creates a BcsType that can ser/de string values. Strings will be UTF-8 encoded * @example * bcs.string().serialize('a').toBytes() // Uint8Array [ 1, 97 ] */ string(options?: BcsTypeOptions<string>): BcsType<string, string, "string">; /** * Creates a BcsType that represents a fixed length array of a given type * @param size The number of elements in the array * @param type The BcsType of each element in the array * @example * bcs.fixedArray(3, bcs.u8()).serialize([1, 2, 3]).toBytes() // Uint8Array [ 1, 2, 3 ] */ fixedArray: typeof fixedArray; /** * Creates a BcsType representing an optional value * @param type The BcsType of the optional value * @example * bcs.option(bcs.u8()).serialize(null).toBytes() // Uint8Array [ 0 ] * bcs.option(bcs.u8()).serialize(1).toBytes() // Uint8Array [ 1, 1 ] */ option: typeof option; /** * Creates a BcsType representing a variable length vector of a given type * @param type The BcsType of each element in the vector * * @example * bcs.vector(bcs.u8()).toBytes([1, 2, 3]) // Uint8Array [ 3, 1, 2, 3 ] */ vector: typeof vector; /** * Creates a BcsType representing a tuple of a given set of types * @param types The BcsTypes for each element in the tuple * * @example * const tuple = bcs.tuple([bcs.u8(), bcs.string(), bcs.bool()]) * tuple.serialize([1, 'a', true]).toBytes() // Uint8Array [ 1, 1, 97, 1 ] */ tuple<const T extends readonly BcsType<any, any>[], const Name extends string = `(${JoinString<{ [K in keyof T]: T[K] extends BcsType<any, any, infer T_1 extends string> ? T_1 : never; }, ", ">})`>(fields: T, options?: BcsTypeOptions<{ -readonly [K_1 in keyof T]: T[K_1] extends BcsType<infer T_1, any> ? T_1 : never; }, { [K_1 in keyof T]: T[K_1] extends BcsType<any, infer T_1> ? T_1 : never; }, Name>): BcsTuple<T, Name>; /** * Creates a BcsType representing a struct of a given set of fields * @param name The name of the struct * @param fields The fields of the struct. The order of the fields affects how data is serialized and deserialized * * @example * const struct = bcs.struct('MyStruct', { * a: bcs.u8(), * b: bcs.string(), * }) * struct.serialize({ a: 1, b: 'a' }).toBytes() // Uint8Array [ 1, 1, 97 ] */ struct<T extends Record<string, BcsType<any>>, const Name extends string = string>(name: Name, fields: T, options?: Omit<BcsTypeOptions<{ [K in keyof T]: T[K] extends BcsType<infer U, any> ? U : never; }, { [K in keyof T]: T[K] extends BcsType<any, infer U> ? U : never; }>, "name">): BcsStruct<T, string>; /** * Creates a BcsType representing an enum of a given set of options * @param name The name of the enum * @param values The values of the enum. The order of the values affects how data is serialized and deserialized. * null can be used to represent a variant with no data. * * @example * const enum = bcs.enum('MyEnum', { * A: bcs.u8(), * B: bcs.string(), * C: null, * }) * enum.serialize({ A: 1 }).toBytes() // Uint8Array [ 0, 1 ] * enum.serialize({ B: 'a' }).toBytes() // Uint8Array [ 1, 1, 97 ] * enum.serialize({ C: true }).toBytes() // Uint8Array [ 2 ] */ enum<T extends Record<string, BcsType<any> | null>, const Name extends string = string>(name: Name, fields: T, options?: Omit<BcsTypeOptions<EnumOutputShape<{ [K in keyof T]: T[K] extends BcsType<infer U, any, any> ? U : true; }>, EnumInputShape<{ [K in keyof T]: T[K] extends BcsType<any, infer U, any> ? U : boolean | object | null; }>, Name>, "name">): BcsEnum<T, Name>; /** * Creates a BcsType representing a map of a given key and value type * @param keyType The BcsType of the key * @param valueType The BcsType of the value * @example * const map = bcs.map(bcs.u8(), bcs.string()) * map.serialize(new Map([[2, 'a']])).toBytes() // Uint8Array [ 1, 2, 1, 97 ] */ map: typeof map; /** * Creates a BcsType that wraps another BcsType which is lazily evaluated. This is useful for creating recursive types. * @param cb A callback that returns the BcsType */ lazy<T extends BcsType<any>>(cb: () => T): T; }; export {};