> ## Documentation Index > Fetch the complete documentation index at: https://voltaire.tevm.sh/llms.txt > Use this file to discover all available pages before exploring further. # primitives/MultiTokenId > Auto-generated API documentation [**@tevm/voltaire**](../index.mdx) *** [@tevm/voltaire](../index.mdx) / primitives/MultiTokenId # primitives/MultiTokenId ## Classes ### InvalidMultiTokenIdError Defined in: [src/primitives/MultiTokenId/errors.ts:23](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/errors.ts#L23) Base validation error #### Example ```typescript theme={null} throw new ValidationError('Invalid value', { value: '0x123', expected: '20 bytes', code: 'VALIDATION_ERROR', docsPath: '/primitives/address/from-hex#error-handling', cause: originalError }) ``` #### Extends * [`ValidationError`](../index/index.mdx#validationerror) #### Constructors ##### Constructor > **new InvalidMultiTokenIdError**(`message`, `options?`): [`InvalidMultiTokenIdError`](#invalidmultitokeniderror) Defined in: [src/primitives/MultiTokenId/errors.ts:24](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/errors.ts#L24) ###### Parameters ###### message `string` ###### options? ###### cause? `Error` ###### code? `string` ###### context? `Record`\<`string`, `unknown`> ###### docsPath? `string` ###### expected? `string` ###### value? `unknown` ###### Returns [`InvalidMultiTokenIdError`](#invalidmultitokeniderror) ###### Overrides [`ValidationError`](../index/index.mdx#validationerror).[`constructor`](../index/index.mdx#constructor-20) #### Properties ##### cause? > `optional` **cause**: `Error` Defined in: [src/primitives/errors/AbstractError.ts:56](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L56) Root cause of this error (for error chaining) ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`cause`](../index/index.mdx#cause-19) ##### code > **code**: `string` Defined in: [src/primitives/errors/AbstractError.ts:39](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L39) Machine-readable error code for programmatic handling ###### Example ```ts theme={null} 'INVALID_FORMAT', 'INVALID_LENGTH' ``` ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`code`](../index/index.mdx#code-19) ##### context? > `optional` **context**: `Record`\<`string`, `unknown`> Defined in: [src/primitives/errors/AbstractError.ts:45](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L45) Additional context metadata for debugging ###### Example ```ts theme={null} { value: '0x123', expected: '20 bytes' } ``` ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`context`](../index/index.mdx#context-19) ##### docsPath? > `optional` **docsPath**: `string` Defined in: [src/primitives/errors/AbstractError.ts:51](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L51) Path to documentation for this error ###### Example ```ts theme={null} '/primitives/address/from-hex#error-handling' ``` ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`docsPath`](../index/index.mdx#docspath-19) ##### expected > **expected**: `string` Defined in: [src/primitives/errors/ValidationError.ts:19](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/ValidationError.ts#L19) ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`expected`](../index/index.mdx#expected-7) ##### value > **value**: `unknown` Defined in: [src/primitives/errors/ValidationError.ts:18](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/ValidationError.ts#L18) ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`value`](../index/index.mdx#value-7) #### Methods ##### getErrorChain() > **getErrorChain**(): `string` Defined in: [src/primitives/errors/AbstractError.ts:94](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L94) Get full error chain as string for logging ###### Returns `string` ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`getErrorChain`](../index/index.mdx#geterrorchain-38) ##### toJSON() > **toJSON**(): `Record`\<`string`, `unknown`> Defined in: [src/primitives/errors/AbstractError.ts:110](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L110) Serialize error to JSON for logging/telemetry ###### Returns `Record`\<`string`, `unknown`> ###### Inherited from [`ValidationError`](../index/index.mdx#validationerror).[`toJSON`](../index/index.mdx#tojson-38) *** ### MultiTokenIdError Defined in: [src/primitives/MultiTokenId/errors.ts:3](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/errors.ts#L3) Base error for all primitive-related errors #### Example ```typescript theme={null} throw new PrimitiveError('Invalid primitive value', { code: 'INVALID_PRIMITIVE', context: { value: '0x123' }, docsPath: '/primitives/overview#errors' }) ``` #### Extends * [`PrimitiveError`](../index/index.mdx#primitiveerror) #### Constructors ##### Constructor > **new MultiTokenIdError**(`message`, `options?`): [`MultiTokenIdError`](#multitokeniderror) Defined in: [src/primitives/MultiTokenId/errors.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/errors.ts#L4) ###### Parameters ###### message `string` ###### options? ###### cause? `Error` ###### code? `string` ###### context? `Record`\<`string`, `unknown`> ###### docsPath? `string` ###### Returns [`MultiTokenIdError`](#multitokeniderror) ###### Overrides [`PrimitiveError`](../index/index.mdx#primitiveerror).[`constructor`](../index/index.mdx#constructor-16) #### Properties ##### cause? > `optional` **cause**: `Error` Defined in: [src/primitives/errors/AbstractError.ts:56](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L56) Root cause of this error (for error chaining) ###### Inherited from [`PrimitiveError`](../index/index.mdx#primitiveerror).[`cause`](../index/index.mdx#cause-16) ##### code > **code**: `string` Defined in: [src/primitives/errors/AbstractError.ts:39](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L39) Machine-readable error code for programmatic handling ###### Example ```ts theme={null} 'INVALID_FORMAT', 'INVALID_LENGTH' ``` ###### Inherited from [`PrimitiveError`](../index/index.mdx#primitiveerror).[`code`](../index/index.mdx#code-16) ##### context? > `optional` **context**: `Record`\<`string`, `unknown`> Defined in: [src/primitives/errors/AbstractError.ts:45](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L45) Additional context metadata for debugging ###### Example ```ts theme={null} { value: '0x123', expected: '20 bytes' } ``` ###### Inherited from [`PrimitiveError`](../index/index.mdx#primitiveerror).[`context`](../index/index.mdx#context-16) ##### docsPath? > `optional` **docsPath**: `string` Defined in: [src/primitives/errors/AbstractError.ts:51](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L51) Path to documentation for this error ###### Example ```ts theme={null} '/primitives/address/from-hex#error-handling' ``` ###### Inherited from [`PrimitiveError`](../index/index.mdx#primitiveerror).[`docsPath`](../index/index.mdx#docspath-16) #### Methods ##### getErrorChain() > **getErrorChain**(): `string` Defined in: [src/primitives/errors/AbstractError.ts:94](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L94) Get full error chain as string for logging ###### Returns `string` ###### Inherited from [`PrimitiveError`](../index/index.mdx#primitiveerror).[`getErrorChain`](../index/index.mdx#geterrorchain-32) ##### toJSON() > **toJSON**(): `Record`\<`string`, `unknown`> Defined in: [src/primitives/errors/AbstractError.ts:110](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/errors/AbstractError.ts#L110) Serialize error to JSON for logging/telemetry ###### Returns `Record`\<`string`, `unknown`> ###### Inherited from [`PrimitiveError`](../index/index.mdx#primitiveerror).[`toJSON`](../index/index.mdx#tojson-32) ## Type Aliases ### MultiTokenIdType > **MultiTokenIdType** = `bigint` & `object` Defined in: [src/primitives/MultiTokenId/MultiTokenIdType.ts:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/MultiTokenIdType.ts#L10) MultiTokenId type - ERC-1155 token type identifier #### Type Declaration ##### \[brand] > `readonly` **\[brand]**: `"MultiTokenId"` #### See * [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation * [https://eips.ethereum.org/EIPS/eip-1155](https://eips.ethereum.org/EIPS/eip-1155) for ERC-1155 specification #### Since 0.0.0 ## Variables ### compare() > `const` **compare**: (`a`, `b`) => `number` = `_compare` Defined in: [src/primitives/MultiTokenId/index.ts:32](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L32) Compare two MultiTokenId values #### Parameters ##### a [`MultiTokenIdType`](#multitokenidtype) First MultiTokenId ##### b [`MultiTokenIdType`](#multitokenidtype) Second MultiTokenId #### Returns `number` -1 if a \< b, 0 if a === b, 1 if a > b #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const a = MultiTokenId.from(1n); const b = MultiTokenId.from(100n); const result = MultiTokenId.compare(a, b); // -1 ``` *** ### constants > `const` **constants**: `object` Defined in: [src/primitives/MultiTokenId/index.ts:37](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L37) #### Type Declaration ##### FUNGIBLE\_THRESHOLD > **FUNGIBLE\_THRESHOLD**: `bigint` Fungible token threshold (by convention) Token IDs below this are often fungible (like ERC-20) Token IDs at or above are often non-fungible (like ERC-721) ##### MAX > **MAX**: `bigint` Maximum MultiTokenId value (2^256 - 1) ##### MIN > **MIN**: `bigint` Minimum MultiTokenId value (0) *** ### equals() > `const` **equals**: (`a`, `b`) => `boolean` = `_equals` Defined in: [src/primitives/MultiTokenId/index.ts:31](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L31) Check if two MultiTokenId values are equal #### Parameters ##### a [`MultiTokenIdType`](#multitokenidtype) First MultiTokenId ##### b [`MultiTokenIdType`](#multitokenidtype) Second MultiTokenId #### Returns `boolean` true if equal #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const a = MultiTokenId.from(1n); const b = MultiTokenId.from(1n); const result = MultiTokenId.equals(a, b); // true ``` *** ### ERC1155\_SELECTORS > `const` **ERC1155\_SELECTORS**: `object` Defined in: [src/primitives/MultiTokenId/index.ts:44](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L44) #### Type Declaration ##### balanceOf > `readonly` **balanceOf**: `"0x00fdd58e"` = `"0x00fdd58e"` ##### balanceOfBatch > `readonly` **balanceOfBatch**: `"0x4e1273f4"` = `"0x4e1273f4"` ##### isApprovedForAll > `readonly` **isApprovedForAll**: `"0xe985e9c5"` = `"0xe985e9c5"` ##### safeBatchTransferFrom > `readonly` **safeBatchTransferFrom**: `"0x2eb2c2d6"` = `"0x2eb2c2d6"` ##### safeTransferFrom > `readonly` **safeTransferFrom**: `"0xf242432a"` = `"0xf242432a"` ##### setApprovalForAll > `readonly` **setApprovalForAll**: `"0xa22cb465"` = `"0xa22cb465"` ##### uri > `readonly` **uri**: `"0x0e89341c"` = `"0x0e89341c"` *** ### from() > `const` **from**: (`value`) => [`MultiTokenIdType`](#multitokenidtype) = `_from` Defined in: [src/primitives/MultiTokenId/index.ts:27](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L27) Create MultiTokenId from bigint, number, or string #### Parameters ##### value bigint, number, or decimal/hex string `string` | `number` | `bigint` #### Returns [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Throws If value is out of range or invalid #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); // Fungible token type const nftId = MultiTokenId.from(2n ** 128n); // Non-fungible token type const fromHex = MultiTokenId.from("0xff"); ``` *** ### isValidFungible() > `const` **isValidFungible**: (`tokenId`) => `boolean` = `_isValidFungible` Defined in: [src/primitives/MultiTokenId/index.ts:33](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L33) Check if MultiTokenId is valid for fungible tokens (below threshold) #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to check #### Returns `boolean` true if likely fungible (below 2^128) #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const fungible = MultiTokenId.from(1n); const isFungible = MultiTokenId.isValidFungible(fungible); // true const nonFungible = MultiTokenId.from(2n ** 128n); const notFungible = MultiTokenId.isValidFungible(nonFungible); // false ``` *** ### isValidNonFungible() > `const` **isValidNonFungible**: (`tokenId`) => `boolean` = `_isValidNonFungible` Defined in: [src/primitives/MultiTokenId/index.ts:34](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L34) Check if MultiTokenId is valid for non-fungible tokens (at or above threshold) #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to check #### Returns `boolean` true if likely non-fungible (>= 2^128) #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const nonFungible = MultiTokenId.from(2n ** 128n); const isNFT = MultiTokenId.isValidNonFungible(nonFungible); // true const fungible = MultiTokenId.from(1n); const notNFT = MultiTokenId.isValidNonFungible(fungible); // false ``` *** ### toBigInt() > `const` **toBigInt**: (`tokenId`) => `bigint` = `_toBigInt` Defined in: [src/primitives/MultiTokenId/index.ts:29](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L29) Convert MultiTokenId to bigint #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to convert #### Returns `bigint` bigint value #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); const bigint = MultiTokenId.toBigInt(tokenId); // 1n ``` *** ### toHex() > `const` **toHex**: (`tokenId`) => `string` = `_toHex` Defined in: [src/primitives/MultiTokenId/index.ts:30](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L30) Convert MultiTokenId to hex string #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to convert #### Returns `string` Hex string with 0x prefix #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); const hex = MultiTokenId.toHex(tokenId); // "0x1" ``` *** ### toNumber() > `const` **toNumber**: (`tokenId`) => `number` = `_toNumber` Defined in: [src/primitives/MultiTokenId/index.ts:28](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/index.ts#L28) Convert MultiTokenId to number (unsafe for large values) #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to convert #### Returns `number` number value #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Throws If value exceeds Number.MAX\_SAFE\_INTEGER #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); const num = MultiTokenId.toNumber(tokenId); // 1 ``` ## Functions ### \_compare() > **\_compare**(`a`, `b`): `number` Defined in: [src/primitives/MultiTokenId/compare.js:17](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/compare.js#L17) Compare two MultiTokenId values #### Parameters ##### a [`MultiTokenIdType`](#multitokenidtype) First MultiTokenId ##### b [`MultiTokenIdType`](#multitokenidtype) Second MultiTokenId #### Returns `number` -1 if a \< b, 0 if a === b, 1 if a > b #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const a = MultiTokenId.from(1n); const b = MultiTokenId.from(100n); const result = MultiTokenId.compare(a, b); // -1 ``` *** ### \_equals() > **\_equals**(`a`, `b`): `boolean` Defined in: [src/primitives/MultiTokenId/equals.js:17](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/equals.js#L17) Check if two MultiTokenId values are equal #### Parameters ##### a [`MultiTokenIdType`](#multitokenidtype) First MultiTokenId ##### b [`MultiTokenIdType`](#multitokenidtype) Second MultiTokenId #### Returns `boolean` true if equal #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const a = MultiTokenId.from(1n); const b = MultiTokenId.from(1n); const result = MultiTokenId.equals(a, b); // true ``` *** ### \_from() > **\_from**(`value`): [`MultiTokenIdType`](#multitokenidtype) Defined in: [src/primitives/MultiTokenId/from.js:20](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/from.js#L20) Create MultiTokenId from bigint, number, or string #### Parameters ##### value bigint, number, or decimal/hex string `string` | `number` | `bigint` #### Returns [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Throws If value is out of range or invalid #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); // Fungible token type const nftId = MultiTokenId.from(2n ** 128n); // Non-fungible token type const fromHex = MultiTokenId.from("0xff"); ``` *** ### \_isValidFungible() > **\_isValidFungible**(`tokenId`): `boolean` Defined in: [src/primitives/MultiTokenId/isValidFungible.js:19](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/isValidFungible.js#L19) Check if MultiTokenId is valid for fungible tokens (below threshold) #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to check #### Returns `boolean` true if likely fungible (below 2^128) #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const fungible = MultiTokenId.from(1n); const isFungible = MultiTokenId.isValidFungible(fungible); // true const nonFungible = MultiTokenId.from(2n ** 128n); const notFungible = MultiTokenId.isValidFungible(nonFungible); // false ``` *** ### \_isValidNonFungible() > **\_isValidNonFungible**(`tokenId`): `boolean` Defined in: [src/primitives/MultiTokenId/isValidNonFungible.js:19](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/isValidNonFungible.js#L19) Check if MultiTokenId is valid for non-fungible tokens (at or above threshold) #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to check #### Returns `boolean` true if likely non-fungible (>= 2^128) #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const nonFungible = MultiTokenId.from(2n ** 128n); const isNFT = MultiTokenId.isValidNonFungible(nonFungible); // true const fungible = MultiTokenId.from(1n); const notNFT = MultiTokenId.isValidNonFungible(fungible); // false ``` *** ### \_toBigInt() > **\_toBigInt**(`tokenId`): `bigint` Defined in: [src/primitives/MultiTokenId/toBigInt.js:15](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/toBigInt.js#L15) Convert MultiTokenId to bigint #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to convert #### Returns `bigint` bigint value #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); const bigint = MultiTokenId.toBigInt(tokenId); // 1n ``` *** ### \_toHex() > **\_toHex**(`tokenId`): `string` Defined in: [src/primitives/MultiTokenId/toHex.js:15](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/toHex.js#L15) Convert MultiTokenId to hex string #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to convert #### Returns `string` Hex string with 0x prefix #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); const hex = MultiTokenId.toHex(tokenId); // "0x1" ``` *** ### \_toNumber() > **\_toNumber**(`tokenId`): `number` Defined in: [src/primitives/MultiTokenId/toNumber.js:16](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/MultiTokenId/toNumber.js#L16) Convert MultiTokenId to number (unsafe for large values) #### Parameters ##### tokenId [`MultiTokenIdType`](#multitokenidtype) MultiTokenId value to convert #### Returns `number` number value #### See [https://voltaire.tevm.sh/primitives/multi-token-id](https://voltaire.tevm.sh/primitives/multi-token-id) for MultiTokenId documentation #### Since 0.0.0 #### Throws If value exceeds Number.MAX\_SAFE\_INTEGER #### Example ```javascript theme={null} import * as MultiTokenId from './primitives/MultiTokenId/index.js'; const tokenId = MultiTokenId.from(1n); const num = MultiTokenId.toNumber(tokenId); // 1 ```