web3-eth-abi - npm Package Compare versions

Comparing version 4.3.1-dev.ed85cce.0 to 4.3.1-dev.efac906.0

lib/commonjs/api/functions_api.d.ts

@@ -1,2 +0,2 @@
-import { AbiFunctionFragment } from 'web3-types';
+import { AbiConstructorFragment, AbiFunctionFragment, DecodedParams, HexString } from 'web3-types';
 /**
@@ -93,1 +93,96 @@ * Encodes the function name to its ABI representation, which are the first 4 bytes of the sha3 of the function name including  types.
 export declare const encodeFunctionCall: (jsonInterface: AbiFunctionFragment, params: unknown[]) => string;
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param data - The data to decode
+ * @param methodSignatureProvided - (Optional) if `false` do not remove the first 4 bytes that would rather contain the function signature.
+ * @returns - The data decoded according to the passed ABI.
+ * @example
+ * ```ts
+ * const data =
+ * 	'0xa413686200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010416e6f74686572204772656574696e6700000000000000000000000000000000';
+ * const params = decodeFunctionCall(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' },
+ * 			{ internalType: 'string', name: '_second_greeting', type: 'string' },
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(params);
+ * > {
+ * > 	'0': 'Hello',
+ * > 	'1': 'Another Greeting',
+ * > 	__length__: 2,
+ * > 	__method__: 'setGreeting(string,string)',
+ * > 	_greeting: 'Hello',
+ * > 	_second_greeting: 'Another Greeting',
+ * > }
+ * ```
+ */
+export declare const decodeFunctionCall: (functionsAbi: AbiFunctionFragment | AbiConstructorFragment, data: HexString, methodSignatureProvided?: boolean) => DecodedParams & {
+    __method__: string;
+};
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @returns - The ABI encoded function call, which, means the function signature and the parameters passed.
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param returnValues - The data (the function-returned-values) to decoded
+ * @returns - The function-returned-values decoded according to the passed ABI. If there are multiple values, it returns them as an object as the example below. But if it is a single value, it returns it only for simplicity.
+ * @example
+ * ```ts
+ * // decode a multi-value data of a method
+ * const data =
+ * 	'0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > { '0': 'Hello', '1': true, __length__: 2 }
+ *
+ *
+ * // decode a single-value data of a method
+ * const data =
+ * 	'0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [{ internalType: 'string', name: '', type: 'string' }],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > 'Hello'
+ * ```
+ */
+export declare const decodeFunctionReturn: (functionsAbi: AbiFunctionFragment, returnValues?: HexString) => unknown;

lib/commonjs/api/functions_api.js

@@ -19,3 +19,3 @@ "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.encodeFunctionCall = exports.encodeFunctionSignature = void 0;
+exports.decodeFunctionReturn = exports.decodeFunctionCall = exports.encodeFunctionCall = exports.encodeFunctionSignature = void 0;
 /**
@@ -140,2 +140,126 @@ *
 exports.encodeFunctionCall = encodeFunctionCall;
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param data - The data to decode
+ * @param methodSignatureProvided - (Optional) if `false` do not remove the first 4 bytes that would rather contain the function signature.
+ * @returns - The data decoded according to the passed ABI.
+ * @example
+ * ```ts
+ * const data =
+ * 	'0xa413686200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010416e6f74686572204772656574696e6700000000000000000000000000000000';
+ * const params = decodeFunctionCall(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' },
+ * 			{ internalType: 'string', name: '_second_greeting', type: 'string' },
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(params);
+ * > {
+ * > 	'0': 'Hello',
+ * > 	'1': 'Another Greeting',
+ * > 	__length__: 2,
+ * > 	__method__: 'setGreeting(string,string)',
+ * > 	_greeting: 'Hello',
+ * > 	_second_greeting: 'Another Greeting',
+ * > }
+ * ```
+ */
+const decodeFunctionCall = (functionsAbi, data, methodSignatureProvided = true) => {
+    const value = methodSignatureProvided && data && data.length >= 10 && data.startsWith('0x')
+        ? data.slice(10)
+        : data;
+    if (!functionsAbi.inputs) {
+        throw new web3_errors_1.Web3ContractError('No inputs found in the ABI');
+    }
+    const result = (0, parameters_api_js_1.decodeParameters)([...functionsAbi.inputs], value);
+    return Object.assign(Object.assign({}, result), { __method__: (0, utils_js_1.jsonInterfaceMethodToString)(functionsAbi) });
+};
+exports.decodeFunctionCall = decodeFunctionCall;
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @returns - The ABI encoded function call, which, means the function signature and the parameters passed.
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param returnValues - The data (the function-returned-values) to decoded
+ * @returns - The function-returned-values decoded according to the passed ABI. If there are multiple values, it returns them as an object as the example below. But if it is a single value, it returns it only for simplicity.
+ * @example
+ * ```ts
+ * // decode a multi-value data of a method
+ * const data =
+ * 	'0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > { '0': 'Hello', '1': true, __length__: 2 }
+ *
+ *
+ * // decode a single-value data of a method
+ * const data =
+ * 	'0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [{ internalType: 'string', name: '', type: 'string' }],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > 'Hello'
+ * ```
+ */
+const decodeFunctionReturn = (functionsAbi, returnValues) => {
+    // If it is a constructor there is nothing to decode!
+    if (functionsAbi.type === 'constructor') {
+        return returnValues;
+    }
+    if (!returnValues) {
+        // Using "null" value intentionally to match legacy behavior
+        // eslint-disable-next-line no-null/no-null
+        return null;
+    }
+    const value = returnValues.length >= 2 ? returnValues.slice(2) : returnValues;
+    if (!functionsAbi.outputs) {
+        // eslint-disable-next-line no-null/no-null
+        return null;
+    }
+    const result = (0, parameters_api_js_1.decodeParameters)([...functionsAbi.outputs], value);
+    if (result.__length__ === 1) {
+        return result[0];
+    }
+    return result;
+};
+exports.decodeFunctionReturn = decodeFunctionReturn;
 //# sourceMappingURL=functions_api.js.map

lib/esm/api/functions_api.js

@@ -21,6 +21,6 @@ /*
  */
-import { AbiError } from 'web3-errors';
+import { AbiError, Web3ContractError } from 'web3-errors';
 import { sha3Raw } from 'web3-utils';
 import { isAbiFunctionFragment, jsonInterfaceMethodToString } from '../utils.js';
-import { encodeParameters } from './parameters_api.js';
+import { decodeParameters, encodeParameters } from './parameters_api.js';
 /**
@@ -135,2 +135,124 @@ * Encodes the function name to its ABI representation, which are the first 4 bytes of the sha3 of the function name including  types.
 };
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param data - The data to decode
+ * @param methodSignatureProvided - (Optional) if `false` do not remove the first 4 bytes that would rather contain the function signature.
+ * @returns - The data decoded according to the passed ABI.
+ * @example
+ * ```ts
+ * const data =
+ * 	'0xa413686200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010416e6f74686572204772656574696e6700000000000000000000000000000000';
+ * const params = decodeFunctionCall(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' },
+ * 			{ internalType: 'string', name: '_second_greeting', type: 'string' },
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(params);
+ * > {
+ * > 	'0': 'Hello',
+ * > 	'1': 'Another Greeting',
+ * > 	__length__: 2,
+ * > 	__method__: 'setGreeting(string,string)',
+ * > 	_greeting: 'Hello',
+ * > 	_second_greeting: 'Another Greeting',
+ * > }
+ * ```
+ */
+export const decodeFunctionCall = (functionsAbi, data, methodSignatureProvided = true) => {
+    const value = methodSignatureProvided && data && data.length >= 10 && data.startsWith('0x')
+        ? data.slice(10)
+        : data;
+    if (!functionsAbi.inputs) {
+        throw new Web3ContractError('No inputs found in the ABI');
+    }
+    const result = decodeParameters([...functionsAbi.inputs], value);
+    return Object.assign(Object.assign({}, result), { __method__: jsonInterfaceMethodToString(functionsAbi) });
+};
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @returns - The ABI encoded function call, which, means the function signature and the parameters passed.
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param returnValues - The data (the function-returned-values) to decoded
+ * @returns - The function-returned-values decoded according to the passed ABI. If there are multiple values, it returns them as an object as the example below. But if it is a single value, it returns it only for simplicity.
+ * @example
+ * ```ts
+ * // decode a multi-value data of a method
+ * const data =
+ * 	'0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > { '0': 'Hello', '1': true, __length__: 2 }
+ *
+ *
+ * // decode a single-value data of a method
+ * const data =
+ * 	'0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [{ internalType: 'string', name: '', type: 'string' }],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > 'Hello'
+ * ```
+ */
+export const decodeFunctionReturn = (functionsAbi, returnValues) => {
+    // If it is a constructor there is nothing to decode!
+    if (functionsAbi.type === 'constructor') {
+        return returnValues;
+    }
+    if (!returnValues) {
+        // Using "null" value intentionally to match legacy behavior
+        // eslint-disable-next-line no-null/no-null
+        return null;
+    }
+    const value = returnValues.length >= 2 ? returnValues.slice(2) : returnValues;
+    if (!functionsAbi.outputs) {
+        // eslint-disable-next-line no-null/no-null
+        return null;
+    }
+    const result = decodeParameters([...functionsAbi.outputs], value);
+    if (result.__length__ === 1) {
+        return result[0];
+    }
+    return result;
+};
 //# sourceMappingURL=functions_api.js.map

lib/types/api/functions_api.d.ts

@@ -1,2 +0,2 @@
-import { AbiFunctionFragment } from 'web3-types';
+import { AbiConstructorFragment, AbiFunctionFragment, DecodedParams, HexString } from 'web3-types';
 /**
@@ -93,2 +93,97 @@ * Encodes the function name to its ABI representation, which are the first 4 bytes of the sha3 of the function name including  types.
 export declare const encodeFunctionCall: (jsonInterface: AbiFunctionFragment, params: unknown[]) => string;
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param data - The data to decode
+ * @param methodSignatureProvided - (Optional) if `false` do not remove the first 4 bytes that would rather contain the function signature.
+ * @returns - The data decoded according to the passed ABI.
+ * @example
+ * ```ts
+ * const data =
+ * 	'0xa413686200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010416e6f74686572204772656574696e6700000000000000000000000000000000';
+ * const params = decodeFunctionCall(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' },
+ * 			{ internalType: 'string', name: '_second_greeting', type: 'string' },
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(params);
+ * > {
+ * > 	'0': 'Hello',
+ * > 	'1': 'Another Greeting',
+ * > 	__length__: 2,
+ * > 	__method__: 'setGreeting(string,string)',
+ * > 	_greeting: 'Hello',
+ * > 	_second_greeting: 'Another Greeting',
+ * > }
+ * ```
+ */
+export declare const decodeFunctionCall: (functionsAbi: AbiFunctionFragment | AbiConstructorFragment, data: HexString, methodSignatureProvided?: boolean) => DecodedParams & {
+    __method__: string;
+};
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @returns - The ABI encoded function call, which, means the function signature and the parameters passed.
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param returnValues - The data (the function-returned-values) to decoded
+ * @returns - The function-returned-values decoded according to the passed ABI. If there are multiple values, it returns them as an object as the example below. But if it is a single value, it returns it only for simplicity.
+ * @example
+ * ```ts
+ * // decode a multi-value data of a method
+ * const data =
+ * 	'0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > { '0': 'Hello', '1': true, __length__: 2 }
+ *
+ *
+ * // decode a single-value data of a method
+ * const data =
+ * 	'0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [{ internalType: 'string', name: '', type: 'string' }],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > 'Hello'
+ * ```
+ */
+export declare const decodeFunctionReturn: (functionsAbi: AbiFunctionFragment, returnValues?: HexString) => unknown;
 //# sourceMappingURL=functions_api.d.ts.map

package.json

 {
 	"name": "web3-eth-abi",
-	"version": "4.3.1-dev.ed85cce.0+ed85cce",
+	"version": "4.3.1-dev.efac906.0+efac906",
 	"description": "Web3 module encode and decode EVM in/output.",
@@ -46,6 +46,6 @@ "main": "./lib/commonjs/index.js",
 		"abitype": "0.7.1",
-		"web3-errors": "1.3.1-dev.ed85cce.0+ed85cce",
-		"web3-types": "1.8.2-dev.ed85cce.0+ed85cce",
-		"web3-utils": "4.3.3-dev.ed85cce.0+ed85cce",
-		"web3-validator": "2.0.7-dev.ed85cce.0+ed85cce"
+		"web3-errors": "1.3.1-dev.efac906.0+efac906",
+		"web3-types": "1.8.2-dev.efac906.0+efac906",
+		"web3-utils": "4.3.3-dev.efac906.0+efac906",
+		"web3-validator": "2.0.7-dev.efac906.0+efac906"
 	},
@@ -69,3 +69,3 @@ "devDependencies": {
 	},
-	"gitHead": "ed85ccecadc97cbacd0ee00dfb1a2ee7497347b8"
+	"gitHead": "efac906a9fdcfda895aaf602c458d574645bc549"
 }

src/api/functions_api.ts

@@ -22,7 +22,7 @@ /*
  */
-import { AbiError } from 'web3-errors';
+import { AbiError, Web3ContractError } from 'web3-errors';
 import { sha3Raw } from 'web3-utils';
-import { AbiFunctionFragment } from 'web3-types';
+import { AbiConstructorFragment, AbiFunctionFragment, DecodedParams, HexString } from 'web3-types';
 import { isAbiFunctionFragment, jsonInterfaceMethodToString } from '../utils.js';
-import { encodeParameters } from './parameters_api.js';
+import { decodeParameters, encodeParameters } from './parameters_api.js';
 
@@ -147,1 +147,140 @@ /**
 };
+
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param data - The data to decode
+ * @param methodSignatureProvided - (Optional) if `false` do not remove the first 4 bytes that would rather contain the function signature.
+ * @returns - The data decoded according to the passed ABI.
+ * @example
+ * ```ts
+ * const data =
+ * 	'0xa413686200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010416e6f74686572204772656574696e6700000000000000000000000000000000';
+ * const params = decodeFunctionCall(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' },
+ * 			{ internalType: 'string', name: '_second_greeting', type: 'string' },
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(params);
+ * > {
+ * > 	'0': 'Hello',
+ * > 	'1': 'Another Greeting',
+ * > 	__length__: 2,
+ * > 	__method__: 'setGreeting(string,string)',
+ * > 	_greeting: 'Hello',
+ * > 	_second_greeting: 'Another Greeting',
+ * > }
+ * ```
+ */
+export const decodeFunctionCall = (
+	functionsAbi: AbiFunctionFragment | AbiConstructorFragment,
+	data: HexString,
+	methodSignatureProvided = true,
+): DecodedParams & { __method__: string } => {
+	const value =
+		methodSignatureProvided && data && data.length >= 10 && data.startsWith('0x')
+			? data.slice(10)
+			: data;
+	if (!functionsAbi.inputs) {
+		throw new Web3ContractError('No inputs found in the ABI');
+	}
+	const result = decodeParameters([...functionsAbi.inputs], value);
+	return {
+		...result,
+		__method__: jsonInterfaceMethodToString(functionsAbi),
+	};
+};
+
+/**
+ * Decodes a function call data using its `JSON interface` object.
+ * The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json
+ * @returns - The ABI encoded function call, which, means the function signature and the parameters passed.
+ * @param functionsAbi - The `JSON interface` object of the function.
+ * @param returnValues - The data (the function-returned-values) to decoded
+ * @returns - The function-returned-values decoded according to the passed ABI. If there are multiple values, it returns them as an object as the example below. But if it is a single value, it returns it only for simplicity.
+ * @example
+ * ```ts
+ * // decode a multi-value data of a method
+ * const data =
+ * 	'0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [
+ * 			{ internalType: 'string', name: '', type: 'string' },
+ * 			{ internalType: 'bool', name: '', type: 'bool' },
+ * 		],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > { '0': 'Hello', '1': true, __length__: 2 }
+ * 
+ * 
+ * // decode a single-value data of a method
+ * const data =
+ * 	'0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
+ * const decodedResult = decodeFunctionReturn(
+ * 	{
+ * 		inputs: [
+ * 			{ internalType: 'string', name: '_greeting', type: 'string' }
+ * 		],
+ * 		name: 'setGreeting',
+ * 		outputs: [{ internalType: 'string', name: '', type: 'string' }],
+ * 		stateMutability: 'nonpayable',
+ * 		type: 'function',
+ * 	},
+ * 	data,
+ * );
+
+ * console.log(decodedResult);
+ * > 'Hello'
+ * ```
+ */
+export const decodeFunctionReturn = (
+	functionsAbi: AbiFunctionFragment,
+	returnValues?: HexString,
+) => {
+	// If it is a constructor there is nothing to decode!
+	if (functionsAbi.type === 'constructor') {
+		return returnValues;
+	}
+
+	if (!returnValues) {
+		// Using "null" value intentionally to match legacy behavior
+		// eslint-disable-next-line no-null/no-null
+		return null;
+	}
+
+	const value = returnValues.length >= 2 ? returnValues.slice(2) : returnValues;
+	if (!functionsAbi.outputs) {
+		// eslint-disable-next-line no-null/no-null
+		return null;
+	}
+	const result = decodeParameters([...functionsAbi.outputs], value);
+
+	if (result.__length__ === 1) {
+		return result[0];
+	}
+
+	return result;
+};

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