Here is an article that explains the problem you encounter, noticing the error of the metamas function when you call reactjs: Metamask:
The selector’s metam function has not found a mistake
When developing decentralized applications (DAPP), interactions with contracts based on Ethereum using Web3 libraries, such as etters.js, are common. However, one of the common problems that may arise is “the function was not found” in the hardhat knot.
In this article, we immerse ourselves in what causes this error and how you can terminate it when you cause an intelligent contract with Reactjs with a metamask.
What is a metamask?
Metamask is an Ethereum wallet that allows users to interact with blockchain Ethereum. Provides user -friendly interface for private keys management, sending transactions and accessing various etree functions.
Choosing the function of nenou Opporter Errors in Hardhat knot
If you use the Hardhat node for compilation and implementation of intelligent contracts, Metamask must know which function selector should be used to interact with the contract. However, if this information is not provided or not incorrect, you will encounter the error “a function that has not been found”.
Here is an example of what can go wrong:
`Javascript
Import {Compile} with "hardhat-typescript";
Const Compiletract = Async (Contract, ABI) => {
to try {
Permanent contract = is waiting for compilation (contract name);
Const binascii = buffer.from (abi.map ((key)) => key.type) .boin (',')));
Const Selector = '0x' + binasci;
Console.log (selector); // It should be the correct voter of the functions
// Now call the contract with this selector
expect a contract.
} Catch (error) {
Console.error (error);
}
};
In this example, the “selector” is a hexadecim chain that represents Ethereum Byreum for “Gettodepositamount”. “AT ()Object "The contract returns a new contract with a specific selector. However, if you use an intelligent contract with the Metamask collection, for example, the "Sushiswap" agreement, it will have a different byte code.
What happens when using Metamascus?
There are several reasons why you can encounter a "function" error:
- Incorrect ABI
: If your intelligent agreement is incorrect or there is a lack of some functions, the metamask will not be able to determine the correct selection of the function.
- Metamask collection : When using an intelligent contract with the Metamask collection (e.g. Sushiswap), you need to specify the correct byte code as a "compilation".
- Hardhat configuration
: Your Hardhat project may not have the necessary configuration or dependence settings to compile and implement intelligent contracts correctly.
solution to the problem
To solve this error, make sure:
1
- The Metamask collection is set correctly and contains all the required functions (e.g. "Gettodepositamount).
- Your Hardhat project has the necessary addiction to configuration and settings.
Here is an updated example that uses the Sushiswap contract:
“ Javascript
Import {Compileltract} with “Hardhat-TypScript”;
Import “@nomiclabs/hardhat-Waffle”;
Const compile = async (contract, abi) => {
to try {
Permanent contract = is waiting for compilation (contract name);
Const binascii = buffer.from (abi.map ((key)) => key.type) .boin (‘,’)));
Const Selector = ‘0x’ + binasci;
// Now call the contract with this selector
Return to waiting for the contract. At (selector).
} Catch (error) {
console.
لا تعليق