viem/_esm/utils/abi/encodeFunctionData.js

TypeScript Interface for Ethereum

import { AbiFunctionNotFoundError, } from '../../errors/abi.js';
import { concatHex } from '../data/concat.js';
import { getFunctionSelector, } from '../hash/getFunctionSelector.js';
import { encodeAbiParameters, } from './encodeAbiParameters.js';
import { formatAbiItem } from './formatAbiItem.js';
import { getAbiItem } from './getAbiItem.js';
const docsPath = '/docs/contract/encodeFunctionData';
export function encodeFunctionData(parameters) {
    const { abi, args, functionName } = parameters;
    let abiItem = abi[0];
    if (functionName) {
        const item = getAbiItem({
            abi,
            args,
            name: functionName,
        });
        if (!item)
            throw new AbiFunctionNotFoundError(functionName, { docsPath });
        abiItem = item;
    }
    if (abiItem.type !== 'function')
        throw new AbiFunctionNotFoundError(undefined, { docsPath });
    const definition = formatAbiItem(abiItem);
    const signature = getFunctionSelector(definition);
    const data = 'inputs' in abiItem && abiItem.inputs
        ? encodeAbiParameters(abiItem.inputs, args ?? [])
        : undefined;
    return concatHex([signature, data ?? '0x']);
}
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