Method decodeFunctionData

src.ts/abi/interface.ts:857–868

* Decodes the %%data%% from a transaction ``tx.data`` for * the function specified (see [[getFunction]] for valid values * for %%fragment%%). * * Most developers should prefer the [[parseTransaction]] method * instead, which will automatically detect the fragment.

(fragment: FunctionFragment | string, data: BytesLike)

     *  instead, which will automatically detect the fragment.
     */
    decodeFunctionData(fragment: FunctionFragment | string, data: BytesLike): Result {
        if (typeof(fragment) === "string") {
            const f = this.getFunction(fragment);
            assertArgument(f, "unknown function", "fragment", fragment);
            fragment = f;
        }

        assertArgument(dataSlice(data, 0, 4) === fragment.selector,
            `data signature does not match function ${ fragment.name }.`, "data", data);

        return this._decodeParams(fragment.inputs, dataSlice(data, 4));
    }

    /**
     *  Encodes the ``tx.data`` for a transaction that calls the function