move hex regexp to /utils/ethUtils

src/actions/SendFormActions.js

@@ -11,6 +11,7 @@ import * as ValidationActions from 'actions/SendFormValidationActions';
 import { initialState } from 'reducers/SendFormReducer';
 import { findToken } from 'reducers/TokensReducer';
 import * as reducerUtils from 'reducers/utils';
+import * as ethUtils from 'utils/ethUtils';
 
 import type {
     Dispatch,
@@ -397,8 +398,7 @@ const estimateGasPrice = (): AsyncAction => async (dispatch: Dispatch, getState:
     }
 
     const requestedData = state.data;
-    const re = /^(0x|0X)?[0-9A-Fa-f]+$/g;
-    if (!re.test(requestedData)) {
+    if (!ethUtils.isHex(requestedData)) {
         // stop "calculatingGasLimit" process
         dispatch(onGasLimitChange(requestedData.length > 0 ? state.gasLimit : network.defaultGasLimit.toString()));
         return;

src/actions/SendFormValidationActions.js

@@ -6,6 +6,7 @@ import EthereumjsUnits from 'ethereumjs-units';
 import { findToken } from 'reducers/TokensReducer';
 import { findDevice, getPendingAmount } from 'reducers/utils';
 import * as SEND from 'actions/constants/send';
+import * as ethUtils from 'utils/ethUtils';
 
 import type {
     Dispatch,
@@ -19,7 +20,6 @@ const NUMBER_RE: RegExp = new RegExp('^(0|0\\.([0-9]+)?|[1-9][0-9]*\\.?([0-9]+)?
 const UPPERCASE_RE = new RegExp('^(.*[A-Z].*)$');
 const ABS_RE = new RegExp('^[0-9]+$');
 const ETH_18_RE = new RegExp('^(0|0\\.([0-9]{0,18})?|[1-9][0-9]*\\.?([0-9]{0,18})?|\\.[0-9]{0,18})$');
-const HEX_RE = new RegExp('^(0x|0X)?[0-9A-Fa-f]+$');
 const dynamicRegexp = (decimals: number): RegExp => {
     if (decimals > 0) {
         return new RegExp(`^(0|0\\.([0-9]{0,${decimals}})?|[1-9][0-9]*\\.?([0-9]{0,${decimals}})?|\\.[0-9]{1,${decimals}})$`);
@@ -326,7 +326,7 @@ export const nonceValidation = ($state: State): PayloadAction<State> => (dispatc
 export const dataValidation = ($state: State): PayloadAction<State> => (): State => {
     const state = { ...$state };
     if (!state.touched.data || state.data.length === 0) return state;
-    if (!HEX_RE.test(state.data)) {
+    if (!ethUtils.isHex(state.data)) {
         state.errors.data = 'Data is not valid hexadecimal';
     }
     return state;

src/utils/ethUtils.js

@@ -39,4 +39,9 @@ export const validateAddress = (address: string): ?string => {
         return 'Address is not a valid checksum';
     }
     return null;
+};
+
+export const isHex = (str: string): boolean => {
+    const regExp = /^(0x|0X)?[0-9A-Fa-f]+$/g;
+    return regExp.test(str);
 };