61 lines
1.7 KiB
TypeScript
61 lines
1.7 KiB
TypeScript
import { Wei, toTokenBase } from 'libs/units';
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import { addHexPrefix } from 'ethereumjs-util';
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import { AppState } from 'reducers';
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export function stripHexPrefix(value: string) {
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return value.replace('0x', '');
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}
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export function stripHexPrefixAndLower(value: string): string {
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return stripHexPrefix(value).toLowerCase();
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}
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export function toHexWei(weiString: string): string {
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return addHexPrefix(Wei(weiString).toString(16));
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}
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export function padLeftEven(hex: string) {
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return hex.length % 2 !== 0 ? `0${hex}` : hex;
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}
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export function sanitizeHex(hex: string) {
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const hexStr = hex.substring(0, 2) === '0x' ? hex.substring(2) : hex;
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return hex !== '' ? `0x${padLeftEven(hexStr)}` : '';
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}
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export const buildEIP681EtherRequest = (
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recipientAddr: string,
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chainId: number,
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etherValue: AppState['transaction']['fields']['value']
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) => `ethereum:${recipientAddr}${chainId !== 1 ? `@${chainId}` : ''}?value=${etherValue.raw}e18`;
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export const buildEIP681TokenRequest = (
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recipientAddr: string,
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contractAddr: string,
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chainId: number,
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tokenValue: AppState['transaction']['meta']['tokenTo'],
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decimal: number,
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gasLimit: AppState['transaction']['fields']['gasLimit']
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) =>
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`ethereum:${contractAddr}${
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chainId !== 1 ? `@${chainId}` : ''
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}/transfer?address=${recipientAddr}&uint256=${toTokenBase(tokenValue.raw, decimal)}&gas=${
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gasLimit.raw
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}`;
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export const sanitizeNumericalInput = (input: string): string => {
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const inputFloat = parseFloat(input);
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if (!input || isNaN(inputFloat)) {
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return input;
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}
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// limit input field decrement to 0
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if (inputFloat === -1) {
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return '0';
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}
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// convert negative values to positive
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return Math.abs(inputFloat).toString();
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};
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