29 lines
860 B
TypeScript
29 lines
860 B
TypeScript
// Copyright 2017-2021 @polkadot/react-components authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import { keyring } from '@polkadot/ui-keyring';
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import { assert, hexToU8a, isHex } from '@polkadot/util';
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import { ethereumEncode } from '@polkadot/util-crypto';
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export function toAddress (value?: string | Uint8Array | null, allowIndices = false): string | undefined {
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if (value) {
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try {
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const u8a = isHex(value)
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? hexToU8a(value)
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: keyring.decodeAddress(value);
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assert(allowIndices || u8a.length === 32 || u8a.length === 20, 'AccountIndex values not allowed');
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if (u8a.length === 20) {
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return ethereumEncode(u8a);
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} else {
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return keyring.encodeAddress(u8a);
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}
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} catch (error) {
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// noop, undefined return indicates invalid/transient
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}
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}
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return undefined;
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}
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