Jaco
49ab036894
* Split into common wasm-bridge package * README * Adjust rollup bundling * Adjust * Adjust * Adjust, full re-usable * Cleanup deps * Restore initWasm exports from init* * Split base64 & fflate into wasm-util * sideEffects for wasm-util * Dedupe types * Additional * Adjust * Expose error on InitResult * Bump deps * CHANGELOG * Re-usable rollup config
23 lines
615 B
TypeScript
23 lines
615 B
TypeScript
// Copyright 2019-2022 @polkadot/wasm-util authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
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export function base64Decode (data: string): Uint8Array {
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const bytes = [];
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let byte = 0;
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let bits = 0;
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for (let i = 0; i < data.length && data[i] !== '='; i++) {
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// each character represents 6 bits
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byte = (byte << 6) | chars.indexOf(data[i]);
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// each byte needs to contain 8 bits
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if ((bits += 6) >= 8) {
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bytes.push((byte >>> (bits -= 8)) & 0xff);
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}
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}
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return Uint8Array.from(bytes);
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}
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