@launchdarkly/react-native-client-sdk/dist/src/platform/crypto/PlatformHasher.js

React Native LaunchDarkly SDK

import { sha256 } from '../../fromExternal/js-sha256';
import { base64FromByteArray } from '../../polyfills';
export default class PlatformHasher {
    constructor(algorithm, hmacKey) {
        switch (algorithm) {
            case 'sha256':
                this._hasher = hmacKey ? sha256.hmac.create(hmacKey) : sha256.create();
                break;
            default:
                throw new Error(`Unsupported hash algorithm: ${algorithm}. Only sha256 is supported.`);
        }
    }
    digest(encoding) {
        switch (encoding) {
            case 'base64':
                return base64FromByteArray(new Uint8Array(this._hasher.arrayBuffer()));
            case 'hex':
                return this._hasher.hex();
            default:
                throw new Error(`unsupported output encoding: ${encoding}. Only base64 and hex are supported.`);
        }
    }
    update(data) {
        this._hasher.update(data);
        return this;
    }
}
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