Language: JavaScript
Label: safe
CWE: CWE-331 \u2014 Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Code:
    CryptoModule.prototype.getFileData = function (input) {
        if (input instanceof ArrayBuffer) {
            return input;
        }
        if (typeof input === 'string') {
            return CryptoModule.encoder.encode(input);
        }
        throw new Error('Cannot decrypt/encrypt file. In browsers file decryption supports only string or ArrayBuffer');
    };