Synchronous file shredder.

const Shredder = require('@kxghnpm/kx-shredder-sync');
const shr = Shredder.createShredder({
    strategy: Shredder.strategies.ZERO_BYTES
});
shr.shredAll(`my/target/folder`, {recursive: true, unlink: false});

const Shredder = require('@kxghnpm/kx-shredder-sync');
const shr = Shredder.createShredder({
    strategy: Shredder.strategies.FF_BYTES
});
shr.shredAll(['tests/xxx.txt', 'tests/xxf/xxx.txt'], {unlink: true});

const shr = require('@kxghnpm/kx-shredder-sync').createShredder();
shr.shredOne('mycv.pdf');

const Shredder = require('@kxghnpm/kx-shredder-sync');
const shr = Shredder.createShredder({
    /// ... opts ...
    strategy: Shredder.strategies.US_DOD,
    log: console.log,
    passCount: 2
});

File shredding strategies. If none provided, falls back to US_DOD. Four available:

• ZERO_BYTES fills file with zeros
• FF_BYTES fills file with max byte values
• RANDOM_BYTES fills file with random bytes
• US_DOD all of the previous three as one pass (in that order).

Accepts the following params:

• fileLister filelister with a listFiles(targetDirectoryPath, recursive) method. It recursively searches for files to be shredded. Default used filelister is @kxghnpm/kx-file-lister-sync with the following blacklist of file extensions: ['.exe', '.dll', '.so', '.dat', '.xml', '.js', '.log', '.o', '.efi', '.prx', '.sh', '.rs', '.bat']
• bufferSize write buffer chunk size in bytes. Defaults to 65536
• strategy see strategies above. Defaults to US_DOD
• log logger function that will be passed a string indicating progress of mass shredding. Defaults to empty function.
• passCount how many times should shredding strategy be used on a file. Suggested and default value is 1.

Returns an object with following functions:

Synchronously shreds a file. Args:

• targetFilePath path to file to be shredded
• unlink whether the file should also be unlinked. False by default.

Synchronously shreds files in (sub)folder(s) or file paths listed in array.

• target directory path or array of file paths
• opts.recursive whether also files in subdirectories should be shredded. Defaults to false
• opts.unlink whether the files should also be unlinked. False by default

Lists targets that would be shredded by shredAll function. Useful for prompting user before shredding recursively.

• target target path to target directory or array of file paths
• recursive whether also subdirectories should be shredded. Defaults to false