Hash-sum file (grunt-dirsum)

grunt-dirsum.js

const fs = require('fs'),
	dirsum = require('dirsum')
;

module.exports = function (grunt) {
	grunt.registerMultiTask('hash', 'Hash-sum file.', function () {
		const done = this.async();

		var options = this.options({
			algorithm: 'md5'
		});

		this.files.forEach(function (files) {
			var file = files.src[0];

			dirsum.digest(file, options.algorithm, function(error, data) {
				var json = JSON.stringify(data, null, '\t');

				fs.writeFile(files.dest, json, function (error) {
					if (error) {
						grunt.log.errorlns(error);
					}
					else {
						grunt.log.oklns('File "' + files.dest + '" created');
						done();
					}
				});
			});
		}, this);
	});
};


/*
// Gruntfile config
module.exports = function (grunt, options) {
	return {
		production: {
			options: {
				algorithm: 'md5'
			},

			files: [
				{
					'build/sum.json': 'build'
				}
			]
		}
	};
};
*/