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import async from 'async';
import fs from 'fs';
import p from 'path';
import util from 'util';
/**
* Load Bob task files in parallel.
* Only task files in specified taskNames will be loaded.
*
* @param {Array} taskNames: an array of task names
* @param {String} dir: base directory where task files are located
* @param {Function} cb: standard cb(err, result) callback
*/
function load(taskNames, dir, cb) {
const jobs = {};
taskNames.forEach((taskName) => {
jobs[taskName] = function (cb) {
const file = p.join(dir, taskName + '.json');
fs.access(file, fs.constants.F_OK, (err) => {
if (err) {
const _err = new Error(util.format('Unknown command: %s, use --help for more info', taskName));
cb(_err);
} else {
fs.readFile(file, cb);
}
});
};
});
function parse(err, results) {
if (!err) {
Object.keys(results).forEach((taskName) => {
results[taskName] = JSON.parse(results[taskName]);
});
}
cb(err, results);
}
async.parallel(jobs, parse);
}
const exports = {
load: load
};
export {
exports as default
}; |