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2 years ago
'use strict';
const fs = require('fs');
const path = require('path');
const uniqueString = require('unique-string');
const tempDir = require('temp-dir');
const isStream = require('is-stream');
const stream = require('stream');
const {promisify} = require('util');
const pipeline = promisify(stream.pipeline);
const {writeFile} = fs.promises;
const getPath = (prefix = '') => path.join(tempDir, prefix + uniqueString());
const writeStream = async (filePath, data) => pipeline(data, fs.createWriteStream(filePath));
module.exports.file = options => {
options = {
...options
};
if (options.name) {
if (options.extension !== undefined && options.extension !== null) {
throw new Error('The `name` and `extension` options are mutually exclusive');
}
return path.join(module.exports.directory(), options.name);
}
return getPath() + (options.extension === undefined || options.extension === null ? '' : '.' + options.extension.replace(/^\./, ''));
};
module.exports.directory = ({prefix = ''} = {}) => {
const directory = getPath(prefix);
fs.mkdirSync(directory);
return directory;
};
module.exports.write = async (data, options) => {
const filename = module.exports.file(options);
const write = isStream(data) ? writeStream : writeFile;
await write(filename, data);
return filename;
};
module.exports.writeSync = (data, options) => {
const filename = module.exports.file(options);
fs.writeFileSync(filename, data);
return filename;
};
Object.defineProperty(module.exports, 'root', {
get() {
return tempDir;
}
});