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<div class="content" data-ice="content"><h1 data-ice="title">src/component/coverage/volatile-driver.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">'use strict';
const AbstractDriver = require('./abstract-driver');
const path = require('path');
const fse = require('fs-extra');
const os = require('os');
const fs = require('fs');
const pify = require('pify');
/**
* Volatile coverage storage driver
*/
class VolatileDriver extends AbstractDriver {
/**
* @param {string} name
*
* @returns {Promise}
*
* @private
*/
_read(name) {
const file = this._storageFile(name);
return fse.pathExists(file)
.then(exists => {
if (!exists) {
return Promise.resolve(null);
}
return pify(fs.readFile)(file);
});
}
/**
* @param {string} name
* @param {string} content
*
* @returns {Promise}
*
* @private
*/
_write(name, content) {
return fse.outputFile(this._storageFile(name), content);
}
/**
* @param {string} name
*
* @returns {string}
*
* @private
*/
_storageFile(name) {
return path.join(os.tmpDir(), '__recink_coverage_volatile__', name);
}
}
module.exports = VolatileDriver;
</code></pre>
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