How to use tmp-promise - 10 common examples

const npmScript = process.argv[2];
// Get the path to the test dir to run.
const jestTestsPath = process.argv[3];

if (!npmScript) {
  console.error(chalk.red('Missing mandatory npm script to run'));
  process.exit(1);
}

if (!jestTestsPath) {
  console.error(chalk.red('Missing mandatory path to the tests dir to run'));
  process.exit(1);
}

// Cleanup the temporary even if non empty.
tmp.setGracefulCleanup(tmpOptions);

function spawnWithShell(cmd, args, options) {
  return spawn(cmd, args, { ...baseSpawnOptions, ...options });
}

function getPackedName() {
  return new Promise((resolve, reject) => {
    fs.readFile('package.json', (err, data) => {
      if (err) {
        reject(err);
      } else {
        const info = JSON.parse(data.toString());
        resolve(`${info.name}-${info.version}.tgz`);
      }
    });
  });

testRun.stdout.pipe(process.stdout);
    testRun.stderr.pipe(process.stderr);
    testRun.on('close', (exitCode) => {
      if (exitCode === 0) {
        resolve();
      } else {
        reject(new Error('Failed to run integration tests'));
      }
    });
  });
}

// Create a production-like environment in a temporarily created directory
// and then run the integration tests on it.
tmp
  .withDir((tmpDir) => {
    const tmpDirPath = tmpDir.path;
    const unpackedDirPath = path.join(tmpDirPath, 'package');

    return createPackage(tmpDirPath)
      .then((archiveFilePath) => unpackTarPackage(archiveFilePath, tmpDirPath))
      .then(() => installPackageDeps(unpackedDirPath))
      .then(() => runIntegrationTests(unpackedDirPath));
  }, tmpOptions)
  .catch((err) => {
    console.error(err.stack ? chalk.red(err.stack) : chalk.red(err));
    process.exit(1);
  });

before(async () => {
            UnityCacheServer.constructor._cache_instance = null;
            const tmpPath = tmp.tmpNameSync();

            process.env.NODE_CONFIG = JSON.stringify({
                Server: {
                        port: 0
                    },
                Cache: {
                    defaultModule: "cache_fs",
                    options: {
                        workers: 1, // test to ensure clustering is disabled automatically
                        cache_fs: {
                            cachePath: tmpPath
                        }
                    }
                },
                Diagnostics: {
                    clientRecorder: true,

async extractPage(pageNum) {
    try {
      return this.extractPageWithLib(pageNum);
    } catch (e) {
      console.error(`Could not extract file ${e.message}`);
    }

    // the convert command takes zero-indexed page numbers
    const page = pageNum - 1;
    const file = await tmp.file({ postfix: ".png" });

    const { filePath, cleanup } = await createTempSymlink(this.file);

    const command = [
      "convert",
      "-density",
      "400",
      `${filePath}[${page}]`,
      file.path
    ];

    try {
      await exec(command);
      cleanup();
    } catch (e) {
      console.error("Failed extracting image", e);

import fs from 'fs';

import axios from 'axios';
import tmp from 'tmp-promise';
import unzip from 'unzip';

import config from './config';

tmp.setGracefulCleanup();

export default {
  async downloadContract(projectId, revision, contractName) {
    console.log(`${config.coreUrl}/projects/${projectId}/revisions/${revision}/contracts/${contractName}/raw-content`);

    const response = await axios.get(
      `${config.coreUrl}/projects/${projectId}/revisions/${revision}/contracts/${contractName}/raw-content`,
      { responseType: 'arraybuffer', headers: { 'Content-Type': 'application/zip' } }
    );

    return await tmp.dir({ unsafeCleanup: true }) // create a temp directory with random name; this will be cleaned up automatically on process exit
      .then(o => { // save the download ZIP archive
        return new Promise((resolve, reject) => {
          fs.writeFile(`${o.path}/contract-content.zip`, response.data, 'UTF-8', function(err) {
            if (err) reject(err);
            else resolve(o.path);

private async _initialize() {
    const levelupOptions: any = { valueEncoding: "binary" };
    const store = this.options.db;
    let db;
    if (store) {
      db = await levelup(store as any, levelupOptions);
    } else {
      let directory = this.options.dbPath;
      if (!directory) {
        const dirInfo = await dir(tmpOptions);
        directory = dirInfo.path;
        this._cleanupDirectory = dirInfo.cleanup;

        // don't continue if we closed while we were waiting for the dir
        if (this.closed) return this._cleanup();
      }
      this.directory = directory;
      const store = encode(leveldown(directory), levelupOptions);
      db = await levelup(store, {});
    }

    // don't continue if we closed while we were waiting for the db
    if (this.closed) return this._cleanup();

    const open = db.open();
    this.trie = sub(db, "trie", levelupOptions);

task: async (ctx, task) => {
          // Create temporary directory
          if (!publishDir) {
            const { path: tmpDir } = await tmp.dir()
            publishDir = tmpDir
          }

          await prepareFilesForPublishing(publishDir, files, ignore)
          ctx.pathToPublish = publishDir

          return `Files copied to temporary directory: ${ctx.pathToPublish}`
        },
      },

let source;

        if (this._contextual) {
            const contextualParaphrase = this._downloadParaphrase(true)
                .pipe(new TypecheckStream(this._schemas));

            const basicSource = StreamUtils.chain([basicParaphrase, basicSynthetic], { objectMode: true });

            // Spool the basic (non-contextual, not augmented) dataset to disk
            // We need to do this because:
            // 1) We don't want to run to many generation/processing steps as a pipeline, because that
            //    would use too much memory
            // 2) We need to do multiple passes over the basic dataset for different reasons, and
            //    we can't cache it in memory
            const { path: basicDataset, fd: basicDatasetFD } =
                await tmp.file({ mode: 0o600, dir: '/var/tmp' });

            await StreamUtils.waitFinish(basicSource
                .pipe(new Genie.DatasetStringifier())
                .pipe(fs.createWriteStream(basicDataset, { fd: basicDatasetFD })));
            // basicDatasetFD is closed here

            let contexts = await
                fs.createReadStream(basicDataset, { encoding: 'utf8' })
                .pipe(byline())
                .pipe(new Genie.DatasetParser({ contextual: false }))
                .pipe(new Genie.ContextExtractor(this._schemas))
                .read();

            const contextualized =
                fs.createReadStream(basicDataset, { encoding: 'utf8' })
                .pipe(byline())

// Get path to simple tsconfig file which should be used for build
	const tsconfigPath = join(__dirname, '../../src/tsconfig-build.json');

	// Read the tsconfi file
	const tsConfigString = await fsReadFileAsync(tsconfigPath, { encoding: 'utf8'}) as string;
	const tsConfig = JSON.parse(tsConfigString);

	// Set absolute include paths
	const newIncludeFiles = [];
	for (const includeFile of tsConfig.include) {
		newIncludeFiles.push(join(process.cwd(), includeFile));
	}
	tsConfig.include = newIncludeFiles;

	// Write new custom tsconfig file
	const { fd, path, cleanup } = await file();
	await fsWriteAsync(fd, Buffer.from(JSON.stringify(tsConfig, null, 2), 'utf8'));

	return {
		path,
		cleanup,
	};
}

module.exports = function generateScriptFile( input, output ) {
	// We need to create a temp file that ESTK can run, this file will have
	// all paths that are going to be converted
	return tmp.file({ postfix: '.jsx' })

	// "tmp.file" returns an object with the more properties, but we are only
	// interested in the path property
		.then( ({ path: file }) => {
			log.verbose( 'Created temp file at', file )

			const script = createScriptContent( input, output )

			// Write script contents to temp file
			return new Promise( ( resolve, reject ) => {
				writeFile( file, script, err => {
					if ( err ) {
						return reject( err )
					}

					// Send file path to next function in the promise chain