make.js

// parse command line options
var argv = require('minimist')(process.argv.slice(2));

// modules
var fs = require('fs');
var os = require('os');
var path = require('path');
var semver = require('semver');
var util = require('./make-util');
var admzip = require('adm-zip');

// util functions
var cd = util.cd;
var cp = util.cp;
var mkdir = util.mkdir;
var rm = util.rm;
var test = util.test;
var run = util.run;
var banner = util.banner;
var rp = util.rp;
var fail = util.fail;
var ensureExists = util.ensureExists;
var pathExists = util.pathExists;
var buildNodeTask = util.buildNodeTask;
var addPath = util.addPath;
var copyTaskResources = util.copyTaskResources;
var matchFind = util.matchFind;
var matchCopy = util.matchCopy;
var ensureTool = util.ensureTool;
var assert = util.assert;
var getExternalsAsync = util.getExternalsAsync;
var createResjson = util.createResjson;
var createTaskLocJson = util.createTaskLocJson;
var validateTask = util.validateTask;
var fileToJson = util.fileToJson;
var createYamlSnippetFile = util.createYamlSnippetFile;
var createMarkdownDocFile = util.createMarkdownDocFile;
var getTaskNodeVersion = util.getTaskNodeVersion;
var writeUpdatedsFromGenTasks = false;

// global paths
var buildPath = path.join(__dirname, '_build');
var buildTasksPath = path.join(__dirname, '_build', 'Tasks');
var buildTestsPath = path.join(__dirname, '_build', 'Tests');
var buildTasksCommonPath = path.join(__dirname, '_build', 'Tasks', 'Common');
var testsLegacyPath = path.join(__dirname, 'Tests-Legacy');
var tasksPath = path.join(__dirname, 'Tasks');
var testsPath = path.join(__dirname, 'Tests');
var testPath = path.join(__dirname, '_test');
var legacyTestTasksPath = path.join(__dirname, '_test', 'Tasks');
var testTestsLegacyPath = path.join(__dirname, '_test', 'Tests-Legacy');
var binPath = path.join(__dirname, 'node_modules', '.bin');
var makeOptionsPath = path.join(__dirname, 'make-options.json');
var gendocsPath = path.join(__dirname, '_gendocs');
var packagePath = path.join(__dirname, '_package');
var coverageTasksPath = path.join(buildPath, 'coverage');
var baseConfigToolPath = path.join(__dirname, 'BuildConfigGen');
var genTaskPath = path.join(__dirname, '_generated');
var genTaskCommonPath = path.join(__dirname, '_generated', 'Common');

var CLI = {};

// node min version
var minNodeVer = '10.24.1';
if (semver.lt(process.versions.node, minNodeVer)) {
    fail('requires node >= ' + minNodeVer + '.  installed: ' + process.versions.node);
}

// Node 14 is supported by the build system, but not currently by the agent. Block it for now
var supportedNodeTargets = ["Node", "Node10"/*, "Node14"*/];
var node10Version = '10.24.1';
var node20Version = '20.14.0';

// add node modules .bin to the path so we can dictate version of tsc etc...
if (!test('-d', binPath)) {
    fail('node modules bin not found.  ensure npm install has been run.');
}
addPath(binPath);

// resolve list of tasks
var taskList;
if (argv.task) {
    // find using --task parameter
    taskList = matchFind(argv.task, tasksPath, { noRecurse: true, matchBase: true })
        .map(function (item) {
            return path.basename(item);
        });

    // If base tasks was not found, try to find the task in the _generated tasks folder
    if (taskList.length == 0 && fs.existsSync(genTaskPath)) {
        taskList = matchFind(argv.task, genTaskPath, { noRecurse: true, matchBase: true })
            .map(function (item) {
                return path.basename(item);
            });
    }

    if (!taskList.length) {
        fail('Unable to find any tasks matching pattern ' + argv.task);
    }
} else {
    // load the default list
    taskList = fileToJson(makeOptionsPath).tasks;
}

// set the runner options. should either be empty or a comma delimited list of test runners.
// for example: ts OR ts,ps
//
// note, currently the ts runner igores this setting and will always run.
process.env['TASK_TEST_RUNNER'] = argv.runner || '';

function getTaskList(taskList) {
    let tasksToBuild = taskList;

    if (!fs.existsSync(genTaskPath)) return tasksToBuild;

    const generatedTaskFolders = fs.readdirSync(genTaskPath)
        .filter((taskName) => {
            return fs.statSync(path.join(genTaskPath, taskName)).isDirectory();
        });

    taskList.forEach((taskName) => {
        generatedTaskFolders.forEach((generatedTaskName) => {
            if (taskName !== generatedTaskName && generatedTaskName.startsWith(taskName)) {
                tasksToBuild.push(generatedTaskName);
            }
        });
    });

    return tasksToBuild.sort();
}

function ensureBuildTasksAndRemoveTestPath() {
    if (!fs.existsSync(buildTasksPath)) {
        mkdir('-p', buildTasksPath);
    }
    rm('-Rf', testPath);
};

CLI.clean = function() {
    rm('-Rf', buildPath);
    ensureBuildTasksAndRemoveTestPath();
};


//
// Generate documentation (currently only YAML snippets)
// ex: node make.js gendocs
// ex: node make.js gendocs --task ShellScript
//
CLI.gendocs = function() {
    rm('-Rf', gendocsPath);
    mkdir('-p', gendocsPath);
    console.log();
    console.log('> generating docs');

    taskList.forEach(function(taskName) {
        var taskPath = path.join(tasksPath, taskName);
        ensureExists(taskPath);

        // load the task.json
        var taskJsonPath = path.join(taskPath, 'task.json');
        if (test('-f', taskJsonPath)) {
            var taskDef = fileToJson(taskJsonPath);
            validateTask(taskDef);

            // create YAML snippet Markdown
            var yamlOutputFilename = taskName + '.md';
            createYamlSnippetFile(taskDef, gendocsPath, yamlOutputFilename);

            // create Markdown documentation file
            var mdDocOutputFilename = taskName + '.md';
            createMarkdownDocFile(taskDef, taskJsonPath, gendocsPath, mdDocOutputFilename);
        }
    });

    banner('Generating docs successful', true);
}

//
// ex: node make.js build
// ex: node make.js build --task ShellScript
//
CLI.build = async function(/** @type {{ task: string }} */ argv) 
{
    if (process.env.TF_BUILD) {
        fail('Please use serverBuild for CI builds for proper validation');
    }

    writeUpdatedsFromGenTasks = true;
    await CLI.serverBuild(argv);
}

CLI.buildandtest = async function (/** @type {{ task: string }} */ argv) {
    await CLI.build(argv);
    await CLI.test(argv);
}

CLI.serverBuild = async function(/** @type {{ task: string }} */ argv) {
    ensureBuildTasksAndRemoveTestPath();
    ensureTool('tsc', '--version', 'Version 4.0.2');
    ensureTool('npm', '--version', function (output) {
        if (semver.lt(output, '5.6.0')) {
            fail('Expected 5.6.0 or higher. To fix, run: npm install -g npm');
        }
    });

    // Need to validate generated tasks first
    const makeOptions = fileToJson(makeOptionsPath);

    // Verify generated files across tasks are up-to-date
    util.processGeneratedTasks(baseConfigToolPath, taskList, makeOptions, writeUpdatedsFromGenTasks, argv.sprint, argv['debug-agent-dir']);

    const allTasks = getTaskList(taskList);

    // Wrap build function  to store files that changes after the build 
    const buildTaskWrapped = util.syncGeneratedFilesWrapper(buildTaskAsync, genTaskPath, writeUpdatedsFromGenTasks);
    const { allTasksNode20, allTasksDefault } = allTasks.
        reduce((res, taskName) => {
            if (getNodeVersion(taskName) == 20) {
                res.allTasksNode20.push(taskName)
            } else {
                res.allTasksDefault.push(taskName)
            }

            return res;
        }, {allTasksNode20: [], allTasksDefault: []})
    
    if (allTasksNode20.length > 0) {
        await util.installNodeAsync('20');
        ensureTool('node', '--version', `v${node20Version}`);
        for (const taskName of allTasksNode20) {
            await buildTaskWrapped(taskName, allTasksNode20.length, 20);
        }
    } 
    if (allTasksDefault.length > 0) {
       await util.installNodeAsync('10');
        ensureTool('node', '--version', `v${node10Version}`);
        for (const taskName of allTasksDefault) {
            await buildTaskWrapped(taskName, allTasksNode20.length, 10);
        }
    }

    // Remove Commons from _generated folder as it is not required
    if (fs.existsSync(genTaskCommonPath)) {
        rm('-Rf', genTaskCommonPath);
    }

    banner('Build successful', true);
}

function getNodeVersion (taskName) {
    let taskPath = tasksPath;
    // if task exists inside gen folder prefere it
    if (fs.existsSync(path.join(genTaskPath, taskName))) {
        taskPath = genTaskPath;
    }

    // get node runner from task.json
    const handlers = getTaskNodeVersion(taskPath, taskName);
    if (handlers.includes(20)) return 20;

    return 10;

}

async function buildTaskAsync(taskName, taskListLength, nodeVersion) {
    let isGeneratedTask = false;
    banner(`Building task ${taskName} using Node.js ${nodeVersion}`);
    const removeNodeModules = taskListLength > 1;

    // If we have the task in generated folder, prefer to build from there and add all generated tasks which starts with task name
    var taskPath = path.join(genTaskPath, taskName);
    if (fs.existsSync(taskPath)) {
        // Need to add all tasks which starts with task name
        console.log('Found generated task: ' + taskName);
        isGeneratedTask = true;
    } else {
        taskPath = path.join(tasksPath, taskName);
    }

    ensureExists(taskPath);

    // load the task.json
    var outDir;
    var shouldBuildNode = test('-f', path.join(taskPath, 'tsconfig.json'));
    var taskJsonPath = path.join(taskPath, 'task.json');
    if (test('-f', taskJsonPath)) {
        var taskDef = fileToJson(taskJsonPath);
        validateTask(taskDef);

        // fixup the outDir (required for relative pathing in legacy L0 tests)
        outDir = path.join(buildTasksPath, taskName);

        if(fs.existsSync(outDir))
        {
            console.log('Remove existing outDir: ' + outDir);
            rm('-rf', outDir);
        }

        // create loc files
        createTaskLocJson(taskPath);
        createResjson(taskDef, taskPath);

        // determine the type of task
        shouldBuildNode = shouldBuildNode || supportedNodeTargets.some(node => taskDef.execution.hasOwnProperty(node));
    } else {
        outDir = path.join(buildTasksPath, path.basename(taskPath));
    }

    mkdir('-p', outDir);

    // get externals
    var taskMakePath = path.join(taskPath, 'make.json');
    var taskMake = test('-f', taskMakePath) ? fileToJson(taskMakePath) : {};
    if (taskMake.hasOwnProperty('externals')) {
        console.log('');
        console.log('> getting task externals');
        await getExternalsAsync(taskMake.externals, outDir);
    }

    //--------------------------------
    // Common: build, copy, install
    //--------------------------------
    var commonPacks = [];
    if (taskMake.hasOwnProperty('common')) {
        var common = taskMake['common'];

        for (const mod of common) {
            var modPath = path.join(taskPath, mod['module']);
            var modName = path.basename(modPath);
            var modOutDir = path.join(buildTasksCommonPath, modName);

            if (!test('-d', modOutDir)) {
                banner('Building module ' + modPath, true);

                // Ensure that Common folder exists for _generated tasks, otherwise copy it from Tasks folder
                if (!fs.existsSync(genTaskCommonPath) && isGeneratedTask) {
                    cp('-Rf', path.resolve(tasksPath, "Common"), genTaskCommonPath);
                }

                mkdir('-p', modOutDir);

                // create loc files
                var modJsonPath = path.join(modPath, 'module.json');
                if (test('-f', modJsonPath)) {
                    createResjson(fileToJson(modJsonPath), modPath);
                }

                // npm install and compile
                if ((mod.type === 'node' && mod.compile == true) || test('-f', path.join(modPath, 'tsconfig.json'))) {
                    buildNodeTask(modPath, modOutDir);
                }

                // copy default resources and any additional resources defined in the module's make.json
                console.log();
                console.log('> copying module resources');
                var modMakePath = path.join(modPath, 'make.json');
                var modMake = test('-f', modMakePath) ? fileToJson(modMakePath) : {};
                copyTaskResources(modMake, modPath, modOutDir);

                // get externals
                if (modMake.hasOwnProperty('externals')) {
                    console.log('');
                    console.log('> getting module externals');
                    await getExternalsAsync(modMake.externals, modOutDir);
                }

                if (mod.type === 'node' && mod.compile == true || test('-f', path.join(modPath, 'package.json'))) {
                    var commonPack = util.getCommonPackInfo(modOutDir);

                    // assert the pack file does not already exist (name should be unique)
                    if (test('-f', commonPack.packFilePath)) {
                        fail(`Pack file already exists: ${commonPack.packFilePath}`);
                    }

                    // pack the Node module. a pack file is required for dedupe.
                    // installing from a folder creates a symlink, and does not dedupe.
                    cd(path.dirname(modOutDir));
                    run(`npm pack ./${path.basename(modOutDir)}`);
                }
            }

            // store the npm pack file info
            if (mod.type === 'node' && mod.compile == true) {
                commonPacks.push(util.getCommonPackInfo(modOutDir));
            // copy ps module resources to the task output dir
            } else if (mod.type === 'ps') {
                console.log();
                console.log('> copying ps module to task');
                var dest;
                if (mod.hasOwnProperty('dest')) {
                    dest = path.join(outDir, mod.dest, modName);
                } else {
                    dest = path.join(outDir, 'ps_modules', modName);
                }

                matchCopy('!Tests', modOutDir, dest, { noRecurse: true, matchBase: true });
            }
        }

        // npm install the common modules to the task dir
        if (commonPacks.length) {
            cd(taskPath);
            var installPaths = commonPacks.map(function (commonPack) {
                return `file:${path.relative(taskPath, commonPack.packFilePath)}`;
            });
            run(`npm install --save-exact ${installPaths.join(' ')}`);
        }
    }

    // build Node task
    if (shouldBuildNode) {
        buildNodeTask(taskPath, outDir);
    }

    // remove the hashes for the common packages, they change every build
    if (commonPacks.length) {
        var lockFilePath = path.join(taskPath, 'package-lock.json');
        if (!test('-f', lockFilePath)) {
            lockFilePath = path.join(taskPath, 'npm-shrinkwrap.json');
        }
        var packageLock = fileToJson(lockFilePath);
        var dependencies = packageLock.dependencies || packageLock.packages;
        Object.keys(dependencies).forEach(function (dependencyName) {
            commonPacks.forEach(function (commonPack) {
                if (dependencyName == commonPack.packageName || dependencyName == `node_modules/${commonPack.packageName}`) {
                    delete dependencies[dependencyName].integrity;
                }
            });
        });
        fs.writeFileSync(lockFilePath, JSON.stringify(packageLock, null, '  '));
    }

    // copy default resources and any additional resources defined in the task's make.json
    console.log();
    console.log('> copying task resources');
    copyTaskResources(taskMake, taskPath, outDir);

    if (removeNodeModules) {
        const taskNodeModulesPath = path.join(taskPath, 'node_modules');

        if (fs.existsSync(taskNodeModulesPath)) {
            console.log('\n> removing node modules');
            rm('-Rf', taskNodeModulesPath);
        }

        const taskTestsNodeModulesPath = path.join(taskPath, 'Tests', 'node_modules');

        if (fs.existsSync(taskTestsNodeModulesPath)) {
            console.log('\n> removing task tests node modules');
            rm('-Rf', taskTestsNodeModulesPath);
        }
    }

    // remove duplicated task libs node modules from build tasks.
    var buildTasksNodeModules = path.join(buildTasksPath, taskName, 'node_modules');
    var duplicateTaskLibPaths = [
        'azure-pipelines-tasks-java-common', 'azure-pipelines-tasks-codecoverage-tools', 'azure-pipelines-tasks-codeanalysis-common',
        'azure-pipelines-tool-lib', 'azure-pipelines-tasks-utility-common', 'azure-pipelines-tasks-packaging-common', 'artifact-engine',
        'azure-pipelines-tasks-azure-arm-rest'
    ];
    for (var duplicateTaskPath of duplicateTaskLibPaths) {
        const buildTasksDuplicateNodeModules = path.join(buildTasksNodeModules, duplicateTaskPath, 'node_modules', 'azure-pipelines-task-lib');
        if (fs.existsSync(buildTasksDuplicateNodeModules)) {
            console.log(`\n> removing duplicated task-lib node modules in ${buildTasksDuplicateNodeModules}`);
            rm('-Rf', buildTasksDuplicateNodeModules);
        }
    }
}

//
// will run tests for the scope of tasks being built
// npm test
// node make.js test
// node make.js test --task ShellScript --suite L0
//
CLI.test = async function(/** @type {{ suite: string; node: string; task: string }} */ argv) {
    var minIstanbulVersion = '20';
    ensureTool('tsc', '--version', 'Version 4.0.2');
    ensureTool('mocha', '--version', '6.2.3');

    // build the general tests and ps test infra
    rm('-Rf', buildTestsPath);
    mkdir('-p', path.join(buildTestsPath));
    cd(testsPath);
    run(`tsc --rootDir ${testsPath} --outDir ${buildTestsPath}`);
    console.log();
    console.log('> copying ps test lib resources');
    mkdir('-p', path.join(buildTestsPath, 'lib'));
    matchCopy(path.join('**', '@(*.ps1|*.psm1)'), path.join(testsPath, 'lib'), path.join(buildTestsPath, 'lib'));

    var suiteType = argv.suite || 'L0';
    async function runTaskTests(taskName) {
        banner('Testing: ' + taskName);
        // find the tests
        var nodeVersions = argv.node ? new Array(argv.node) : [Math.max(...getTaskNodeVersion(buildTasksPath, taskName))];
        var pattern1 = path.join(buildTasksPath, taskName, 'Tests', suiteType + '.js');
        var pattern2 = path.join(buildTasksPath, 'Common', taskName, 'Tests', suiteType + '.js');
        var taskPath = path.join('**', '_build', 'Tasks', taskName, "**", "*.js").replace(/\\/g, '/');
        var isNodeTask = util.isNodeTask(buildTasksPath, taskName);

        var isReportWasFormed = false;
        var testsSpec = [];

        if (fs.existsSync(pattern1)) {
            testsSpec.push(pattern1);
        }
        if (fs.existsSync(pattern2)) {
            testsSpec.push(pattern2);
        }

        if (testsSpec.length == 0) {
            console.warn(`Unable to find tests using the following patterns: ${JSON.stringify([pattern1, pattern2])}`);
            return;
        }

        for (let nodeVersion of nodeVersions) {
            try {
                nodeVersion = String(nodeVersion);
                banner('Run Mocha Suits for node ' + nodeVersion);
                // setup the version of node to run the tests
                await util.installNodeAsync(nodeVersion);


                if (isNodeTask && !isReportWasFormed && nodeVersion >= 10) {
                    run('nyc --all -n ' + taskPath + ' --report-dir ' + coverageTasksPath + ' mocha ' + testsSpec.join(' '), /*inheritStreams:*/true);
                    util.renameCodeCoverageOutput(coverageTasksPath, taskName);
                    isReportWasFormed = true;
                }
                else {
                    run('mocha ' + testsSpec.join(' '), /*inheritStreams:*/true);
                }
            }  catch (e) {
                console.error(e);
                process.exit(1);
            }
        }
    }

    // Run tests for each task that exists
    const allTasks = getTaskList(taskList);

    for (const taskName of allTasks) {
        var taskPath = path.join(buildTasksPath, taskName);
        if (fs.existsSync(taskPath)) {
            await runTaskTests(taskName);
        }
    };

    if (!argv.task) {
        banner('Running common library tests');
        var commonLibPattern = path.join(buildTasksPath, 'Common', '*', 'Tests', suiteType + '.js');
        var specs = [];
        if (matchFind(commonLibPattern, buildTasksPath).length > 0) {
            specs.push(commonLibPattern);
        }
        if (specs.length > 0) {
            // setup the version of node to run the tests
            await util.installNodeAsync(argv.node);
            run('mocha ' + specs.join(' '), /*inheritStreams:*/true);
        } else {
            console.warn("No common library tests found");
        }
    }

    // Run common tests
    banner('Running common tests');
    var commonPattern = path.join(buildTestsPath, suiteType + '.js');
    var specs = matchFind(commonPattern, buildTestsPath, { noRecurse: true });
    if (specs.length > 0) {
        // setup the version of node to run the tests
        await util.installNodeAsync(argv.node);
        run('mocha ' + specs.join(' '), /*inheritStreams:*/true);
    } else {
        console.warn("No common tests found");
    }

    try {
        // Installing node version 10 to run code coverage report, since common library tests run under node 6,
        // which is incompatible with nyc
        await util.installNodeAsync(minIstanbulVersion);
        util.rm(path.join(coverageTasksPath, '*coverage-summary.json'));
        util.run(`nyc merge ${coverageTasksPath} ${path.join(coverageTasksPath, 'mergedcoverage.json')}`, true);
        util.rm(path.join(coverageTasksPath, '*-coverage.json'));
        util.run(`nyc report -t ${coverageTasksPath} --report-dir ${coverageTasksPath} --reporter=cobertura`, true);
        util.rm(path.join(coverageTasksPath, 'mergedcoverage.json'));
    } catch (e) {
        console.log('Error while generating coverage report')
    }
}

//
// node make.js testLegacy
// node make.js testLegacy --suite L0/XCode
//

CLI.testLegacy = async function(/** @type {{ suite: string; node: string; task: string }} */ argv) {
    ensureTool('tsc', '--version', 'Version 4.0.2');
    ensureTool('mocha', '--version', '6.2.3');

    if (argv.suite) {
        fail('The "suite" parameter has been deprecated. Use the "task" parameter instead.');
    }

    // clean
    console.log('removing _test');
    rm('-Rf', testPath);

    // copy the L0 source files for each task; copy the layout for each task
    console.log();
    console.log('> copying tasks');
    taskList.forEach(function (taskName) {
        var testCopySource = path.join(testsLegacyPath, 'L0', taskName);
        // copy the L0 source files if exist
        if (test('-e', testCopySource)) {
            console.log('copying ' + taskName);
            var testCopyDest = path.join(testTestsLegacyPath, 'L0', taskName);
            matchCopy('*', testCopySource, testCopyDest, { noRecurse: true, matchBase: true });

            // copy the task layout
            var taskCopySource = path.join(buildTasksPath, taskName);
            var taskCopyDest = path.join(legacyTestTasksPath, taskName);
            matchCopy('*', taskCopySource, taskCopyDest, { noRecurse: true, matchBase: true });
        }

        // copy each common-module L0 source files if exist
        var taskMakePath = path.join(tasksPath, taskName, 'make.json');
        var taskMake = test('-f', taskMakePath) ? fileToJson(taskMakePath) : {};
        if (taskMake.hasOwnProperty('common')) {
            var common = taskMake['common'];
            common.forEach(function(mod) {
                // copy the common-module L0 source files if exist and not already copied
                var modName = path.basename(mod['module']);
                console.log('copying ' + modName);
                var modTestCopySource = path.join(testsLegacyPath, 'L0', `Common-${modName}`);
                var modTestCopyDest = path.join(testTestsLegacyPath, 'L0', `Common-${modName}`);
                if (test('-e', modTestCopySource) && !test('-e', modTestCopyDest)) {
                    matchCopy('*', modTestCopySource, modTestCopyDest, { noRecurse: true, matchBase: true });
                }
                var modCopySource = path.join(buildTasksCommonPath, modName);
                var modCopyDest = path.join(legacyTestTasksPath, 'Common', modName);
                if (test('-e', modCopySource) && !test('-e', modCopyDest)) {
                    // copy the common module layout
                    matchCopy('*', modCopySource, modCopyDest, { noRecurse: true, matchBase: true });
                }
            });
        }
    });

    // short-circuit if no tests
    if (!test('-e', testTestsLegacyPath)) {
        banner('no legacy tests found', true);
        return;
    }

    // copy the legacy test infra
    console.log();
    console.log('> copying legacy test infra');
    matchCopy('@(definitions|lib|tsconfig.json)', testsLegacyPath, testTestsLegacyPath, { noRecurse: true, matchBase: true });

    // copy the lib tests when running all legacy tests
    if (!argv.task) {
        matchCopy('*', path.join(testsLegacyPath, 'L0', 'lib'), path.join(testTestsLegacyPath, 'L0', 'lib'), { noRecurse: true, matchBase: true });
    }

    // compile legacy L0 and lib
    cd(testTestsLegacyPath);
    run('tsc --rootDir ' + testTestsLegacyPath);

    // create a test temp dir - used by the task runner to copy each task to an isolated dir
    var tempDir = path.join(testTestsLegacyPath, 'Temp');
    process.env['TASK_TEST_TEMP'] = tempDir;
    mkdir('-p', tempDir);

    // suite paths
    var testsSpec = matchFind(path.join('**', '_suite.js'), path.join(testTestsLegacyPath, 'L0'));
    if (!testsSpec.length) {
        fail(`Unable to find tests using the pattern: ${path.join('**', '_suite.js')}`);
    }

    // setup the version of node to run the tests
    await util.installNodeAsync(argv.node);

    // mocha doesn't always return a non-zero exit code on test failure. when only
    // a single suite fails during a run that contains multiple suites, mocha does
    // not appear to always return non-zero. as a workaround, the following code
    // creates a wrapper suite with an "after" hook. in the after hook, the state
    // of the runnable context is analyzed to determine whether any tests failed.
    // if any tests failed, log a ##vso command to fail the build.
    var testsSpecPath = ''
    var testsSpecPath = path.join(testTestsLegacyPath, 'testsSpec.js');
    var contents = 'var __suite_to_run;' + os.EOL;
    contents += 'describe(\'Legacy L0\', function (__outer_done) {' + os.EOL;
    contents += '    after(function (done) {' + os.EOL;
    contents += '        var failedCount = 0;' + os.EOL;
    contents += '        var suites = [ this._runnable.parent ];' + os.EOL;
    contents += '        while (suites.length) {' + os.EOL;
    contents += '            var s = suites.pop();' + os.EOL;
    contents += '            suites = suites.concat(s.suites); // push nested suites' + os.EOL;
    contents += '            failedCount += s.tests.filter(function (test) { return test.state != "passed" }).length;' + os.EOL;
    contents += '        }' + os.EOL;
    contents += '' + os.EOL;
    contents += '        if (failedCount && process.env.TF_BUILD) {' + os.EOL;
    contents += '            console.log("##vso[task.logissue type=error]" + failedCount + " test(s) failed");' + os.EOL;
    contents += '            console.log("##vso[task.complete result=Failed]" + failedCount + " test(s) failed");' + os.EOL;
    contents += '        }' + os.EOL;
    contents += '' + os.EOL;
    contents += '        done();' + os.EOL;
    contents += '    });' + os.EOL;
    testsSpec.forEach(function (itemPath) {
        contents += `    __suite_to_run = require(${JSON.stringify(itemPath)});` + os.EOL;
    });
    contents += '});' + os.EOL;
    fs.writeFileSync(testsSpecPath, contents);
    run('mocha ' + testsSpecPath, /*inheritStreams:*/true);
}

//
// node make.js package
// This will take the built tasks and create the files we need to publish them.
//
CLI.package = function() {
    banner('Starting package process...')

    // START LOCAL CONFIG
    // console.log('> Cleaning packge path');
    // rm('-Rf', packagePath);
    // TODO: Only need this when we run locally
    //var layoutPath = util.createNonAggregatedZip(buildPath, packagePath);
    // END LOCAL CONFIG
    // Note: The local section above is needed when running layout locally due to discrepancies between local build and
    //       slicing in CI. This will get cleaned up after we fully roll out and go to build only changed.

    var layoutPath = path.join(packagePath, 'milestone-layout');
    util.createNugetPackagePerTask(packagePath, layoutPath);
}

// used by CI that does official publish
CLI.publish = function(/** @type {{ server: string; task: string }} */ argv) {
    var server = argv.server;
    assert(server, 'server');

    // if task specified, skip
    if (argv.task) {
        banner('Task parameter specified. Skipping publish.');
        return;
    }

    // get the branch/commit info
    var refs = util.getRefs();

    // test whether to publish the non-aggregated tasks zip
    // skip if not the tip of a release branch
    var release = refs.head.release;
    var commit = refs.head.commit;
    if (!release ||
        !refs.releases[release] ||
        commit != refs.releases[release].commit) {

        // warn not publishing the non-aggregated
        console.log(`##vso[task.logissue type=warning]Skipping publish for non-aggregated tasks zip. HEAD is not the tip of a release branch.`);
    } else {
        // store the non-aggregated tasks zip
        var nonAggregatedZipPath = path.join(packagePath, 'non-aggregated-tasks.zip');
        util.storeNonAggregatedZip(nonAggregatedZipPath, release, commit);
    }

    // resolve the nupkg path
    var nupkgFile;
    var nupkgDir = path.join(packagePath, 'pack-target');
    if (!test('-d', nupkgDir)) {
        fail('nupkg directory does not exist');
    }

    var fileNames = fs.readdirSync(nupkgDir);
    if (fileNames.length != 1) {
        fail('Expected exactly one file under ' + nupkgDir);
    }

    nupkgFile = path.join(nupkgDir, fileNames[0]);

    // publish the package
    ensureTool('nuget3.exe');
    run(`nuget3.exe push ${nupkgFile} -Source ${server} -apikey Skyrise`);
}


var agentPluginTaskNames = ['Cache', 'CacheBeta', 'DownloadPipelineArtifact', 'PublishPipelineArtifact'];
// used to bump the patch version in task.json files
CLI.bump = function() {
    verifyAllAgentPluginTasksAreInSkipList();

    taskList.forEach(function (taskName) {
        // load files
        var taskJsonPath = path.join(tasksPath, taskName, 'task.json');
        var taskJson = JSON.parse(fs.readFileSync(taskJsonPath));

        var taskLocJsonPath = path.join(tasksPath, taskName, 'task.loc.json');
        var taskLocJson = JSON.parse(fs.readFileSync(taskLocJsonPath));

        // skip agent plugin tasks
        if(agentPluginTaskNames.indexOf(taskJson.name) > -1) {
            return;
        }

        if (typeof taskJson.version.Patch != 'number') {
            fail(`Error processing '${taskName}'. version.Patch should be a number.`);
        }

        taskJson.version.Patch = taskJson.version.Patch + 1;
        taskLocJson.version.Patch = taskLocJson.version.Patch + 1;

        fs.writeFileSync(taskJsonPath, JSON.stringify(taskJson, null, 2));
        fs.writeFileSync(taskLocJsonPath, JSON.stringify(taskLocJson, null, 2));

        // Check that task.loc and task.loc.json versions match
        if ((taskJson.version.Major !== taskLocJson.version.Major) ||
            (taskJson.version.Minor !== taskLocJson.version.Minor) ||
            (taskJson.version.Patch !== taskLocJson.version.Patch)) {
            console.log(`versions dont match for task '${taskName}', task json: ${JSON.stringify(taskJson.version)} task loc json: ${JSON.stringify(taskLocJson.version)}`);
        }
    });
}

CLI.getCommonDeps = function() {
    var first = true;
    var totalReferencesToCommonPackages = 0;
    var commonCounts = {};
    taskList.forEach(function (taskName) {
        var commonDependencies = [];
        var packageJsonPath = path.join(tasksPath, taskName, 'package.json');

        if (fs.existsSync(packageJsonPath)) {
            var packageJson = JSON.parse(fs.readFileSync(packageJsonPath));

            if (first)
            {
                Object.values(packageJson.dependencies).forEach(function (v) {
                    if (v.indexOf('Tasks/Common') !== -1)
                    {
                        var depName = v
                            .replace('file:../../_build/Tasks/Common/', '')
                            .replace('-0.1.0.tgz', '')
                            .replace('-1.0.0.tgz', '')
                            .replace('-1.0.1.tgz', '')
                            .replace('-1.0.2.tgz', '')
                            .replace('-1.1.0.tgz', '')
                            .replace('-2.0.0.tgz', '')

                        commonDependencies.push(depName);

                        totalReferencesToCommonPackages++;

                        if (commonCounts[depName]) {
                            commonCounts[depName]++;
                        } else {
                            commonCounts[depName] = 1;
                        }
                    }
                });
            }
        }

        if (commonDependencies.length > 0)
        {
            console.log('----- ' + taskName + ' (' + commonDependencies.length + ') -----');

            commonDependencies.forEach(function (dep) {
                console.log(dep);
            });
        }
    });

    console.log('');
    console.log('##### ##### ##### #####');
    console.log('totalReferencesToCommonPackages: ' + totalReferencesToCommonPackages);
    console.log('');

    Object.keys(commonCounts).forEach(function (k) {
        console.log(k + ': ' + commonCounts[k]);
    });
}

function verifyAllAgentPluginTasksAreInSkipList() {
    var missingTaskNames = [];

    taskList.forEach(function (taskName) {
        // load files
        var taskJsonPath = path.join(tasksPath, taskName, 'task.json');
        var taskJson = JSON.parse(fs.readFileSync(taskJsonPath));

        if (taskJson.execution && taskJson.execution.AgentPlugin) {
            if (agentPluginTaskNames.indexOf(taskJson.name) === -1 && missingTaskNames.indexOf(taskJson.name) === -1) {
                missingTaskNames.push(taskJson.name);
            }
        }
    });

    if (missingTaskNames.length > 0) {
        fail('The following tasks must be added to agentPluginTaskNames: ' + JSON.stringify(missingTaskNames));
    }
}

// Merge all tasks in a build config to base tasks
// e.g node make.js mergeBuildConfig --config Node20_225
// This will 'merge' all tasks under build config Node20_225 into base tasks.
// 1. Copy generated task to base task, delete generated files in  _generated/Task_Node20 and Tasks/taskname/_buildConfig/Node20.
// 2. Update versionmap.txt file.
// 3. Remove _buildConfigMapping section in task.json and task-loc.json
// 4. Update the buildConfig section in make-option.json.  
CLI.mergeBuildConfig = function(/** @type {{ config: string }} */ argv) {
    var config = argv.config
    banner(`Merging all tasks under ${config} build config into base tasks...`);
    util.mergeBuildConfigIntoBaseTasks(config);
}

// Generate sprintly zip
// This methods generate a zip file that contains the tip of all task major versions for the last sprint
// Use:
//   node make.js gensprintlyzip --sprint=m153 --outputdir=E:\testing\ --depxmlpath=C:\Users\stfrance\Desktop\tempdeps.xml
//
// Result:
//   azure-pipelines.firstpartytasks.m153.zip
//
// The generated zip can be uploaded to an account using tfx cli and it will install all of the tasks contained in the zip.
// The zip should be uploaded to the azure-pipelines-tasks repository
//
// Process:
//
//  We create a workspace folder to do all of our work in. This is created in the output directory. output-dir/workspace-GUID
//  Inside here, we first create a package file based on the packages we want to download.
//  Then nuget restore, then get zips, then create zip.
CLI.gensprintlyzip = function(/** @type {{ sprint: string; outputdir: string; depxmlpath: string }} */ argv) {
    var sprint = argv.sprint;
    var outputDirectory = argv.outputdir;
    var dependenciesXmlFilePath = argv.depxmlpath;
    var taskFeedUrl = 'https://mseng.pkgs.visualstudio.com/_packaging/Codex-Deps/nuget/v3/index.json';

    console.log('# Creating sprintly zip.');

    console.log('\n# Loading tasks from dependencies file.');
    var dependencies = fs.readFileSync(dependenciesXmlFilePath, 'utf8');

    var dependenciesArr = dependencies.split('\n');
    console.log(`Found ${dependenciesArr.length} dependencies.`);

    var taskDependencies = [];
    var taskStringArr = [];

    dependenciesArr.forEach(function (currentDep) {
        if (currentDep.indexOf('Mseng.MS.TF.DistributedTask.Tasks.') === -1) {
            return;
        }

        taskStringArr.push(currentDep);

        var depDetails = currentDep.split("\"");
        var name = depDetails[1];
        var version = depDetails[3];

        taskDependencies.push({ 'name': name, 'version': version });
    });

    console.log(`Found ${taskDependencies.length} task dependencies.`);

    console.log('\n# Downloading task nuget packages.');

    var tempWorkspaceDirectory = `${outputDirectory}\\workspace-${Math.floor(Math.random() * 1000000000)}`;
    console.log(`Creating temporary workspace directory ${tempWorkspaceDirectory}`);

    fs.mkdirSync(tempWorkspaceDirectory);

    console.log('Writing packages.config file');

    var packagesConfigPath = `${tempWorkspaceDirectory}\\packages.config`;
    var packagesConfigContent = '<?xml version="1.0" encoding="utf-8"?>\n';
    packagesConfigContent += '<packages>\n';

    taskStringArr.forEach(function (taskString) {
        packagesConfigContent += taskString;
    });

    packagesConfigContent += '</packages>';

    fs.writeFileSync(packagesConfigPath, packagesConfigContent);
    console.log(`Completed writing packages.json file. ${packagesConfigPath}`);

    console.log('\n# Restoring NuGet packages.');
    run(`nuget restore ${tempWorkspaceDirectory} -source "${taskFeedUrl}" -packagesdirectory ${tempWorkspaceDirectory}\\packages`);
    console.log('Restoring NuGet packages complete.');

    console.log(`\n# Creating sprintly zip.`);

    var sprintlyZipContentsPath = `${tempWorkspaceDirectory}\\sprintly-zip`;
    fs.mkdirSync(sprintlyZipContentsPath);

    console.log('Sprintly zip folder created.');

    console.log('Copying task zip files to sprintly zip folder.');
    taskDependencies.forEach(function (taskDependency) {
        var nameAndVersion = `${taskDependency.name}.${taskDependency.version}`;
        var src = `${tempWorkspaceDirectory}\\packages\\${nameAndVersion}\\content\\task.zip`; // workspace-735475103\packages\Mseng.MS.TF.DistributedTask.Tasks.AndroidBuildV1.1.0.16\content\task.zip
        var dest = `${sprintlyZipContentsPath}\\${nameAndVersion}.zip`; // workspace-735475103\sprintly-zip\

        fs.copyFileSync(src, dest);
    });
    console.log('Copying task zip files to sprintly zip folder complete.');

    console.log('Creating sprintly zip file from folder.');

    var sprintlyZipPath = `${outputDirectory}azure-pipelines.firstpartytasks.${sprint}.zip`;

    var zip = new admzip();
    zip.addLocalFolder(sprintlyZipContentsPath);
    zip.writeZip(sprintlyZipPath);

    console.log('Creating sprintly zip file from folder complete.');
    console.log('\n# Cleaning up folders');
    console.log(`Deleting temporary workspace directory ${tempWorkspaceDirectory}`);
    rm('-Rf', tempWorkspaceDirectory);

    console.log('\n# Completed creating sprintly zip.');
}

var command  = argv._[0];

if (typeof CLI[command] !== 'function') {
  fail(`Invalid CLI command: "${command}"\r\nValid commands: ${Object.keys(CLI).join(', ')}`);
}

CLI[command](argv);