deps: add corepack

Corepack provides shims for Yarn and pnpm in order to soften the
developer experience when working on Node projects.

Refs: https://github.com/nodejs/node/issues/15244
Refs: https://github.com/nodejs/TSC/issues/904

PR-URL: https://github.com/nodejs/node/pull/39608
Backport-PR-URL: https://github.com/nodejs/node/pull/40479
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

2 files changed, 81 insertions, 0 deletions

diff --git a/test/parallel/test-corepack-version.js b/test/parallel/test-corepack-version.js
new file mode 100644
index 00000000000..9009edd2b9e
--- /dev/null
+++ b/test/parallel/test-corepack-version.js
@@ -0,0 +1,18 @@
+'use strict';
+require('../common');
+
+const path = require('path');
+const assert = require('assert');
+
+const corepackPathPackageJson = path.resolve(
+  __dirname,
+  '..',
+  '..',
+  'deps',
+  'corepack',
+  'package.json'
+);
+
+const pkg = require(corepackPathPackageJson);
+assert(pkg.version.match(/^\d+\.\d+\.\d+$/),
+       `unexpected version number: ${pkg.version}`);
diff --git a/test/parallel/test-corepack-yarn-install.js b/test/parallel/test-corepack-yarn-install.js
new file mode 100644
index 00000000000..7fe22387bca
--- /dev/null
+++ b/test/parallel/test-corepack-yarn-install.js
@@ -0,0 +1,63 @@
+'use strict';
+const common = require('../common');
+if (!common.hasCrypto)
+  common.skip('missing crypto');
+
+const path = require('path');
+const exec = require('child_process').exec;
+const assert = require('assert');
+const fs = require('fs');
+const fixtures = require('../common/fixtures');
+
+const tmpdir = require('../common/tmpdir');
+tmpdir.refresh();
+const npmSandbox = path.join(tmpdir.path, 'npm-sandbox');
+fs.mkdirSync(npmSandbox);
+const homeDir = path.join(tmpdir.path, 'home');
+fs.mkdirSync(homeDir);
+const installDir = path.join(tmpdir.path, 'install-dir');
+fs.mkdirSync(installDir);
+
+const corepackYarnPath = path.join(
+  __dirname,
+  '..',
+  '..',
+  'deps',
+  'corepack',
+  'dist',
+  'yarn.js'
+);
+
+const pkgContent = JSON.stringify({
+  dependencies: {
+    'package-name': fixtures.path('packages/main')
+  }
+});
+
+const pkgPath = path.join(installDir, 'package.json');
+
+fs.writeFileSync(pkgPath, pkgContent);
+
+const env = { ...process.env,
+              PATH: path.dirname(process.execPath),
+              NPM_CONFIG_PREFIX: path.join(npmSandbox, 'npm-prefix'),
+              NPM_CONFIG_TMP: path.join(npmSandbox, 'npm-tmp'),
+              HOME: homeDir };
+
+exec(`${process.execPath} ${corepackYarnPath} install`, {
+  cwd: installDir,
+  env: env
+}, common.mustCall(handleExit));
+
+function handleExit(error, stdout, stderr) {
+  const code = error ? error.code : 0;
+  const signalCode = error ? error.signal : null;
+
+  if (code !== 0) {
+    process.stderr.write(stderr);
+  }
+
+  assert.strictEqual(code, 0, `yarn install got error code ${code}`);
+  assert.strictEqual(signalCode, null, `unexpected signal: ${signalCode}`);
+  assert(fs.existsSync(`${installDir}/node_modules/package-name`));
+}