From ee07c58ff6a9486396e6fcbaf2fd87aae9880954 Mon Sep 17 00:00:00 2001
From: Kristiyan Kostadinov <crisbeto@abv.bg>
Date: Fri, 23 Jul 2021 20:10:47 +0200
Subject: [PATCH] build: resolve latest MDC version through yarn

Uses Yarn to resolve the latest canary version of MDC in an attempt to avoid flakes due to mismatches.
---
 scripts/circleci/setup-mdc-canary.js | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/scripts/circleci/setup-mdc-canary.js b/scripts/circleci/setup-mdc-canary.js
index 80b497666be2..544060a4389b 100644
--- a/scripts/circleci/setup-mdc-canary.js
+++ b/scripts/circleci/setup-mdc-canary.js
@@ -1,16 +1,29 @@
 const {join} = require('path');
-const {spawn} = require('child_process');
+const {spawn, spawnSync} = require('child_process');
 const packageJson = require(join(__dirname, '../../package.json'));
+const versionsProcess = spawnSync('yarn', [
+  'info', 'material-components-web', 'dist-tags.canary', '--json'
+], {shell: true});
+let latestCanaryVersion = null;
+
+try {
+  latestCanaryVersion = JSON.parse(versionsProcess.stdout.toString()).data;
+} catch (e) {
+  console.error('Failed to retrieve latest MDC version');
+  throw e;
+}
+
 const pattern = /^material-components-web$|^@material\//;
 const params = Object.keys(packageJson.devDependencies)
   .filter(dependency => pattern.test(dependency))
-  .reduce((mdcDependencies, dependency) => [...mdcDependencies, `${dependency}@canary`], []);
+  .reduce((mdcDependencies, dependency) =>
+    [...mdcDependencies, `${dependency}@${latestCanaryVersion}`], []);
 
 if (!params.length) {
   throw Error(`Could not find MDC dependencies in package.json`);
 }
 
-console.log('Updating all MDC dependencies to latest canary version');
+console.log(`Updating all MDC dependencies to version ${latestCanaryVersion}`);
 const childProcess = spawn('yarn', ['add', ...params, '-D'], {shell: true});
 childProcess.stdout.on('data', data => console.log(data + ''));
 childProcess.stderr.on('data', data => console.error(data + ''));