workflow: move to pnpm (#4766)

scripts/build.js

@@ -7,10 +7,10 @@ or "esm,cjs"):
 
 ```
 # name supports fuzzy match. will build all packages with name containing "dom":
-yarn build dom
+nr build dom
 
 # specify the format to output
-yarn build core --formats cjs
+nr build core --formats cjs
 ```
 */
 

scripts/checkYarn.js

@@ -1,6 +0,0 @@
-if (!/yarn\.js$/.test(process.env.npm_execpath || '')) {
-  console.warn(
-    '\u001b[33mThis repository requires Yarn 1.x for scripts to work properly.\u001b[39m\n'
-  )
-  process.exit(1)
-}

scripts/dev.js

@@ -6,13 +6,13 @@ formats to watch (defaults to "global"):
 
 ```
 # name supports fuzzy match. will watch all packages with name containing "dom"
-yarn dev dom
+nr dev dom
 
 # specify the format to output
-yarn dev core --formats cjs
+nr dev core --formats cjs
 
 # Can also drop all __DEV__ blocks with:
-__DEV__=false yarn dev
+__DEV__=false nr dev
 ```
 */
 

scripts/preinstall.js

@@ -0,0 +1,7 @@
+if (!/pnpm/.test(process.env.npm_execpath || '')) {
+  console.warn(
+    `\u001b[33mThis repository requires using pnpm as the package manager ` +
+      ` for scripts to work properly.\u001b[39m\n`
+  )
+  process.exit(1)
+}

scripts/release.js

@@ -80,7 +80,7 @@ async function main() {
   step('\nRunning tests...')
   if (!skipTests && !isDryRun) {
     await run(bin('jest'), ['--clearCache'])
-    await run('yarn', ['test', '--bail'])
+    await run('npm', ['test', '--', '--bail'])
   } else {
     console.log(`(skipped)`)
   }
@@ -92,16 +92,16 @@ async function main() {
   // build all packages with types
   step('\nBuilding all packages...')
   if (!skipBuild && !isDryRun) {
-    await run('yarn', ['build', '--release'])
+    await run('npm', ['run', 'build', '--', '--release'])
     // test generated dts files
     step('\nVerifying type declarations...')
-    await run('yarn', ['test-dts-only'])
+    await run('npm', ['run', 'test-dts-only'])
   } else {
     console.log(`(skipped)`)
   }
 
   // generate changelog
-  await run(`yarn`, ['changelog'])
+  await run(`npm`, ['run', 'changelog'])
 
   const { stdout } = await run('git', ['diff'], { stdio: 'pipe' })
   if (stdout) {
@@ -205,6 +205,8 @@ async function publishPackage(pkgName, version, runIfNotDry) {
   step(`Publishing ${pkgName}...`)
   try {
     await runIfNotDry(
+      // note: use of yarn is intentional here as we rely on its publishing
+      // behavior.
       'yarn',
       [
         'publish',