chore: add tests, gh actions and prettier config

test/bare.js

@@ -0,0 +1,33 @@
+const { spawn } = require('child_process')
+const test = require('brittle')
+const path = require('path')
+// NOTE: this assumes that the bundle has been transformed (see test:transform npm script)
+
+test('app bundle compiled with no plugins', async (t) => {
+  await t.exception(async () => {
+    await new Promise((resolve, reject) => {
+      const p = spawn('bare', [
+        '--eval',
+        `require(${path.join(__dirname, 'bundles/default.bundle')})`
+      ])
+      let err = Buffer.alloc(0)
+      p.stderr.on('data', (d) => {
+        err = Buffer.concat([err, d])
+      })
+      p.stderr.on('close', () => {
+        reject(err.toString())
+      })
+    })
+  }, /Uncaught SyntaxError: Invalid regular expression/)
+})
+
+test('app bundle compiled with this plugin', (t) => {
+  const { foo, fooBar } = require('./bundles/plugin.bundle')
+
+  // checks if we've fixed the problematic package
+  const match = fooBar('A ბ ㄱ')
+  t.alike(match, ['A', 'ბ', 'ㄱ'])
+
+  // ensures we haven't broken the other package
+  t.is(foo(), 'bar')
+})