fix(build): build prod exits with code 1 if anything goes wrong (#10016)

Signed-off-by: Matt Krick <[email protected]>
Co-authored-by: Matt Krick <[email protected]>

scripts/prod.js

@@ -2,8 +2,16 @@ const generateGraphQLArtifacts = require('./generateGraphQLArtifacts')
 const cp = require('child_process')
 
 const runChild = (cmd) => {
-  return new Promise((resolve) => {
-    const build = cp.exec(cmd).on('exit', resolve)
+  return new Promise((resolve, reject) => {
+    const build = cp.exec(cmd).on('exit', (code, signal) => {
+      if (code !== 0) {
+        reject(new Error(`Received non-zero exit code ${code}`))
+      } else if (signal) {
+        reject(new Error(`Received signal ${signal}`))
+      } else {
+        resolve()
+      }
+    })
     build.stderr.pipe(process.stderr)
   })
 }
@@ -14,6 +22,7 @@ const prod = async (isDeploy, noDeps) => {
     await generateGraphQLArtifacts()
   } catch (e) {
     console.log('ERR generating artifacts', e)
+    process.exit(1)
   }
 
   console.log('starting webpack build')
@@ -28,6 +37,7 @@ const prod = async (isDeploy, noDeps) => {
     ])
   } catch (e) {
     console.log('error webpackifying', e)
+    process.exit(1)
   }
 }