chore!(backend-shared): make CUBEJS_TRANSPILATION_WORKER_THREADS=true by default (#10097)

* make CUBEJS_TRANSPILATION_WORKER_THREADS=true by default

* cleanup push CI wf

Author: KSDaemon

.github/workflows/push.yml

@@ -86,11 +86,8 @@ jobs:
         node-version: [22.x]
         # Don't forget to update build-native-release
         python-version: [3.11]
-        transpile-worker-threads: [false, true]
       fail-fast: false
 
-    env:
-      CUBEJS_TRANSPILATION_WORKER_THREADS: ${{ matrix.transpile-worker-threads }}
     steps:
       - id: get-tag-out
         run: echo "$OUT"
@@ -144,16 +141,16 @@ jobs:
       - name: Lerna test
         run: yarn lerna run --concurrency 1 --stream --no-prefix unit
       - name: Fix lcov paths
-        if: (matrix.node-version == '22.x' && matrix.transpile-worker-threads == true)
+        if: (matrix.node-version == '22.x')
         run: |
           ./.github/actions/codecov-fix.sh
       - name: Combine all fixed LCOV files
-        if: (matrix.node-version == '22.x' && matrix.transpile-worker-threads == true)
+        if: (matrix.node-version == '22.x')
         run: |
           echo "" > ./combined-unit.lcov
           find ./packages -type f -name lcov.fixed.info -exec cat {} + >> ./combined-unit.lcov || true
       - name: Upload coverage artifact
-        if: (matrix.node-version == '22.x' && matrix.transpile-worker-threads == true)
+        if: (matrix.node-version == '22.x')
         uses: actions/upload-artifact@v4
         with:
           name: coverage-unit

docs/pages/product/configuration/reference/environment-variables.mdx

@@ -1405,7 +1405,7 @@ code in worker threads.
 
 | Possible Values | Default in Development | Default in Production |
 | --------------- | ---------------------- | --------------------- |
-| `true`, `false` | `false`                | `false`               |
+| `true`, `false` | `true`                 | `true`                |
 
 <ReferenceBox>
 

packages/cubejs-backend-shared/src/env.ts

@@ -229,7 +229,7 @@ const variables: Record<string, (...args: any) => any> = {
     .default('true')
     .asBoolStrict(),
   transpilationWorkerThreads: () => get('CUBEJS_TRANSPILATION_WORKER_THREADS')
-    .default('false')
+    .default('true')
     .asBoolStrict(),
   allowNonStrictDateRangeMatching: () => get('CUBEJS_PRE_AGGREGATIONS_ALLOW_NON_STRICT_DATE_RANGE_MATCH')
     .default('true')