Provides way to exclude TS project references build from bootstrap

[tylersmalley]

Not everyone needs/wants the Typescript project references to be built, resulting in a lot of time for needless waiting.

This provides an environment variable they could set, and if needed manually run node script/build_ts_refs

No longer building TS references in bootstrap on CI will reduce overall CI time by ~8 minutes.

[elasticmachine]

Pinging @elastic/kibana-core (Team:Core)

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)

[tylersmalley]

Actually might just move this check to the kbn:bootstrap script in package.json

[mistic]

@elasticmachine merge upstream

[kibanamachine]

💔 Build Failed

• continuous-integration/kibana-ci/pull-request
• Commit: a33f0c9
• Pipeline Steps (look for red circles / failed steps)
• Interpreting CI Failures

Failed CI Steps

• Jest Unit Tests
• Check Types

---

Test Failures

Kibana Pipeline / jest / Jest Tests.packages/kbn-utils/src/path.Default path finder should find a data directory

Link to Jenkins

Standard Out

Failed Tests Reporter:
  - Test has not failed recently on tracked branches

Stack Trace

Error: expect(received).not.toThrow()

Error name:    "Error"
Error message: "ENOENT: no such file or directory, access '/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/data'"

      18 |   it('should find a data directory', () => {
      19 |     const dataPath = getDataPath();
    > 20 |     expect(() => accessSync(dataPath, constants.R_OK)).not.toThrow();
         |                  ^
      21 |   });
      22 | 
      23 |   it('should find a config directory', () => {

      at packages/kbn-utils/src/path/index.test.ts:20:18
      at Object.<anonymous> (node_modules/expect/build/toThrowMatchers.js:83:11)
      at Object.toThrow (node_modules/expect/build/index.js:338:21)
      at Object.<anonymous> (packages/kbn-utils/src/path/index.test.ts:20:60)
    at Object.<anonymous> (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/packages/kbn-utils/src/path/index.test.ts:20:60)
    at Promise.then.completed (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/utils.js:276:28)
    at new Promise (<anonymous>)
    at callAsyncCircusFn (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/utils.js:216:10)
    at _callCircusTest (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/run.js:212:40)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
    at _runTest (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/run.js:149:3)
    at _runTestsForDescribeBlock (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/run.js:63:9)
    at _runTestsForDescribeBlock (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/run.js:57:9)
    at run (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/run.js:25:3)
    at runAndTransformResultsToJestFormat (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/legacy-code-todo-rewrite/jestAdapterInit.js:176:21)
    at jestAdapter (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-circus/build/legacy-code-todo-rewrite/jestAdapter.js:109:19)
    at runTestInternal (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-runner/build/runTest.js:380:16)
    at runTest (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-runner/build/runTest.js:472:34)
    at Object.worker (/var/lib/jenkins/workspace/elastic+kibana+pipeline-pull-request/kibana/node_modules/jest-runner/build/testWorker.js:133:12)

---

Metrics [docs]

✅ unchanged

History

• 💔 Build #106226 failed 399d2d4
• 💔 Build #106221 failed f8d263c

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[Zacqary]

Is there a reason we'd want to build TS references in bootstrap in a context outside of the CI? I imagine most Kibana devs would need to enable this environment variable to speed up dev time (i.e. working on something with unfinished type definitions, need to merge master, have to run bootstrap to get Kibana to run).

Does it make more sense to have the CI opt-in to building references with an environment variable, rather than having an end user opt-out? Or is there a use case I'm not understanding?

[tylersmalley]

@Zacqary, the building of TS references is to address Typescript being otherwise unusable in any IDE, not in CI. The time this task has taken has increased greatly over the past couple of weeks as teams have migrated to project references. I agree that not everyone needs or wants these types to be generated every time, and we need to reach a consensus on that.

Some options:

• Make it opt-out, which is what we are doing here.
• No longer build Typescript references by default during bootstrap, and instead let the developer run node scripts/build_ts_refs when they feel it's necessary.
• Move to building the references asynchronously, where the bootstrap will kick off this task. This is not completely strait-forward, as we need to figure out how to communicate this to the user and ensure we're not running multiple of these.
• Attempt to improve caching (Spencer has an experimental PR [ts/build-refs] implement experimental remote cache #91012)
• Build projects using Bazel (minimum 2+ months out from being able to move forward with this Migrate Kibana plugins from TS project references into Bazel #91056)
• Address performance issues with current Typescript usage. This is hard, and not currently documented. But you can get a trace:
  • rm -rf src/core/target && ./node_modules/.bin/tsc -b src/core/tsconfig.json --extendedDiagnostics --generateTrace trace_output
  • Open chrome://tracing/ in Chrome
  • Load trace.1.json
  • The pos references a line in types.1.json

More information on project references: https://github.com/elastic/kibana/blob/master/docs/developer/best-practices/typescript.asciidoc#project-references

[tylersmalley]

Closing this in favor of not tying the IDE optimization to the bootstrap task by default.