Appendix B · section 1 of 32

The Finished Pipeline

Every complete file the chapters ask you to create, in its finished state.

These listings are generated from the chapter sources by scripts/build-appendix.mjs rather than written by hand, so they cannot disagree with the chapters: if a listing here differs from the one you typed, the chapter is where the difference came from.

Where a file grew across several chapters, the version below is the last one — the one the finished pipeline runs. The chapter each listing was completed in is noted beside it.

The pipeline itself — everything under ask/ — is 28 TypeScript files and 2618 lines, the corpus and the tests included. Both numbers are counted from the listings below when this page is generated, so the sentence cannot drift away from the table.

To run the stages that call a model you need ANTHROPIC_API_KEY exported and @anthropic-ai/sdk installed; the stage that embeds needs a Cloudflare account as well, and runs without one as Chapter 5 says. The corpus, the retrieval, the fusion, the check, the chunker, the manifest and every test file call no model and need no credential.

What is here

File	Completed in	Lines
`package.json`	Introduction	18
`tsconfig.json`	Introduction	14
`.gitignore`	Introduction	1
`ask/talk.ts`	Talking to a Model	38
`ask/setup.ts`	Talking to a Model	33
`ask/scope.ts`	Talking to a Model	70
`ask/corpus.ts`	Writing From a Book	278
`ask/answer.ts`	Writing From a Book	175
`ask/figures.ts`	The Check That Is Not the Model	81
`ask/check.ts`	The Check That Is Not the Model	99
`ask/check.test.ts`	The Check That Is Not the Model	90
`ask/retrieve.ts`	Finding It by Its Words	137
`ask/retrieve.test.ts`	Finding It by Its Words	38
`ask/vectors.ts`	Finding It by Meaning	139
`ask/fuse.ts`	Finding It by Meaning	52
`ask/fuse.test.ts`	Finding It by Meaning	33
`ask/rephrase.ts`	Saying It the Law’s Way	85
`ask/rerank.ts`	Choosing What It Reads	128
`ask/schedule.ts`	Once Found, Look It Up	141
`ask/sections.ts`	Once Found, Look It Up	110
`ask/widen.test.ts`	Once Found, Look It Up	53
`ask/chunk.ts`	A Corpus You Can Trust	123
`ask/manifest.ts`	A Corpus You Can Trust	80
`ask/corpus.test.ts`	A Corpus You Can Trust	77
`ask/pipeline.ts`	Failing Closed	128
`ask/live.ts`	Failing Closed	24
`ask/ask.ts`	Failing Closed	51
`ask/eval-cases.ts`	Measuring the Whole Thing	40
`ask/register.ts`	Measuring the Whole Thing	53
`ask/eval.ts`	Measuring the Whole Thing	99
`ask/pipeline.test.ts`	Tests That Never Call the Model	163