SourceMapping

Defined in: packages/core/src/sourcemap.ts:18

Source maps are reconstructed at emit time rather than threaded through the passes. Provenance lives in the typed IR's ctx.origins side-table: passes pin each original job/step/fragment's origin before mutating, and carry it onto clones/derived nodes, so a node that a macro moves still points at its true source. We never re-derive provenance here — we re-parse the emitted body for line numbers and resolve each node through the IR.

makeResolveOrigin(ctx) is the single resolution seam: it returns the lone (path) => Range | undefined function buildSourceMap resolves through.