substDefs
import type { IR } from "#codebase/tcmts/core/hash"; export function substDefs(ir: IR, f: (def: number) => IR): IR { if (typeof ir === "string") return ir; if (ir[0] === "@def" && ir.length === 2) return f(Number(ir[1])); return ir.map((c) => substDefs(c, f)); }