One line saying why a command has no value to show, in the two ways there can be none: you named nothing, or you named something this session does not have.

The value-side twin of reportBadPath, and deliberately a plain string rather than something that prints: .doc, .copy and .type each colour and place it differently, and all three reach for it at the same moment — the one where their own answer came back null.

The command comes first because that is the order it is read in and written in — noSuchValueLine('doc', argument) is .doc speaking about what it was handed, the same shape as reportBadPath(repl, 'cat', …).

import { noSuchValueLine } from './no-such-value-line.ts';

noSuchValueLine('doc', ''); // 'Usage: .doc <value>'
noSuchValueLine('doc', 'helper').includes('no such name'); // true — the other way