Handle relative type references

[jablko]

microsoft/types-publisher#776

[jablko]

If I recall correctly, this rule is intentional; of the examples you linked to, only the nested reference in slickgrid should be allowed, so probably the change should be to require as many leading ../ as the number of nested directories + 1.

From the history it looks like when types-publisher only had support for non-relative type references, only /// <reference types="packagename/x" /> were local, which makes sense, and this was applied to relative type references by analogy, but that doesn't make sense? addReference() already correctly handles non-local relative references:

DefinitelyTyped-tools/packages/definitions-parser/src/lib/module-info.ts

Lines 253 to 262 in 5e8a23e

	if (
	full.startsWith("..") &&
	(baseDirectory === "" || path.normalize(joinPaths(baseDirectory, full)).startsWith(".."))
	) {
	throw new Error(
	`${src.fileName}: ` +
	'Definitions must use global references to other packages, not parent ("../xxx") references.' +
	`(Based on reference '${ref.text}')`
	);
	}

[sandersn]

Fixup PR is DefinitelyTyped/DefinitelyTyped#44382

[jakebailey]

This code's going away in #788.