Function collapseSourcemaps

src/utils/collapseSourcemaps.ts:202–244

(
	file: string,
	map: Omit<DecodedSourceMap, 'sourcesContent'> & { sourcesContent: (string | null)[] },
	modules: readonly Module[],
	bundleSourcemapChain: readonly DecodedSourceMapOrMissing[],
	excludeContent: boolean | undefined,
	log: LogHandler
)

}

export function collapseSourcemaps(
	file: string,
	map: Omit<DecodedSourceMap, 'sourcesContent'> & { sourcesContent: (string | null)[] },
	modules: readonly Module[],
	bundleSourcemapChain: readonly DecodedSourceMapOrMissing[],
	excludeContent: boolean | undefined,
	log: LogHandler
): SourceMap {
	const linkMap = getLinkMap(log);
	const moduleSources = modules
		.filter(module => !module.excludeFromSourcemap)
		.map(module =>
			getCollapsedSourcemap(
				module.id,
				module.originalCode,
				module.originalSourcemap,
				module.sourcemapChain,
				linkMap
			)
		);

	const link = new Link(map, moduleSources);
	const source = bundleSourcemapChain.reduce(linkMap, link);
	let { sources, sourcesContent, names, mappings } = source.traceMappings();

	if (file) {
		const directory = dirname(file);
		sources = sources.map((source: string) => relative(directory, source));
		file = basename(file);
	}

	for (const module of modules) {
		resetSourcemapCache(module.originalSourcemap, module.sourcemapChain);
	}

	return new SourceMap({
		file,
		mappings,
		names,
		sources,
		sourcesContent: excludeContent ? undefined : sourcesContent
	});
}

export function collapseSourcemap(
	id: string,