Method loadModuleFromExports

internal/module/resolver.go:669–700

(packageInfo *packagejson.InfoCacheEntry, ext extensions, subpath string)

}

func (r *resolutionState) loadModuleFromExports(packageInfo *packagejson.InfoCacheEntry, ext extensions, subpath string) *resolved {
	// !!! This is ported exactly, but the falsy check seems wrong
	if !packageInfo.Exists() || packageInfo.Contents.Exports.IsFalsy() {
		return continueSearching()
	}

	if subpath == "." {
		var mainExport packagejson.ExportsOrImports
		switch packageInfo.Contents.Exports.Type {
		case packagejson.JSONValueTypeString, packagejson.JSONValueTypeArray:
			mainExport = packageInfo.Contents.Exports
		case packagejson.JSONValueTypeObject:
			if packageInfo.Contents.Exports.IsConditions() {
				mainExport = packageInfo.Contents.Exports
			} else if dot, ok := packageInfo.Contents.Exports.AsObject().Get("."); ok {
				mainExport = dot
			}
		}
		if mainExport.Type != packagejson.JSONValueTypeNotPresent {
			return r.loadModuleFromTargetExportOrImport(ext, subpath, packageInfo, false /*isImports*/, mainExport, "", false /*isPattern*/, ".")
		}
	} else if packageInfo.Contents.Exports.Type == packagejson.JSONValueTypeObject && packageInfo.Contents.Exports.IsSubpaths() {
		if result := r.loadModuleFromExportsOrImports(ext, subpath, packageInfo.Contents.Exports.AsObject(), packageInfo, false /*isImports*/); !result.shouldContinueSearching() {
			return result
		}
	}

	if r.tracer != nil {
		r.tracer.write(diagnostics.Export_specifier_0_does_not_exist_in_package_json_scope_at_path_1, subpath, packageInfo.PackageDirectory)
	}
	return continueSearching()
}

func (r *resolutionState) loadModuleFromExportsOrImports(
	extensions extensions,