Function getCapabilitiesFromVersionInPackageGraph

src/shared/test/version.ts:19–40

* Get the capabilities by reading the version from package_graph.json. * * Returns `undefined` if the graph/version cannot be read.

(logger: Logger, packageFile: string)

 * Returns `undefined` if the graph/version cannot be read.
 */
function getCapabilitiesFromVersionInPackageGraph(logger: Logger, packageFile: string): DartTestCapabilities | undefined {
	const packageGraphFile = path.join(path.dirname(packageFile), "package_graph.json");

	try {
		const packageGraphJson = fs.readFileSync(packageGraphFile, "utf8");
		const packageGraph = JSON.parse(packageGraphJson) as PackageGraphJson;
		const testVersion = packageGraph.packages?.find((pkg) => pkg.name === "test")?.version;

		if (!testVersion)
			return undefined;

		if (semver.valid(testVersion))
			return new DartTestCapabilities(testVersion);

		logger.warn(`Failed to parse pkg:test version number from ${packageGraphFile}: ${testVersion}`);
	} catch (e: any) {
		if (e?.code !== "ENOENT")
			logger.warn(`Failed to read pkg:test version number from ${packageGraphFile}: ${e}`);
	}

	return undefined;
}

/**
 * Gets the pkg:test capabilities for a Dart project.