Function getSdkVersion

src/shared/utils/fs.ts:378–434

(logger: Logger, { sdkRoot }: { sdkRoot?: string })

}

export function getSdkVersion(logger: Logger, { sdkRoot }: { sdkRoot?: string }): string | undefined {
	if (!sdkRoot)
		return undefined;

	// Try to read the new JSON file for Flutter. Don't use exist checks as it races,
	// just try to read and see if we get contents.
	const jsonVersionFile = path.join(sdkRoot, "bin", "cache", "flutter.version.json");
	let jsonVersionFileContent: string | undefined;
	try {
		jsonVersionFileContent = fs.readFileSync(jsonVersionFile, "utf8").trim();
	} catch {
	}

	if (jsonVersionFileContent) {
		let versionData: any;
		try {
			versionData = JSON.parse(jsonVersionFileContent);
		} catch (e) {
			logger.error(`${jsonVersionFile} existed, but could not be parsed as JSON (${e}): ${jsonVersionFileContent}, falling back to legacy file`);
		}

		if (versionData) {
			const flutterVersion = versionData.flutterVersion;
			if (typeof flutterVersion === "string") {
				const validVersion = nullToUndefined(semver.valid(flutterVersion));
				if (validVersion) {
					return validVersion;
				} else {
					logger.error(`${jsonVersionFile} did not contain a valid "flutterVersion": ${jsonVersionFileContent}, falling back to legacy file`);
				}
			} else {
				logger.error(`${jsonVersionFile} did not contain a "flutterVersion": ${jsonVersionFileContent}, falling back to legacy file`);
			}
		}
	}

	const versionFile = path.join(sdkRoot, "version");
	if (!fs.existsSync(versionFile))
		return undefined;
	try {
		return nullToUndefined(
			semver.valid(
				fs
					.readFileSync(versionFile, "utf8")
					.trim()
					.split("\n")
					.filter((l) => l)
					.filter((l) => l.trim().substr(0, 1) !== "#")
					.join("\n")
					.trim()
			)
		);
	} catch (e) {
		logger.error(e);
		return undefined;
	}
}