build/lib/mangleTypeScript.ts/StaticLanguageServiceHost/constructor
class StaticLanguageServiceHost:	constructor(readonly projectPath: string) {
		const existingOptions: Partial<ts.CompilerOptions> = {};
		const parsed = ts.readConfigFile(projectPath, ts.sys.readFile);
		if (parsed.error) {
			throw parsed.error;
		}
		this._cmdLine = ts.parseJsonConfigFileContent(parsed.config, ts.sys, path.dirname(projectPath), existingOptions);
		if (this._cmdLine.errors.length > 0) {
			throw parsed.error;
		}
	}