Superstruct makes it easy to define interfaces and then validate JavaScript data against them. Its type annotation API was inspired by Typescript, Flow, Go, and GraphQL, giving it a familiar and easy ...

This makes it easy to extract data embedded in JavaScript code using XPath in a way more robust than just using regular expressions. Use calmjs.parse instead of slimit for JavaScript parsing ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Choose between a layout optimized for your Android or Kindle tablet, or a replica experience that looks just like the newspaper available on newsstands Access to all content from the print edition, ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Andy Smith is a Certified Financial Planner (CFP®), licensed realtor and educator with over 35 years of diverse ...

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Billionaire Nation is a Washington Post series examining how the wealthiest have amassed unprecedented political power. BALA CYNWYD, Pennsylvania — Three years ago, billionaire Jeff Yass’s political ...