The react-error-boundary library solves this by catching errors and displaying fallback UIs instead. This post explores using react-error-boundary for error handling in React. What is Boundary Wall? Any wall, fence, or enclosing structure constructed on or directly next to a cadastral property border, as well as any other structure fastened to or on top of a boundary wall, including security devices such as spikes, barbed wire, razor wire, or electric fences. Master the word "BOUNDARY" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource. The meaning of BOUNDARY is something that indicates or fixes a limit or extent. How to use boundary in a sentence.