How much typescript is necessary to get a job?

Title: How much TypeScript is necessary to get a job?

标题：找工作需要掌握多少 TypeScript？

Hi, I am curious to know how much TypeScript I should learn to be able to get a job as a React dev. TypeScript has many concepts from beginner to advanced. I wanna know which concepts are necessary to land a job? 你好，我很好奇作为一名 React 开发人员，我需要掌握多少 TypeScript 才能找到工作。TypeScript 从入门到进阶包含许多概念，我想知道哪些概念是入职所必需的？

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