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How does jslint work?

How does jslint check problems in javascript? Does it have an actual javascript parser?

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JSLint is written in JavaScript and uses Pratt Parser . He “works” by analyzing the source provided and looking for “problems”. These problems are identified by the author and are not necessarily related to the syntax.

It should be noted that " JSLint defines a professional subset of JavaScript ." This means that not all pure ECMAScript will be displayed in JSLint.

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Yes, it analyzes and analyzes the code.

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Source: https://habr.com/ru/post/1781077/

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