What does the error "error TS1144: '{' or ';' expected" in "../node_modules/@types/node/assert.d.ts:3:68" mean?

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This error means that the TypeScript compiler is expecting to find either an opening curly brace or a semicolon, but it has encountered something else. Specifically, the error message indicates that the problem is located in the file assert.d.ts in the node_modules folder, at line 3 and column 68.

Without seeing the contents of the file, it's difficult to say exactly what the issue is, but some possible causes of this error include:

• A missing semicolon or opening brace earlier in the code
• A syntax error in a previous import statement or variable declaration
• A broken or incomplete TypeScript declaration file (such as the one mentioned in the error message) that contains a syntax error.

To fix this error, you'll need to go through the file in question and check for any missing or out-of-place punctuation, as well as any other syntax errors.